The accessible role of the given GtkAccessible implementation.
The accessible role cannot be changed once set.
The activate-on-single-click property specifies whether the "row-activated" signal will be emitted after a single click.
Whether the widget or any of its descendents can accept the input focus.
This property is meant to be set by widget implementations, typically in their instance init function.
Whether the widget can receive pointer events.
A list of css classes applied to this widget.
The name of this widget in the CSS tree.
This property is meant to be set by widget implementations, typically in their instance init function.
The cursor used by widget.
Setting the ::fixed-height-mode property to %TRUE speeds up
GtkTreeView by assuming that all rows have the same height.
Only enable this option if all rows are the same height.
Please see gtk_tree_view_set_fixed_height_mode() for more
information on this option.
Whether the widget should grab focus when it is clicked with the mouse.
This property is only relevant for widgets that can take focus.
Whether this widget itself will accept the input focus.
Horizontal GtkAdjustment of the scrollable widget.
This adjustment is shared between the scrollable widget and its parent.
How to distribute horizontal space if widget gets extra space.
Whether the widget is the default widget.
Whether the widget has the input focus.
Enables or disables the emission of the ::query-tooltip signal on widget.
A value of %TRUE indicates that widget can have a tooltip, in this case
the widget will be queried using [signalGtk.Widget::query-tooltip] to
determine whether it will provide a tooltip or not.
Override for height request of the widget.
If this is -1, the natural request will be used.
Whether to expand horizontally.
Whether to use the hexpand property.
Enables or disables the hover expansion mode of tree_view.
Hover expansion makes rows expand or collapse if the pointer moves
over them.
This mode is primarily intended for treeviews in popups, e.g.
in GtkComboBox or GtkEntryCompletion.
Enables or disables the hover selection mode of tree_view.
Hover selection makes the selected row follow the pointer.
Currently, this works only for the selection modes
%GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
This mode is primarily intended for treeviews in popups, e.g.
in GtkComboBox or GtkEntryCompletion.
Determines when horizontal scrolling should start.
The GtkLayoutManager instance to use to compute the preferred size
of the widget, and allocate its children.
This property is meant to be set by widget implementations, typically in their instance init function.
Extra indentation for each level.
Margin on bottom side of widget.
This property adds margin outside of the widget's normal size
request, the margin will be added in addition to the size from
[methodGtk.Widget.set_size_request] for example.
Margin on end of widget, horizontally.
This property supports left-to-right and right-to-left text directions.
This property adds margin outside of the widget's normal size
request, the margin will be added in addition to the size from
[methodGtk.Widget.set_size_request] for example.
Margin on start of widget, horizontally.
This property supports left-to-right and right-to-left text directions.
This property adds margin outside of the widget's normal size
request, the margin will be added in addition to the size from
[methodGtk.Widget.set_size_request] for example.
Margin on top side of widget.
This property adds margin outside of the widget's normal size
request, the margin will be added in addition to the size from
[methodGtk.Widget.set_size_request] for example.
The name of the widget.
The requested opacity of the widget.
How content outside the widget's content area is treated.
This property is meant to be set by widget implementations, typically in their instance init function.
The parent widget of this widget.
Whether the widget will receive the default action when it is focused.
The GtkRoot widget of the widget tree containing this widget.
This will be %NULL if the widget is not contained in a root widget.
The scale factor of the widget.
Whether the widget responds to input.
%TRUE if the view has expanders.
Sets the text of tooltip to be the given string, which is marked up with Pango markup.
Also see [methodGtk.Tooltip.set_markup].
This is a convenience property which will take care of getting the
tooltip shown if the given string is not %NULL:
[propertyGtk.Widget:has-tooltip] will automatically be set to %TRUE
and there will be taken care of [signalGtk.Widget::query-tooltip] in
the default signal handler.
Note that if both [propertyGtk.Widget:tooltip-text] and
[propertyGtk.Widget:tooltip-markup] are set, the last one wins.
Sets the text of tooltip to be the given string.
Also see [methodGtk.Tooltip.set_text].
This is a convenience property which will take care of getting the
tooltip shown if the given string is not %NULL:
[propertyGtk.Widget:has-tooltip] will automatically be set to %TRUE
and there will be taken care of [signalGtk.Widget::query-tooltip] in
the default signal handler.
Note that if both [propertyGtk.Widget:tooltip-text] and
[propertyGtk.Widget:tooltip-markup] are set, the last one wins.
Vertical GtkAdjustment of the scrollable widget.
This adjustment is shared between the scrollable widget and its parent.
How to distribute vertical space if widget gets extra space.
Whether to expand vertically.
Whether to use the vexpand property.
Whether the widget is visible.
Determines when vertical scrolling should start.
Override for width request of the widget.
If this is -1, the natural request will be used.
Enable or disable an action installed with gtk_widget_class_install_action().
action name, such as "clipboard.paste"
whether the action is now enabled
For widgets that can be “activated” (buttons, menu items, etc.), this function activates them.
The activation will emit the signal set using
[methodGtk.WidgetClass.set_activate_signal] during class initialization.
Activation is what happens when you press Enter on a widget during key navigation.
If you wish to handle the activation keybinding yourself, it is
recommended to use [methodGtk.WidgetClass.add_shortcut] with an action
created with [ctorGtk.SignalAction.new].
If widget isn't activatable, the function returns %FALSE.
Looks up the action in the action groups associated with
widget and its ancestors, and activates it.
If the action is in an action group added with
[methodGtk.Widget.insert_action_group], the name is expected
to be prefixed with the prefix that was used when the group was
inserted.
The arguments must match the actions expected parameter type,
as returned by g_action_get_parameter_type().
Activates the default.activate action from widget.
Adds controller to widget so that it will receive events.
You will usually want to call this function right after
creating any kind of [classGtk.EventController].
a GtkEventController that hasn't been added to a widget yet
Adds a style class to widget.
After calling this function, the widgets style will match
for css_class, according to CSS matching rules.
Use [methodGtk.Widget.remove_css_class] to remove the
style again.
The style class to add to widget, without the leading '.' used for notation of style classes
Adds a widget to the list of mnemonic labels for this widget.
See [methodGtk.Widget.list_mnemonic_labels]. Note the
list of mnemonic labels for the widget is cleared when the
widget is destroyed, so the caller must make sure to update
its internal state at this point as well.
Queues an animation frame update and adds a callback to be called before each frame.
Until the tick callback is removed, it will be called frequently
(usually at the frame rate of the output device or as quickly as
the application can be repainted, whichever is slower). For this
reason, is most suitable for handling graphics that change every
frame or every few frames. The tick callback does not automatically
imply a relayout or repaint. If you want a repaint or relayout, and
aren’t changing widget properties that would trigger that (for example,
changing the text of a GtkLabel), then you will have to call
[methodGtk.Widget.queue_resize] or [methodGtk.Widget.queue_draw]
yourself.
[methodGdk.FrameClock.get_frame_time] should generally be used
for timing continuous animations and
[methodGdk.FrameTimings.get_predicted_presentation_time] if you are
trying to display isolated frames at particular times.
This is a more convenient alternative to connecting directly to the
[signalGdk.FrameClock::update] signal of GdkFrameClock, since you
don't have to worry about when a GdkFrameClock is assigned to a widget.
function to call for updating animations
This function is only used by GtkWidget subclasses, to
assign a size, position and (optionally) baseline to their
child widgets.
In this function, the allocation and baseline may be adjusted. The given allocation will be forced to be bigger than the widget's minimum size, as well as at least 0×0 in size.
For a version that does not take a transform, see
[methodGtk.Widget.size_allocate].
New width of widget
New height of widget
New baseline of widget, or -1
Transformation to be applied to widget
Appends column to the list of columns. If tree_view has “fixed_height”
mode enabled, then column must have its “sizing” property set to be
GTK_TREE_VIEW_COLUMN_FIXED.
The GtkTreeViewColumn to add.
Creates a binding between source_property on source and target_property
on target.
Whenever the source_property is changed the target_property is
updated using the same value. For instance:
g_object_bind_property (action, "active", widget, "sensitive", 0);
Will result in the "sensitive" property of the widget #GObject instance to be updated with the same value of the "active" property of the action #GObject instance.
If flags contains %G_BINDING_BIDIRECTIONAL then the binding will be mutual:
if target_property on target changes then the source_property on source
will be updated as well.
The binding will automatically be removed when either the source or the
target instances are finalized. To remove the binding without affecting the
source and the target you can just call g_object_unref() on the returned
#GBinding instance.
Removing the binding by calling g_object_unref() on it must only be done if
the binding, source and target are only used from a single thread and it
is clear that both source and target outlive the binding. Especially it
is not safe to rely on this if the binding, source or target can be
finalized from different threads. Keep another reference to the binding and
use g_binding_unbind() instead to be on the safe side.
A #GObject can have multiple bindings.
the property on source to bind
the target #GObject
the property on target to bind
flags to pass to #GBinding
Creates a binding between source_property on source and target_property
on target, allowing you to set the transformation functions to be used by
the binding.
This function is the language bindings friendly version of g_object_bind_property_full(), using #GClosures instead of function pointers.
the property on source to bind
the target #GObject
the property on target to bind
flags to pass to #GBinding
a #GClosure wrapping the transformation function from the source to the target, or %NULL to use the default
a #GClosure wrapping the transformation function from the target to the source, or %NULL to use the default
Called by widgets as the user moves around the window using keyboard shortcuts.
The direction argument indicates what kind of motion is taking place (up,
down, left, right, tab forward, tab backward).
This function calls the [vfuncGtk.Widget.focus] virtual function; widgets
can override the virtual function in order to implement appropriate focus
behavior.
The default focus() virtual function for a widget should return TRUE if
moving in direction left the focus on a focusable location inside that
widget, and FALSE if moving in direction moved the focus outside the
widget. When returning TRUE, widgets normallycall [methodGtk.Widget.grab_focus]
to place the focus accordingly; when returning FALSE, they don’t modify
the current focus location.
This function is used by custom widget implementations; if you're
writing an app, you’d use [methodGtk.Widget.grab_focus] to move
the focus to a particular widget.
direction of focus movement
Recursively collapses all visible, expanded nodes in tree_view.
Resizes all columns to their optimal width. Only works after the treeview has been realized.
Computes the bounds for widget in the coordinate space of target.
FIXME: Explain what "bounds" are.
If the operation is successful, %TRUE is returned. If widget has no
bounds or the bounds cannot be expressed in target's coordinate space
(for example if both widgets are in different windows), %FALSE is
returned and bounds is set to the zero rectangle.
It is valid for widget and target to be the same widget.
Computes whether a container should give this widget extra space when possible.
Containers should check this, rather than looking at
[methodGtk.Widget.get_hexpand] or [methodGtk.Widget.get_vexpand].
This function already checks whether the widget is visible, so visibility does not need to be checked separately. Non-visible widgets are not expanded.
The computed expand value uses either the expand setting explicitly set on the widget itself, or, if none has been explicitly set, the widget may expand if some of its children do.
expand direction
Translates the given point in widget's coordinates to coordinates
relative to target’s coordinate system.
In order to perform this operation, both widgets must share a common ancestor.
the GtkWidget to transform into
a point in widget's coordinate system
Computes a matrix suitable to describe a transformation from
widget's coordinate system into target's coordinate system.
The transform can not be computed in certain cases, for example
when widget and target do not share a common ancestor. In that
case out_transform gets set to the identity matrix.
Tests if the point at (x, y) is contained in widget.
The coordinates for (x, y) must be in widget coordinates, so
(0, 0) is assumed to be the top left of widget's content area.
X coordinate to test, relative to widget's origin
Y coordinate to test, relative to widget's origin
Converts bin_window coordinates to coordinates for the tree (the full scrollable area of the tree).
X coordinate relative to bin_window
Y coordinate relative to bin_window
Converts bin_window coordinates to widget relative coordinates.
bin_window X coordinate
bin_window Y coordinate
Converts tree coordinates (coordinates in full scrollable area of the tree) to bin_window coordinates.
tree X coordinate
tree Y coordinate
Converts tree coordinates (coordinates in full scrollable area of the tree) to widget coordinates.
X coordinate relative to the tree
Y coordinate relative to the tree
Converts widget coordinates to coordinates for the bin_window.
X coordinate relative to the widget
Y coordinate relative to the widget
Converts widget coordinates to coordinates for the tree (the full scrollable area of the tree).
X coordinate relative to the widget
Y coordinate relative to the widget
Creates a new PangoLayout with the appropriate font map,
font description, and base direction for drawing text for
this widget.
If you keep a PangoLayout created in this way around,
you need to re-create it when the widget PangoContext
is replaced. This can be tracked by listening to changes
of the [propertyGtk.Widget:root] property on the widget.
text to set on the layout
Checks to see if a drag movement has passed the GTK drag threshold.
X coordinate of start of drag
Y coordinate of start of drag
current X coordinate
current Y coordinate
Turns tree_view into a drop destination for automatic DND. Calling
this method sets GtkTreeView:reorderable to %FALSE.
the target formats that the drag will support
the bitmask of possible actions for a drag from this widget
Turns tree_view into a drag source for automatic DND. Calling this
method sets GtkTreeView:reorderable to %FALSE.
Mask of allowed buttons to start drag
the target formats that the drag will support
the bitmask of possible actions for a drag from this widget
Notifies the user about an input-related error on this widget.
If the [propertyGtk.Settings:gtk-error-bell] setting is %TRUE,
it calls [methodGdk.Surface.beep], otherwise it does nothing.
Note that the effect of [methodGdk.Surface.beep] can be configured
in many ways, depending on the windowing backend and the desktop
environment or window manager that is used.
Recursively expands all nodes in the tree_view.
This function is intended for #GObject implementations to re-enforce a [floating][floating-ref] object reference. Doing this is seldom required: all #GInitiallyUnowneds are created with a floating reference which usually just needs to be sunken by calling g_object_ref_sink().
Increases the freeze count on object. If the freeze count is
non-zero, the emission of "notify" signals on object is
stopped. The signals are queued until the freeze count is decreased
to zero. Duplicate notifications are squashed so that at most one
#GObject::notify signal is emitted for each property modified while the
object is frozen.
This is necessary for accessors that modify multiple properties to prevent premature notification while the object is still being modified.
Retrieves the GtkAccessibleRole for the given GtkAccessible.
Gets the setting set by gtk_tree_view_set_activate_on_single_click().
Returns the baseline that has currently been allocated to widget.
This function is intended to be used when implementing handlers
for the GtkWidgetClass.snapshot() function, and when allocating
child widgets in GtkWidgetClass.size_allocate().
Returns the height that has currently been allocated to widget.
Returns the width that has currently been allocated to widget.
Retrieves the widget’s allocation.
Note, when implementing a layout container: a widget’s allocation
will be its “adjusted” allocation, that is, the widget’s parent
typically calls [methodGtk.Widget.size_allocate] with an allocation,
and that allocation is then adjusted (to handle margin
and alignment for example) before assignment to the widget.
[methodGtk.Widget.get_allocation] returns the adjusted allocation that
was actually assigned to the widget. The adjusted allocation is
guaranteed to be completely contained within the
[methodGtk.Widget.size_allocate] allocation, however.
So a layout container is guaranteed that its children stay inside the assigned bounds, but not that they have exactly the bounds the container assigned.
Gets the first ancestor of widget with type widget_type.
For example, gtk_widget_get_ancestor (widget, GTK_TYPE_BOX)
gets the first GtkBox that’s an ancestor of widget. No
reference will be added to the returned widget; it should
not be unreferenced.
Note that unlike [methodGtk.Widget.is_ancestor], this function
considers widget to be an ancestor of itself.
ancestor type
Fills the bounding rectangle in bin_window coordinates for the cell at the
row specified by path and the column specified by column. If path is
%NULL, or points to a node not found in the tree, the y and height fields of
the rectangle will be filled with 0. If column is %NULL, the x and width
fields will be filled with 0. The returned rectangle is equivalent to the
background_area passed to gtk_cell_renderer_render(). These background
areas tile to cover the entire bin window. Contrast with the cell_area,
returned by gtk_tree_view_get_cell_area(), which returns only the cell
itself, excluding surrounding borders and the tree expander area.
a GtkTreePath for the row, or %NULL to get only horizontal coordinates
a GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
Gets the ID of the buildable object.
GtkBuilder sets the name based on the ID attribute
of the
Determines whether the input focus can enter widget or any
of its children.
See [methodGtk.Widget.set_focusable].
Queries whether widget can be the target of pointer events.
Fills the bounding rectangle in bin_window coordinates for the cell at the
row specified by path and the column specified by column. If path is
%NULL, or points to a path not currently displayed, the y and height fields
of the rectangle will be filled with 0. If column is %NULL, the x and width
fields will be filled with 0. The sum of all cell rects does not cover the
entire tree; there are extra pixels in between rows, for example. The
returned rectangle is equivalent to the cell_area passed to
gtk_cell_renderer_render(). This function is only valid if tree_view is
realized.
a GtkTreePath for the row, or %NULL to get only horizontal coordinates
a GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
Gets the value set with gtk_widget_set_child_visible().
If you feel a need to use this function, your code probably needs reorganization.
This function is only useful for container implementations and should never be called by an application.
Gets the GtkTreeViewColumn at the given position in the #tree_view.
The position of the column, counting from 0.
Returns a GList of all the GtkTreeViewColumns currently in tree_view.
The returned list must be freed with g_list_free ().
Returns the list of style classes applied to widget.
Returns the CSS name that is used for self.
Fills in path and focus_column with the current path and focus column. If
the cursor isn’t currently set, then *path will be %NULL. If no column
currently has focus, then *focus_column will be %NULL.
The returned GtkTreePath must be freed with gtk_tree_path_free() when
you are done with it.
Queries the cursor set on widget.
See [methodGtk.Widget.set_cursor] for details.
Gets a named field from the objects table of associations (see g_object_set_data()).
name of the key for that association
Determines the destination row for a given position. drag_x and
drag_y are expected to be in widget coordinates. This function is only
meaningful if tree_view is realized. Therefore this function will always
return %FALSE if tree_view is not realized or does not have a model.
the position to determine the destination row for
the position to determine the destination row for
Gets the reading direction for a particular widget.
See [methodGtk.Widget.set_direction].
Get the GdkDisplay for the toplevel window associated with
this widget.
This function can only be called after the widget has been
added to a widget hierarchy with a GtkWindow at the top.
In general, you should only create display specific resources when a widget has been realized, and you should free those resources when the widget is unrealized.
Gets information about the row that is highlighted for feedback.
Returns whether or not the tree allows to start interactive searching by typing in text.
Returns whether or not tree lines are drawn in tree_view.
Returns the column that is the current expander column, or %NULL if none has been set. This column has the expander arrow drawn next to it.
Returns whether fixed height mode is turned on for tree_view.
Returns whether the widget should grab focus when it is clicked with the mouse.
See [methodGtk.Widget.set_focus_on_click].
Determines whether widget can own the input focus.
See [methodGtk.Widget.set_focusable].
Returns the cairo_font_options_t of widget.
Seee [methodGtk.Widget.set_font_options].
Obtains the frame clock for a widget.
The frame clock is a global “ticker” that can be used to drive
animations and repaints. The most common reason to get the frame
clock is to call [methodGdk.FrameClock.get_frame_time], in order
to get a time to use for animating. For example you might record
the start of the animation with an initial value from
[methodGdk.FrameClock.get_frame_time], and then update the animation
by calling [methodGdk.FrameClock.get_frame_time] again during each repaint.
[methodGdk.FrameClock.request_phase] will result in a new frame on the
clock, but won’t necessarily repaint any widgets. To repaint a
widget, you have to use [methodGtk.Widget.queue_draw] which invalidates
the widget (thus scheduling it to receive a draw on the next
frame). gtk_widget_queue_draw() will also end up requesting a frame
on the appropriate frame clock.
A widget’s frame clock will not change while the widget is mapped. Reparenting a widget (which implies a temporary unmap) can change the widget’s frame clock.
Unrealized widgets do not have a frame clock.
Returns which grid lines are enabled in tree_view.
Retrieves the GtkAdjustment used for horizontal scrolling.
Returns the current value of the has-tooltip property.
Returns whether all header columns are clickable.
Returns %TRUE if the headers on the tree_view are visible.
Returns the content height of the widget.
This function returns the height passed to its
size-allocate implementation, which is the height you
should be using in [vfuncGtk.Widget.snapshot].
For pointer events, see [methodGtk.Widget.contains].
Gets whether the widget would like any available extra horizontal space.
When a user resizes a GtkWindow, widgets with expand=TRUE
generally receive the extra space. For example, a list or
scrollable area or document in your window would often be set to
expand.
Containers should use [methodGtk.Widget.compute_expand] rather
than this function, to see whether a widget, or any of its children,
has the expand flag set. If any child of a widget wants to
expand, the parent may ask to expand also.
This function only looks at the widget’s own hexpand flag, rather than computing whether the entire widget tree rooted at this widget wants to expand.
Gets whether gtk_widget_set_hexpand() has been used to explicitly set the expand flag on this widget.
If [propertyGtk.Widget:hexpand] property is set, then it
overrides any computed expand value based on child widgets.
If hexpand is not set, then the expand value depends on
whether any children of the widget would like to expand.
There are few reasons to use this function, but it’s here for completeness and consistency.
Returns whether hover expansion mode is turned on for tree_view.
Returns whether hover selection mode is turned on for tree_view.
Gets the horizontal GtkScrollablePolicy.
Retrieves the layout manager used by widget.
See [methodGtk.Widget.set_layout_manager].
Returns the amount, in pixels, of extra indentation for child levels
in tree_view.
Whether the widget is mapped.
Gets the bottom margin of widget.
Gets the end margin of widget.
Gets the start margin of widget.
Gets the top margin of widget.
Queries the number of columns in the given tree_view.
Retrieves the name of a widget.
See [methodGtk.Widget.set_name] for the significance of widget names.
#Fetches the requested opacity for this widget.
See [methodGtk.Widget.set_opacity].
Returns the widgets overflow value.
Gets a PangoContext with the appropriate font map, font description,
and base direction for this widget.
Unlike the context returned by [methodGtk.Widget.create_pango_context],
this context is owned by the widget (it can be used until the screen
for the widget changes or the widget is removed from its toplevel),
and will be updated to match any changes to the widget’s attributes.
This can be tracked by listening to changes of the
[propertyGtk.Widget:root] property on the widget.
Finds the path at the point (x, y), relative to bin_window coordinates.
That is, x and y are relative to an events coordinates. Widget-relative
coordinates must be converted using
gtk_tree_view_convert_widget_to_bin_window_coords(). It is primarily for
things like popup menus. If path is non-%NULL, then it will be filled
with the GtkTreePath at that point. This path should be freed with
gtk_tree_path_free(). If column is non-%NULL, then it will be filled
with the column at that point. cell_x and cell_y return the coordinates
relative to the cell background (i.e. the background_area passed to
gtk_cell_renderer_render()). This function is only meaningful if
tree_view is realized. Therefore this function will always return %FALSE
if tree_view is not realized or does not have a model.
For converting widget coordinates (eg. the ones you get from GtkWidget::query-tooltip), please see gtk_tree_view_convert_widget_to_bin_window_coords().
The x position to be identified (relative to bin_window).
The y position to be identified (relative to bin_window).
Retrieves the minimum and natural size of a widget, taking into account the widget’s preference for height-for-width management.
This is used to retrieve a suitable size by container widgets which do
not impose any restrictions on the child placement. It can be used
to deduce toplevel window and menu sizes as well as child widgets in
free-form containers such as GtkFixed.
Handle with care. Note that the natural height of a height-for-width widget will generally be a smaller size than the minimum height, since the required height for the natural width is generally smaller than the required height for the minimum width.
Use [idgtk_widget_measure] if you want to support baseline alignment.
Gets a property of an object.
The value can be:
In general, a copy is made of the property contents and the caller is responsible for freeing the memory by calling g_value_unset().
Note that g_object_get_property() is really intended for language bindings, g_object_get() is much more convenient for C programming.
the name of the property to get
return location for the property value
This function gets back user data pointers stored via g_object_set_qdata().
A #GQuark, naming the user data pointer
Determines whether widget is realized.
Determines whether widget is always treated as the default widget
within its toplevel when it has the focus, even if another widget
is the default.
See [methodGtk.Widget.set_receives_default].
Retrieves whether the user can reorder the tree via drag-and-drop. See gtk_tree_view_set_reorderable().
Gets whether the widget prefers a height-for-width layout or a width-for-height layout.
Single-child widgets generally propagate the preference of their child, more complex widgets need to request something either in context of their children or in context of their allocation capabilities.
Returns whether rubber banding is turned on for tree_view. If the
selection mode is %GTK_SELECTION_MULTIPLE, rubber banding will allow the
user to select multiple rows by dragging the mouse.
Retrieves the internal scale factor that maps from window coordinates to the actual device pixels.
On traditional systems this is 1, on high density outputs, it can be a higher value (typically 2).
See [methodGdk.Surface.get_scale_factor].
Gets the column searched on by the interactive search code.
Gets the GtkTreeSelection associated with tree_view.
Returns the widget’s sensitivity.
This function returns the value that has been set using
[methodGtk.Widget.set_sensitive]).
The effective sensitivity of a widget is however determined
by both its own and its parent widget’s sensitivity.
See [methodGtk.Widget.is_sensitive].
Gets the settings object holding the settings used for this widget.
Note that this function can only be called when the GtkWidget
is attached to a toplevel, since the settings object is specific
to a particular GdkDisplay. If you want to monitor the widget for
changes in its settings, connect to the notify::display signal.
Returns whether or not expanders are drawn in tree_view.
Returns the content width or height of the widget.
Which dimension is returned depends on orientation.
This is equivalent to calling [methodGtk.Widget.get_width]
for %GTK_ORIENTATION_HORIZONTAL or [methodGtk.Widget.get_height]
for %GTK_ORIENTATION_VERTICAL, but can be used when
writing orientation-independent code, such as when
implementing [ifaceGtk.Orientable] widgets.
the orientation to query
Gets the size request that was explicitly set for the widget using gtk_widget_set_size_request().
A value of -1 stored in width or height indicates that that
dimension has not been set explicitly and the natural requisition
of the widget will be used instead. See
[methodGtk.Widget.set_size_request]. To get the size a widget will
actually request, call [methodGtk.Widget.measure] instead of
this function.
Returns the widget state as a flag set.
It is worth mentioning that the effective %GTK_STATE_FLAG_INSENSITIVE
state will be returned, that is, also based on parent insensitivity,
even if widget itself is sensitive.
Also note that if you are looking for a way to obtain the
[flagsGtk.StateFlags] to pass to a [classGtk.StyleContext]
method, you should look at [methodGtk.StyleContext.get_state].
Returns the style context associated to widget.
The returned object is guaranteed to be the same
for the lifetime of widget.
Fetch an object build from the template XML for widget_type in
this widget instance.
This will only report children which were previously declared
with [methodGtk.WidgetClass.bind_template_child_full] or one of its
variants.
This function is only meant to be called for code which is private
to the widget_type which declared the child and is meant for language
bindings which cannot easily make use of the GObject structure offsets.
The GType to get a template child for
The “id” of the child defined in the template XML
Returns the column of tree_view’s model which is being used for
displaying tooltips on tree_view’s rows.
This function is supposed to be used in a ::query-tooltip
signal handler for GtkTreeView. The x, y and keyboard_tip values
which are received in the signal handler, should be passed to this
function without modification.
The return value indicates whether there is a tree view row at the given
coordinates (%TRUE) or not (%FALSE) for mouse tooltips. For keyboard
tooltips the row returned will be the cursor row. When %TRUE, then any of
model, path and iter which have been provided will be set to point to
that row and the corresponding model. x and y will always be converted
to be relative to tree_view’s bin_window if keyboard_tooltip is %FALSE.
the x coordinate (relative to widget coordinates)
the y coordinate (relative to widget coordinates)
whether this is a keyboard tooltip or not
Gets the contents of the tooltip for widget.
If the tooltip has not been set using
[methodGtk.Widget.set_tooltip_markup], this
function returns %NULL.
Gets the contents of the tooltip for widget.
If the widget's tooltip was set using
[methodGtk.Widget.set_tooltip_markup],
this function will return the escaped text.
Retrieves the GtkAdjustment used for vertical scrolling.
Gets whether the widget would like any available extra vertical space.
See [methodGtk.Widget.get_hexpand] for more detail.
Gets whether gtk_widget_set_vexpand() has been used to explicitly set the expand flag on this widget.
See [methodGtk.Widget.get_hexpand_set] for more detail.
Determines whether the widget is visible.
If you want to take into account whether the widget’s
parent is also marked as visible, use
[methodGtk.Widget.is_visible] instead.
This function does not check if the widget is obscured in any way.
See [methodGtk.Widget.set_visible].
Fills visible_rect with the currently-visible region of the
buffer, in tree coordinates. Convert to bin_window coordinates with
gtk_tree_view_convert_tree_to_bin_window_coords().
Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
scrollable area of the tree.
Gets the vertical GtkScrollablePolicy.
Returns the content width of the widget.
This function returns the width passed to its
size-allocate implementation, which is the width you
should be using in [vfuncGtk.Widget.snapshot].
For pointer events, see [methodGtk.Widget.contains].
Gets n_properties properties for an object.
Obtained properties will be set to values. All properties must be valid.
Warnings will be emitted and undefined behaviour may result if invalid
properties are passed in.
the names of each property to get
the values of each property to get
Causes widget to have the keyboard focus for the GtkWindow it's inside.
If widget is not focusable, or its [vfuncGtk.Widget.grab_focus]
implementation cannot transfer the focus to a descendant of widget
that is focusable, it will not take focus and %FALSE will be returned.
Calling [methodGtk.Widget.grab_focus] on an already focused widget
is allowed, should not have an effect, and return %TRUE.
Returns whether css_class is currently applied to widget.
A style class, without the leading '.' used for notation of style classes
Determines if the widget should show a visible indication that it has the global input focus.
This is a convenience function that takes into account whether
focus indication should currently be shown in the toplevel window
of widget. See [methodGtk.Window.get_focus_visible] for more
information about focus indication.
To find out if the widget has the global input focus, use
[methodGtk.Widget.has_focus].
Reverses the effects of gtk_widget_show().
This is causing the widget to be hidden (invisible to the user).
Returns whether the widget is currently being destroyed.
This information can sometimes be used to avoid doing unnecessary work.
Creates and initializes child widgets defined in templates.
This function must be called in the instance initializer
for any class which assigned itself a template using
[methodGtk.WidgetClass.set_template].
It is important to call this function in the instance initializer
of a GtkWidget subclass and not in GObject.constructed() or
GObject.constructor() for two reasons:
g_object_new() on a widget with composite templates,
it’s important to build the composite widgets before the construct
properties are set. Properties passed to g_object_new() should
take precedence over properties set in the private template XMLA good rule of thumb is to call this function as the first thing in an instance initialization function.
Inserts group into widget.
Children of widget that implement [ifaceGtk.Actionable] can
then be associated with actions in group by setting their
“action-name” to prefix.action-name.
Note that inheritance is defined for individual actions. I.e.
even if you insert a group with prefix prefix, actions with
the same prefix will still be inherited from the parent, unless
the group contains an action with the same name.
If group is %NULL, a previously inserted group for name is
removed from widget.
the prefix for actions in group
a GActionGroup, or %NULL to remove the previously inserted group for name
Inserts widget into the child widget list of parent.
It will be placed after previous_sibling, or at the beginning if
previous_sibling is %NULL.
After calling this function, gtk_widget_get_prev_sibling(widget)
will return previous_sibling.
If parent is already set as the parent widget of widget, this
function can also be used to reorder widget in the child widget
list of parent.
This API is primarily meant for widget implementations; if you are just using a widget, you must use its own API for adding children.
the parent GtkWidget to insert widget into
the new previous sibling of widget
Inserts widget into the child widget list of parent.
It will be placed before next_sibling, or at the end if
next_sibling is %NULL.
After calling this function, gtk_widget_get_next_sibling(widget)
will return next_sibling.
If parent is already set as the parent widget of widget, this function
can also be used to reorder widget in the child widget list of parent.
This API is primarily meant for widget implementations; if you are just using a widget, you must use its own API for adding children.
the parent GtkWidget to insert widget into
the new next sibling of widget
This inserts the column into the tree_view at position. If position is
-1, then the column is inserted at the end. If tree_view has
“fixed_height” mode enabled, then column must have its “sizing” property
set to be GTK_TREE_VIEW_COLUMN_FIXED.
The GtkTreeViewColumn to be inserted.
The position to insert column in.
Convenience function that inserts a new column into the GtkTreeView
with the given cell renderer and a GtkTreeCellDataFunc to set cell renderer
attributes (normally using data from the model). See also
gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
If tree_view has “fixed_height” mode enabled, then the new column will have its
“sizing” property set to be GTK_TREE_VIEW_COLUMN_FIXED.
Position to insert, -1 for append
column title
cell renderer for column
function to set attributes of cell renderer
Determine whether the point (x, y) in tree_view is blank, that is no
cell content nor an expander arrow is drawn at the location. If so, the
location can be considered as the background. You might wish to take
special action on clicks on the background, such as clearing a current
selection, having a custom context menu or starting rubber banding.
The x and y coordinate that are provided must be relative to bin_window
coordinates. Widget-relative coordinates must be converted using
gtk_tree_view_convert_widget_to_bin_window_coords().
For converting widget coordinates (eg. the ones you get from GtkWidget::query-tooltip), please see gtk_tree_view_convert_widget_to_bin_window_coords().
The path, column, cell_x and cell_y arguments will be filled in
likewise as for gtk_tree_view_get_path_at_pos(). Please see
gtk_tree_view_get_path_at_pos() for more information.
The x position to be identified (relative to bin_window)
The y position to be identified (relative to bin_window)
Determines whether widget can be drawn to.
A widget can be drawn if it is mapped and visible.
Checks whether object has a [floating][floating-ref] reference.
Determines if the widget is the focus widget within its toplevel.
This does not mean that the [propertyGtk.Widget:has-focus]
property is necessarily set; [propertyGtk.Widget:has-focus]
will only be set if the toplevel widget additionally has the
global input focus.
Returns whether a rubber banding operation is currently being done
in tree_view.
Returns the widget’s effective sensitivity.
This means it is sensitive itself and also its parent widget is sensitive.
Determines whether the widget and all its parents are marked as visible.
This function does not check if the widget is obscured in any way.
See also [methodGtk.Widget.get_visible] and
[methodGtk.Widget.set_visible].
Emits the ::keynav-failed signal on the widget.
This function should be called whenever keyboard navigation within a single widget hits a boundary.
The return value of this function should be interpreted
in a way similar to the return value of
[methodGtk.Widget.child_focus]. When %TRUE is returned,
stay in the widget, the failed keyboard navigation is OK
and/or there is nowhere we can/should move the focus to.
When %FALSE is returned, the caller should continue with
keyboard navigation outside the widget, e.g. by calling
[methodGtk.Widget.child_focus] on the widget’s toplevel.
The default [signalGtk.Widget::keynav-failed] handler returns
%FALSE for %GTK_DIR_TAB_FORWARD and %GTK_DIR_TAB_BACKWARD.
For the other values of GtkDirectionType it returns %TRUE.
Whenever the default handler returns %TRUE, it also calls
[methodGtk.Widget.error_bell] to notify the user of the
failed keyboard navigation.
A use case for providing an own implementation of ::keynav-failed
(either by connecting to it or by overriding it) would be a row of
[classGtk.Entry] widgets where the user should be able to navigate
the entire row with the cursor keys, as e.g. known from user
interfaces that require entering license keys.
direction of focus movement
Returns the widgets for which this widget is the target of a mnemonic.
Typically, these widgets will be labels. See, for example,
[methodGtk.Label.set_mnemonic_widget].
The widgets in the list are not individually referenced.
If you want to iterate through the list and perform actions
involving callbacks that might destroy the widgets, you
must call g_list_foreach (result, (GFunc)g_object_ref, NULL)
first, and then unref all the widgets afterwards.
Causes a widget to be mapped if it isn’t already.
This function is only for use in widget implementations.
Calls func on all expanded rows.
A function to be called
Measures widget in the orientation orientation and for the given for_size.
As an example, if orientation is %GTK_ORIENTATION_HORIZONTAL and for_size
is 300, this functions will compute the minimum and natural width of widget
if it is allocated at a height of 300 pixels.
See GtkWidget’s geometry management section for
a more details on implementing GtkWidgetClass.measure().
the orientation to measure
Size for the opposite of orientation, i.e. if orientation is %GTK_ORIENTATION_HORIZONTAL, this is the height the widget should be measured with. The %GTK_ORIENTATION_VERTICAL case is analogous. This way, both height-for-width and width-for-height requests can be implemented. If no size is known, -1 can be passed.
Emits the ::mnemonic-activate signal.
See [signalGtk.Widget::mnemonic-activate].
%TRUE if there are other widgets with the same mnemonic
Moves column to be after to base_column. If base_column is %NULL, then
column is placed in the first position.
The GtkTreeViewColumn to be moved.
The GtkTreeViewColumn to be moved relative to
Emits a "notify" signal for the property property_name on object.
When possible, eg. when signaling a property change from within the class that registered the property, you should use g_object_notify_by_pspec() instead.
Note that emission of the notify signal may be blocked with g_object_freeze_notify(). In this case, the signal emissions are queued and will be emitted (in reverse order) when g_object_thaw_notify() is called.
the name of a property installed on the class of object.
Emits a "notify" signal for the property specified by pspec on object.
This function omits the property name lookup, hence it is faster than g_object_notify().
One way to avoid using g_object_notify() from within the class that registered the properties, and using g_object_notify_by_pspec() instead, is to store the GParamSpec used with g_object_class_install_property() inside a static array, e.g.:
enum
{
PROP_0,
PROP_FOO,
PROP_LAST
};
static GParamSpec *properties[PROP_LAST];
static void
my_object_class_init (MyObjectClass *klass)
{
properties[PROP_FOO] = g_param_spec_int ("foo", "Foo", "The foo",
0, 100,
50,
G_PARAM_READWRITE);
g_object_class_install_property (gobject_class,
PROP_FOO,
properties[PROP_FOO]);
}
and then notify a change on the "foo" property with:
g_object_notify_by_pspec (self, properties[PROP_FOO]);
the #GParamSpec of a property installed on the class of object.
Returns a GListModel to track the children of widget.
Calling this function will enable extra internal bookkeeping to track children and emit signals on the returned listmodel. It may slow down operations a lot.
Applications should try hard to avoid calling this function because of the slowdowns.
Returns a GListModel to track the [classGtk.EventController]s
of widget.
Calling this function will enable extra internal bookkeeping to track controllers and emit signals on the returned listmodel. It may slow down operations a lot.
Applications should try hard to avoid calling this function because of the slowdowns.
Finds the descendant of widget closest to the point (x, y).
The point must be given in widget coordinates, so (0, 0) is assumed
to be the top left of widget's content area.
Usually widgets will return %NULL if the given coordinate is not
contained in widget checked via [methodGtk.Widget.contains].
Otherwise they will recursively try to find a child that does
not return %NULL. Widgets are however free to customize their
picking algorithm.
This function is used on the toplevel to determine the widget below the mouse cursor for purposes of hover highlighting and delivering events.
X coordinate to test, relative to widget's origin
Y coordinate to test, relative to widget's origin
Flags to influence what is picked
Flags the widget for a rerun of the [vfuncGtk.Widget.size_allocate]
function.
Use this function instead of [methodGtk.Widget.queue_resize]
when the widget's size request didn't change but it wants to
reposition its contents.
An example user of this function is [methodGtk.Widget.set_halign].
This function is only for use in widget implementations.
Schedules this widget to be redrawn in the paint phase of the current or the next frame.
This means widget's [vfuncGtk.Widget.snapshot]
implementation will be called.
Flags a widget to have its size renegotiated.
This should be called when a widget for some reason has a new
size request. For example, when you change the text in a
[classGtk.Label], the label queues a resize to ensure there’s
enough space for the new text.
Note that you cannot call gtk_widget_queue_resize() on a widget
from inside its implementation of the [vfuncGtk.Widget.size_allocate]
virtual method. Calls to gtk_widget_queue_resize() from inside
[vfuncGtk.Widget.size_allocate] will be silently ignored.
This function is only for use in widget implementations.
Creates the GDK resources associated with a widget.
Normally realization happens implicitly; if you show a widget and all its parent containers, then the widget will be realized and mapped automatically.
Realizing a widget requires all the widget’s parent widgets to be
realized; calling this function realizes the widget’s parents
in addition to widget itself. If a widget is not yet inside a
toplevel window when you realize it, bad things will happen.
This function is primarily used in widget implementations, and
isn’t very useful otherwise. Many times when you think you might
need it, a better approach is to connect to a signal that will be
called after the widget is realized automatically, such as
[signalGtk.Widget::realize].
Increase the reference count of object, and possibly remove the
[floating][floating-ref] reference, if object has a floating reference.
In other words, if the object is floating, then this call "assumes ownership" of the floating reference, converting it to a normal reference by clearing the floating flag while leaving the reference count unchanged. If the object is not floating, then this call adds a new normal reference increasing the reference count by one.
Since GLib 2.56, the type of object will be propagated to the return type
under the same conditions as for g_object_ref().
Removes column from tree_view.
The GtkTreeViewColumn to remove.
Removes controller from widget, so that it doesn't process
events anymore.
It should not be used again.
Widgets will remove all event controllers automatically when they are destroyed, there is normally no need to call this function.
a GtkEventController
Removes a style from widget.
After this, the style of widget will stop matching for css_class.
The style class to remove from widget, without the leading '.' used for notation of style classes
Removes a widget from the list of mnemonic labels for this widget.
See [methodGtk.Widget.list_mnemonic_labels]. The widget must
have previously been added to the list with
[methodGtk.Widget.add_mnemonic_label].
a GtkWidget that was previously set as a mnemonic label for widget with [methodGtk.Widget.add_mnemonic_label]
Removes a tick callback previously registered with gtk_widget_add_tick_callback().
an id returned by [methodGtk.Widget.add_tick_callback]
Resets the accessible property to its default value.
a GtkAccessibleProperty
Resets the accessible relation to its default value.
a GtkAccessibleRelation
Resets the accessible state to its default value.
a GtkAccessibleState
Activates the cell determined by path and column.
The GtkTreePath to be activated.
The GtkTreeViewColumn to be activated.
Releases all references to other objects. This can be used to break reference cycles.
This function should only be called from object system implementations.
Moves the alignments of tree_view to the position specified by column and
path. If column is %NULL, then no horizontal scrolling occurs. Likewise,
if path is %NULL no vertical scrolling occurs. At a minimum, one of column
or path need to be non-%NULL. row_align determines where the row is
placed, and col_align determines where column is placed. Both are expected
to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
right/bottom alignment, 0.5 means center.
If use_align is %FALSE, then the alignment arguments are ignored, and the
tree does the minimum amount of work to scroll the cell onto the screen.
This means that the cell will be scrolled to the edge closest to its current
position. If the cell is currently visible on the screen, nothing is done.
This function only works if the model is set, and path is a valid row on the
model. If the model changes before the tree_view is realized, the centered
path will be modified to reflect this change.
The path of the row to move to
The GtkTreeViewColumn to move horizontally to
whether to use alignment arguments, or %FALSE.
The vertical alignment of the row specified by path.
The horizontal alignment of the column specified by column.
Scrolls the tree view such that the top-left corner of the visible
area is tree_x, tree_y, where tree_x and tree_y are specified
in tree coordinates. The tree_view must be realized before
this function is called. If it isn't, you probably want to be
using gtk_tree_view_scroll_to_cell().
If either tree_x or tree_y are -1, then that direction isn’t scrolled.
X coordinate of new top-left pixel of visible area, or -1
Y coordinate of new top-left pixel of visible area, or -1
Cause the GtkTreeView::row-activated signal to be emitted
on a single click instead of a double click.
%TRUE to emit row-activated on a single click
Specifies whether the input focus can enter the widget or any of its children.
Applications should set can_focus to %FALSE to mark a
widget as for pointer/touch use only.
Note that having can_focus be %TRUE is only one of the
necessary conditions for being focusable. A widget must
also be sensitive and focusable and not have an ancestor
that is marked as not can-focus in order to receive input
focus.
See [methodGtk.Widget.grab_focus] for actually setting
the input focus on a widget.
whether or not the input focus can enter the widget or any of its children
Sets whether widget can be the target of pointer events.
whether this widget should be able to receive pointer events
Sets whether widget should be mapped along with its parent.
The child visibility can be set for widget before it is added
to a container with [methodGtk.Widget.set_parent], to avoid
mapping children unnecessary before immediately unmapping them.
However it will be reset to its default state of %TRUE when the
widget is removed from a container.
Note that changing the child visibility of a widget does not queue a resize on the widget. Most of the time, the size of a widget is computed from all visible children, whether or not they are mapped. If this is not the case, the container can queue a resize itself.
This function is only useful for container implementations and should never be called by an application.
if %TRUE, widget should be mapped along with its parent.
Sets a user function for determining where a column may be dropped when
dragged. This function is called on every column pair in turn at the
beginning of a column drag to determine where a drop can take place. The
arguments passed to func are: the tree_view, the GtkTreeViewColumn being
dragged, the two GtkTreeViewColumns determining the drop spot, and
user_data. If either of the GtkTreeViewColumn arguments for the drop spot
are %NULL, then they indicate an edge. If func is set to be %NULL, then
tree_view reverts to the default behavior of allowing all columns to be
dropped everywhere.
A function to determine which columns are reorderable
Clear all style classes applied to widget
and replace them with classes.
%NULL-terminated list of style classes to apply to widget.
Sets the current keyboard focus to be at path, and selects it. This is
useful when you want to focus the user’s attention on a particular row. If
focus_column is not %NULL, then focus is given to the column specified by
it. Additionally, if focus_column is specified, and start_editing is
%TRUE, then editing should be started in the specified cell.
This function is often followed by gtk_widget_grab_focus (tree_view)
in order to give keyboard focus to the widget. Please note that editing
can only happen when the widget is realized.
If path is invalid for model, the current cursor (if any) will be unset
and the function will return without failing.
A GtkTreePath
A GtkTreeViewColumn
%TRUE if the specified cell should start being edited.
Sets the cursor to be shown when pointer devices point
towards widget.
If the cursor is NULL, widget will use the cursor
inherited from the parent widget.
Sets a named cursor to be shown when pointer devices point
towards widget.
This is a utility function that creates a cursor via
[ctorGdk.Cursor.new_from_name] and then sets it on widget
with [methodGtk.Widget.set_cursor]. See those functions for
details.
On top of that, this function allows name to be %NULL, which
will do the same as calling [methodGtk.Widget.set_cursor]
with a %NULL cursor.
The name of the cursor
Sets the current keyboard focus to be at path, and selects it. This is
useful when you want to focus the user’s attention on a particular row. If
focus_column is not %NULL, then focus is given to the column specified by
it. If focus_column and focus_cell are not %NULL, and focus_column
contains 2 or more editable or activatable cells, then focus is given to
the cell specified by focus_cell. Additionally, if focus_column is
specified, and start_editing is %TRUE, then editing should be started in
the specified cell. This function is often followed by
gtk_widget_grab_focus (tree_view) in order to give keyboard focus to the
widget. Please note that editing can only happen when the widget is
realized.
If path is invalid for model, the current cursor (if any) will be unset
and the function will return without failing.
A GtkTreePath
A GtkTreeViewColumn
A GtkCellRenderer
%TRUE if the specified cell should start being edited.
Each object carries around a table of associations from strings to pointers. This function lets you set an association.
If the object already had an association with that name, the old association will be destroyed.
Internally, the key is converted to a #GQuark using g_quark_from_string().
This means a copy of key is kept permanently (even after object has been
finalized) — so it is recommended to only use a small, bounded set of values
for key in your program, to avoid the #GQuark storage growing unbounded.
name of the key
data to associate with that key
Sets the reading direction on a particular widget.
This direction controls the primary direction for widgets containing text, and also the direction in which the children of a container are packed. The ability to set the direction is present in order so that correct localization into languages with right-to-left reading directions can be done. Generally, applications will let the default reading direction present, except for containers where the containers are arranged in an order that is explicitly visual rather than logical (such as buttons for text justification).
If the direction is set to %GTK_TEXT_DIR_NONE, then the value
set by [funcGtk.Widget.set_default_direction] will be used.
the new direction
Sets the row that is highlighted for feedback.
If path is %NULL, an existing highlight is removed.
The path of the row to highlight
Specifies whether to drop before, after or into the row
If enable_search is set, then the user can type in text to search through
the tree interactively (this is sometimes called "typeahead find").
Note that even if this is %FALSE, the user can still initiate a search using the “start-interactive-search” key binding.
%TRUE, if the user can search interactively
Sets whether to draw lines interconnecting the expanders in tree_view.
This does not have any visible effects for lists.
%TRUE to enable tree line drawing, %FALSE otherwise.
Sets the column to draw the expander arrow at. It must be in tree_view.
If column is %NULL, then the expander arrow is always at the first
visible column.
If you do not want expander arrow to appear in your tree, set the expander column to a hidden column.
%NULL, or the column to draw the expander arrow at.
Enables or disables the fixed height mode of tree_view.
Fixed height mode speeds up GtkTreeView by assuming that all
rows have the same height.
Only enable this option if all rows are the same height and all
columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
%TRUE to enable fixed height mode
Set child as the current focus child of widget.
This function is only suitable for widget implementations.
If you want a certain widget to get the input focus, call
[methodGtk.Widget.grab_focus] on it.
Sets whether the widget should grab focus when it is clicked with the mouse.
Making mouse clicks not grab focus is useful in places like toolbars where you don’t want the keyboard focus removed from the main area of the application.
whether the widget should grab focus when clicked with the mouse
Specifies whether widget can own the input focus.
Widget implementations should set focusable to %TRUE in
their init() function if they want to receive keyboard input.
Note that having focusable be %TRUE is only one of the
necessary conditions for being focusable. A widget must
also be sensitive and can-focus and not have an ancestor
that is marked as not can-focus in order to receive input
focus.
See [methodGtk.Widget.grab_focus] for actually setting
the input focus on a widget.
whether or not widget can own the input focus
Sets the font map to use for Pango rendering.
The font map is the object that is used to look up fonts. Setting a custom font map can be useful in special situations, e.g. when you need to add application-specific fonts to the set of available fonts.
When not set, the widget will inherit the font map from its parent.
Sets the cairo_font_options_t used for Pango rendering
in this widget.
When not set, the default font options for the GdkDisplay
will be used.
a cairo_font_options_t to unset any previously set default font options
Sets which grid lines to draw in tree_view.
a GtkTreeViewGridLines value indicating which grid lines to enable.
Sets the horizontal adjustment of the GtkScrollable.
a GtkAdjustment
Sets the has-tooltip property on widget to has_tooltip.
whether or not widget has a tooltip.
Allow the column title buttons to be clicked.
%TRUE if the columns are clickable.
Sets the visibility state of the headers.
%TRUE if the headers are visible
Sets whether the widget would like any available extra horizontal space.
When a user resizes a GtkWindow, widgets with expand=TRUE
generally receive the extra space. For example, a list or
scrollable area or document in your window would often be set to
expand.
Call this function to set the expand flag if you would like your widget to become larger horizontally when the window has extra room.
By default, widgets automatically expand if any of their children
want to expand. (To see if a widget will automatically expand given
its current children and state, call [methodGtk.Widget.compute_expand].
A container can decide how the expandability of children affects the
expansion of the container by overriding the compute_expand virtual
method on GtkWidget.).
Setting hexpand explicitly with this function will override the automatic expand behavior.
This function forces the widget to expand or not to expand,
regardless of children. The override occurs because
[methodGtk.Widget.set_hexpand] sets the hexpand-set property (see
[methodGtk.Widget.set_hexpand_set]) which causes the widget’s hexpand
value to be used, rather than looking at children and widget state.
whether to expand
Sets whether the hexpand flag will be used.
The [propertyGtk.Widget:hexpand-set] property will be set
automatically when you call [methodGtk.Widget.set_hexpand]
to set hexpand, so the most likely reason to use this function
would be to unset an explicit expand flag.
If hexpand is set, then it overrides any computed expand value based on child widgets. If hexpand is not set, then the expand value depends on whether any children of the widget would like to expand.
There are few reasons to use this function, but it’s here for completeness and consistency.
value for hexpand-set property
Enables or disables the hover expansion mode of tree_view.
Hover expansion makes rows expand or collapse if the pointer
moves over them.
%TRUE to enable hover selection mode
Enables or disables the hover selection mode of tree_view.
Hover selection makes the selected row follow the pointer.
Currently, this works only for the selection modes
%GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
%TRUE to enable hover selection mode
Sets the GtkScrollablePolicy.
The policy determines whether horizontal scrolling should start below the minimum width or below the natural width.
the horizontal GtkScrollablePolicy
Sets the layout manager delegate instance that provides an
implementation for measuring and allocating the children of widget.
a GtkLayoutManager
Sets the amount of extra indentation for child levels to use in tree_view
in addition to the default indentation. The value should be specified in
pixels, a value of 0 disables this feature and in this case only the default
indentation will be used.
This does not have any visible effects for lists.
the amount, in pixels, of extra indentation in tree_view.
Sets the bottom margin of widget.
the bottom margin
Sets the end margin of widget.
the end margin
Sets the start margin of widget.
the start margin
Sets the top margin of widget.
the top margin
Sets a widgets name.
Setting a name allows you to refer to the widget from a
CSS file. You can apply a style to widgets with a particular name
in the CSS file. See the documentation for the CSS syntax (on the
same page as the docs for [classGtk.StyleContext].
Note that the CSS syntax has certain special characters to delimit and represent elements in a selector (period, #, >, *...), so using these will make your widget impossible to match by name. Any combination of alphanumeric symbols, dashes and underscores will suffice.
name for the widget
Request the widget to be rendered partially transparent.
An opacity of 0 is fully transparent and an opacity of 1 is fully opaque.
Opacity works on both toplevel widgets and child widgets, although there are some limitations: For toplevel widgets, applying opacity depends on the capabilities of the windowing system. On X11, this has any effect only on X displays with a compositing manager, see gdk_display_is_composited(). On Windows and Wayland it should always work, although setting a window’s opacity after the window has been shown may cause some flicker.
Note that the opacity is inherited through inclusion — if you set
a toplevel to be partially translucent, all of its content will
appear translucent, since it is ultimatively rendered on that
toplevel. The opacity value itself is not inherited by child
widgets (since that would make widgets deeper in the hierarchy
progressively more translucent). As a consequence, [classGtk.Popover]s
and other [ifaceGtk.Native] widgets with their own surface will use their
own opacity value, and thus by default appear non-translucent,
even if they are attached to a toplevel that is translucent.
desired opacity, between 0 and 1
Sets how widget treats content that is drawn outside the
widget's content area.
See the definition of [enumGtk.Overflow] for details.
This setting is provided for widget implementations and should not be used by application code.
The default value is %GTK_OVERFLOW_VISIBLE.
desired overflow
Sets parent as the parent widget of widget.
This takes care of details such as updating the state and style
of the child to reflect its new location and resizing the parent.
The opposite function is [methodGtk.Widget.unparent].
This function is useful only when implementing subclasses of
GtkWidget.
Sets a property on an object.
the name of the property to set
the value
Specifies whether widget will be treated as the default
widget within its toplevel when it has the focus, even if
another widget is the default.
whether or not widget can be a default widget.
This function is a convenience function to allow you to reorder
models that support the GtkTreeDragSourceIface and the
GtkTreeDragDestIface. Both GtkTreeStore and GtkListStore support
these. If reorderable is %TRUE, then the user can reorder the
model by dragging and dropping rows. The developer can listen to
these changes by connecting to the model’s GtkTreeModel::row-inserted
and GtkTreeModel::row-deleted signals. The reordering is implemented
by setting up the tree view as a drag source and destination.
Therefore, drag and drop can not be used in a reorderable view for any
other purpose.
This function does not give you any degree of control over the order -- any reordering is allowed. If more control is needed, you should probably handle drag and drop manually.
%TRUE, if the tree can be reordered.
Sets the row separator function, which is used to determine whether a row should be drawn as a separator. If the row separator function is %NULL, no separators are drawn. This is the default value.
a GtkTreeViewRowSeparatorFunc
Enables or disables rubber banding in tree_view. If the selection mode
is %GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
multiple rows by dragging the mouse.
%TRUE to enable rubber banding
Sets column as the column where the interactive search code should
search in for the current model.
If the search column is set, users can use the “start-interactive-search” key binding to bring up search popup. The enable-search property controls whether simply typing text will also start an interactive search.
Note that column refers to a column of the current model. The search
column is reset to -1 when the model is changed.
the column of the model to search in, or -1 to disable searching
Sets the entry which the interactive search code will use for this
tree_view. This is useful when you want to provide a search entry
in our interface at all time at a fixed position. Passing %NULL for
entry will make the interactive search code use the built-in popup
entry again.
Sets the compare function for the interactive search capabilities; note
that somewhat like strcmp() returning 0 for equality
GtkTreeViewSearchEqualFunc returns %FALSE on matches.
the compare function to use during the search
Sets the sensitivity of a widget.
A widget is sensitive if the user can interact with it. Insensitive widgets are “grayed out” and the user can’t interact with them. Insensitive widgets are known as “inactive”, “disabled”, or “ghosted” in some other toolkits.
%TRUE to make the widget sensitive
Sets whether to draw and enable expanders and indent child rows in
tree_view. When disabled there will be no expanders visible in trees
and there will be no way to expand and collapse rows by default. Also
note that hiding the expanders will disable the default indentation. You
can set a custom indentation in this case using
gtk_tree_view_set_level_indentation().
This does not have any visible effects for lists.
%TRUE to enable expander drawing, %FALSE otherwise.
Sets the minimum size of a widget.
That is, the widget’s size request will be at least width
by height. You can use this function to force a widget to
be larger than it normally would be.
In most cases, [methodGtk.Window.set_default_size] is a better
choice for toplevel windows than this function; setting the default
size will still allow users to shrink the window. Setting the size
request will force them to leave the window at least as large as
the size request.
Note the inherent danger of setting any fixed size - themes, translations into other languages, different fonts, and user action can all change the appropriate size for a given widget. So, it's basically impossible to hardcode a size that will always be correct.
The size request of a widget is the smallest size a widget can accept while still functioning well and drawing itself correctly. However in some strange cases a widget may be allocated less than its requested size, and in many cases a widget may be allocated more space than it requested.
If the size request in a given direction is -1 (unset), then the “natural” size request of the widget will be used instead.
The size request set here does not include any margin from the
properties
[propertyGtk.Widget:margin-start],
[propertyGtk.Widget:margin-end],
[propertyGtk.Widget:margin-top], and
[propertyGtk.Widget:margin-bottom], but it does include pretty
much all other padding or border properties set by any subclass
of GtkWidget.
width widget should request, or -1 to unset
height widget should request, or -1 to unset
Turns on flag values in the current widget state.
Typical widget states are insensitive, prelighted, etc.
This function accepts the values %GTK_STATE_FLAG_DIR_LTR and
%GTK_STATE_FLAG_DIR_RTL but ignores them. If you want to set
the widget's direction, use [methodGtk.Widget.set_direction].
This function is for use in widget implementations.
State flags to turn on
Whether to clear state before turning on flags
Sets the tip area of tooltip to the area path, column and cell have
in common. For example if path is %NULL and column is set, the tip
area will be set to the full area covered by column. See also
gtk_tooltip_set_tip_area().
Note that if path is not specified and cell is set and part of a column
containing the expander, the tooltip might not show and hide at the correct
position. In such cases path must be set to the current node under the
mouse cursor for this function to operate correctly.
See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
a GtkTooltip
a GtkTreePath
a GtkTreeViewColumn
a GtkCellRenderer
If you only plan to have simple (text-only) tooltips on full rows, you
can use this function to have GtkTreeView handle these automatically
for you. column should be set to the column in tree_view’s model
containing the tooltip texts, or -1 to disable this feature.
When enabled, GtkWidget:has-tooltip will be set to %TRUE and
tree_view will connect a GtkWidget::query-tooltip signal handler.
Note that the signal handler sets the text with gtk_tooltip_set_markup(), so &, <, etc have to be escaped in the text.
an integer, which is a valid column number for tree_view’s model
Sets markup as the contents of the tooltip, which is marked
up with Pango markup.
This function will take care of setting the
[propertyGtk.Widget:has-tooltip] as a side effect, and of the
default handler for the [signalGtk.Widget::query-tooltip] signal.
See also [methodGtk.Tooltip.set_markup].
the contents of the tooltip for widget
Sets text as the contents of the tooltip.
If text contains any markup, it will be escaped.
This function will take care of setting
[propertyGtk.Widget:has-tooltip] as a side effect,
and of the default handler for the
[signalGtk.Widget::query-tooltip] signal.
See also [methodGtk.Tooltip.set_text].
the contents of the tooltip for widget
Sets the vertical adjustment of the GtkScrollable.
a GtkAdjustment
Sets whether the widget would like any available extra vertical space.
See [methodGtk.Widget.set_hexpand] for more detail.
whether to expand
Sets whether the vexpand flag will be used.
See [methodGtk.Widget.set_hexpand_set] for more detail.
value for vexpand-set property
Sets the visibility state of widget.
Note that setting this to %TRUE doesn’t mean the widget is
actually viewable, see [methodGtk.Widget.get_visible].
This function simply calls [methodGtk.Widget.show] or
[methodGtk.Widget.hide] but is nicer to use when the
visibility of the widget depends on some condition.
whether the widget should be shown or not
Sets the GtkScrollablePolicy.
The policy determines whether vertical scrolling should start below the minimum height or below the natural height.
the vertical GtkScrollablePolicy
Returns whether widget should contribute to
the measuring and allocation of its parent.
This is %FALSE for invisible children, but also for children that have their own surface.
Flags a widget to be displayed.
Any widget that isn’t shown will not appear on the screen.
Remember that you have to show the containers containing a widget, in addition to the widget itself, before it will appear onscreen.
When a toplevel container is shown, it is immediately realized and mapped; other shown widgets are realized and mapped when their toplevel container is realized and mapped.
Snapshot the a child of widget.
When a widget receives a call to the snapshot function,
it must send synthetic [vfuncGtk.Widget.snapshot] calls
to all children. This function provides a convenient way
of doing this. A widget, when it receives a call to its
[vfuncGtk.Widget.snapshot] function, calls
gtk_widget_snapshot_child() once for each child, passing in
the snapshot the widget received.
gtk_widget_snapshot_child() takes care of translating the origin of
snapshot, and deciding whether the child needs to be snapshot.
This function does nothing for children that implement GtkNative.
a child of widget
GtkSnapshot as passed to the widget. In particular, no calls to gtk_snapshot_translate() or other transform calls should have been made.
Remove a specified datum from the object's data associations, without invoking the association's destroy handler.
name of the key
This function gets back user data pointers stored via
g_object_set_qdata() and removes the data from object
without invoking its destroy() function (if any was
set).
Usually, calling this function is only required to update
user data pointers with a destroy notifier, for example:
void
object_add_to_user_list (GObject *object,
const gchar *new_string)
{
// the quark, naming the object data
GQuark quark_string_list = g_quark_from_static_string ("my-string-list");
// retrieve the old string list
GList *list = g_object_steal_qdata (object, quark_string_list);
// prepend new string
list = g_list_prepend (list, g_strdup (new_string));
// this changed 'list', so we need to set it again
g_object_set_qdata_full (object, quark_string_list, list, free_string_list);
}
static void
free_string_list (gpointer data)
{
GList *node, *list = data;
for (node = list; node; node = node->next)
g_free (node->data);
g_list_free (list);
}
Using g_object_get_qdata() in the above example, instead of g_object_steal_qdata() would have left the destroy function set, and thus the partial string list would have been freed upon g_object_set_qdata_full().
A #GQuark, naming the user data pointer
Reverts the effect of a previous call to
g_object_freeze_notify(). The freeze count is decreased on object
and when it reaches zero, queued "notify" signals are emitted.
Duplicate notifications for each property are squashed so that at most one #GObject::notify signal is emitted for each property, in the reverse order in which they have been queued.
It is an error to call this function when the freeze count is zero.
Translate coordinates relative to src_widget’s allocation
to coordinates relative to dest_widget’s allocations.
In order to perform this operation, both widget must share a common ancestor.
a GtkWidget
X position relative to src_widget
Y position relative to src_widget
Triggers a tooltip query on the display where the toplevel
of widget is located.
Causes a widget to be unmapped if it’s currently mapped.
This function is only for use in widget implementations.
Dissociate widget from its parent.
This function is only for use in widget implementations, typically in dispose.
Causes a widget to be unrealized (frees all GDK resources associated with the widget).
This function is only useful in widget implementations.
Decreases the reference count of object. When its reference count
drops to 0, the object is finalized (i.e. its memory is freed).
If the pointer to the #GObject may be reused in future (for example, if it is an instance variable of another object), it is recommended to clear the pointer to %NULL rather than retain a dangling pointer to a potentially invalid #GObject instance. Use g_clear_object() for this.
Undoes the effect of
gtk_tree_view_enable_model_drag_dest(). Calling this method sets
GtkTreeView:reorderable to %FALSE.
Undoes the effect of
gtk_tree_view_enable_model_drag_source(). Calling this method sets
GtkTreeView:reorderable to %FALSE.
Turns off flag values for the current widget state.
See [methodGtk.Widget.set_state_flags].
This function is for use in widget implementations.
State flags to turn off
Updates an array of accessible properties.
This function should be called by GtkWidget types whenever an accessible
property change must be communicated to assistive technologies.
This function is meant to be used by language bindings.
an array of GtkAccessibleProperty
an array of GValues, one for each property
Updates an array of accessible relations.
This function should be called by GtkWidget types whenever an accessible
relation change must be communicated to assistive technologies.
This function is meant to be used by language bindings.
an array of GtkAccessibleRelation
an array of GValues, one for each relation
Updates an array of accessible states.
This function should be called by GtkWidget types whenever an accessible
state change must be communicated to assistive technologies.
This function is meant to be used by language bindings.
an array of GtkAccessibleState
an array of GValues, one for each state
Tests if the point at (x, y) is contained in widget.
The coordinates for (x, y) must be in widget coordinates, so
(0, 0) is assumed to be the top left of widget's content area.
X coordinate to test, relative to widget's origin
Y coordinate to test, relative to widget's origin
Similar to gtk_buildable_parser_finished() but is
called once for each custom tag handled by the buildable.
a GtkBuilder
child object or %NULL for non-child tags
the name of the tag
user data created in custom_tag_start
Called at the end of each custom element handled by the buildable.
GtkBuilder used to construct this object
child object or %NULL for non-child tags
name of tag
user data that will be passed in to parser functions
Called for each unknown element under <child>.
a GtkBuilder used to construct this object
child object or %NULL for non-child tags
name of tag
Gets whether the widget prefers a height-for-width layout or a width-for-height layout.
Single-child widgets generally propagate the preference of their child, more complex widgets need to request something either in context of their children or in context of their allocation capabilities.
Causes widget to have the keyboard focus for the GtkWindow it's inside.
If widget is not focusable, or its [vfuncGtk.Widget.grab_focus]
implementation cannot transfer the focus to a descendant of widget
that is focusable, it will not take focus and %FALSE will be returned.
Calling [methodGtk.Widget.grab_focus] on an already focused widget
is allowed, should not have an effect, and return %TRUE.
Reverses the effects of gtk_widget_show().
This is causing the widget to be hidden (invisible to the user).
Emits the ::keynav-failed signal on the widget.
This function should be called whenever keyboard navigation within a single widget hits a boundary.
The return value of this function should be interpreted
in a way similar to the return value of
[methodGtk.Widget.child_focus]. When %TRUE is returned,
stay in the widget, the failed keyboard navigation is OK
and/or there is nowhere we can/should move the focus to.
When %FALSE is returned, the caller should continue with
keyboard navigation outside the widget, e.g. by calling
[methodGtk.Widget.child_focus] on the widget’s toplevel.
The default [signalGtk.Widget::keynav-failed] handler returns
%FALSE for %GTK_DIR_TAB_FORWARD and %GTK_DIR_TAB_BACKWARD.
For the other values of GtkDirectionType it returns %TRUE.
Whenever the default handler returns %TRUE, it also calls
[methodGtk.Widget.error_bell] to notify the user of the
failed keyboard navigation.
A use case for providing an own implementation of ::keynav-failed
(either by connecting to it or by overriding it) would be a row of
[classGtk.Entry] widgets where the user should be able to navigate
the entire row with the cursor keys, as e.g. known from user
interfaces that require entering license keys.
direction of focus movement
Causes a widget to be mapped if it isn’t already.
This function is only for use in widget implementations.
Measures widget in the orientation orientation and for the given for_size.
As an example, if orientation is %GTK_ORIENTATION_HORIZONTAL and for_size
is 300, this functions will compute the minimum and natural width of widget
if it is allocated at a height of 300 pixels.
See GtkWidget’s geometry management section for
a more details on implementing GtkWidgetClass.measure().
the orientation to measure
Size for the opposite of orientation, i.e. if orientation is %GTK_ORIENTATION_HORIZONTAL, this is the height the widget should be measured with. The %GTK_ORIENTATION_VERTICAL case is analogous. This way, both height-for-width and width-for-height requests can be implemented. If no size is known, -1 can be passed.
Emits the ::mnemonic-activate signal.
See [signalGtk.Widget::mnemonic-activate].
%TRUE if there are other widgets with the same mnemonic
Emits a "notify" signal for the property property_name on object.
When possible, eg. when signaling a property change from within the class that registered the property, you should use g_object_notify_by_pspec() instead.
Note that emission of the notify signal may be blocked with g_object_freeze_notify(). In this case, the signal emissions are queued and will be emitted (in reverse order) when g_object_thaw_notify() is called.
Creates the GDK resources associated with a widget.
Normally realization happens implicitly; if you show a widget and all its parent containers, then the widget will be realized and mapped automatically.
Realizing a widget requires all the widget’s parent widgets to be
realized; calling this function realizes the widget’s parents
in addition to widget itself. If a widget is not yet inside a
toplevel window when you realize it, bad things will happen.
This function is primarily used in widget implementations, and
isn’t very useful otherwise. Many times when you think you might
need it, a better approach is to connect to a signal that will be
called after the widget is realized automatically, such as
[signalGtk.Widget::realize].
Activates the cell determined by path and column.
The GtkTreePath to be activated.
The GtkTreeViewColumn to be activated.
Set child as the current focus child of widget.
This function is only suitable for widget implementations.
If you want a certain widget to get the input focus, call
[methodGtk.Widget.grab_focus] on it.
Flags a widget to be displayed.
Any widget that isn’t shown will not appear on the screen.
Remember that you have to show the containers containing a widget, in addition to the widget itself, before it will appear onscreen.
When a toplevel container is shown, it is immediately realized and mapped; other shown widgets are realized and mapped when their toplevel container is realized and mapped.
Causes a widget to be unmapped if it’s currently mapped.
This function is only for use in widget implementations.
Causes a widget to be unrealized (frees all GDK resources associated with the widget).
This function is only useful in widget implementations.
This function essentially limits the life time of the closure to
the life time of the object. That is, when the object is finalized,
the closure is invalidated by calling g_closure_invalidate() on
it, in order to prevent invocations of the closure with a finalized
(nonexisting) object. Also, g_object_ref() and g_object_unref() are
added as marshal guards to the closure, to ensure that an extra
reference count is held on object during invocation of the
closure. Usually, this function will be called on closures that
use this object as closure data.
#GClosure to watch
Obtains the current default reading direction.
See [funcGtk.Widget.set_default_direction].
Find the #GParamSpec with the given name for an
interface. Generally, the interface vtable passed in as g_iface
will be the default vtable from g_type_default_interface_ref(), or,
if you know the interface has already been loaded,
g_type_default_interface_peek().
any interface vtable for the interface, or the default vtable for the interface
name of a property to look up.
Add a property to an interface; this is only useful for interfaces that are added to GObject-derived types. Adding a property to an interface forces all objects classes with that interface to have a compatible property. The compatible property could be a newly created #GParamSpec, but normally g_object_class_override_property() will be used so that the object class only needs to provide an implementation and inherits the property description, default value, bounds, and so forth from the interface property.
This function is meant to be called from the interface's default
vtable initialization function (the class_init member of
#GTypeInfo.) It must not be called after after class_init has
been called for any object types implementing this interface.
If pspec is a floating reference, it will be consumed.
any interface vtable for the interface, or the default vtable for the interface.
the #GParamSpec for the new property
Lists the properties of an interface.Generally, the interface
vtable passed in as g_iface will be the default vtable from
g_type_default_interface_ref(), or, if you know the interface has
already been loaded, g_type_default_interface_peek().
any interface vtable for the interface, or the default vtable for the interface
Creates a new instance of a #GObject subtype and sets its properties.
Construction parameters (see %G_PARAM_CONSTRUCT, %G_PARAM_CONSTRUCT_ONLY) which are not explicitly specified are set to their default values.
the type id of the #GObject subtype to instantiate
an array of #GParameter
Sets the default reading direction for widgets.
See [methodGtk.Widget.set_direction].
the new default direction. This cannot be %GTK_TEXT_DIR_NONE.
A widget for displaying both trees and lists
Widget that displays any object that implements the [iface
Gtk.TreeModel] interface.Please refer to the tree widget conceptual overview for an overview of all the objects and data types related to the tree widget and how they work together.
Coordinate systems in GtkTreeView API
Several different coordinate systems are exposed in the
GtkTreeViewAPI. These are:Widget coordinates: Coordinates relative to the widget (usually
widget->window).Bin window coordinates: Coordinates relative to the window that GtkTreeView renders to.
Tree coordinates: Coordinates relative to the entire scrollable area of GtkTreeView. These coordinates start at (0, 0) for row 0 of the tree.
Several functions are available for converting between the different coordinate systems. The most common translations are between widget and bin window coordinates and between bin window and tree coordinates. For the former you can use [method
Gtk.TreeView.convert_widget_to_bin_window_coords] (and vice versa), for the latter [methodGtk.TreeView.convert_bin_window_to_tree_coords] (and vice versa).GtkTreeViewasGtkBuildableThe
GtkTreeViewimplementation of theGtkBuildableinterface accepts [classGtk.TreeViewColumn] objects as<child>elements and exposes the internal [classGtk.TreeSelection] in UI definitions.An example of a UI definition fragment with
GtkTreeView:CSS nodes
GtkTreeViewhas a main CSS node with nametreeviewand style class.view. It has a subnode with nameheader, which is the parent for all the column header widgets' CSS nodes.Each column header consists of a
button, which among other content, has a child with namesort-indicator, which carries the.ascendingor.descendingstyle classes when the column header should show a sort indicator. The CSS is expected to provide a suitable image using the-gtk-icon-sourceproperty.For rubberband selection, a subnode with name
rubberbandis used.For the drop target location during DND, a subnode with name
dndtargetis used.