The baseline of a widget
The bottom edge of a widget
The center of a widget, on the horizontal axis
The center of a widget, on the vertical axis
The trailing edge of a widget, depending on text direction; equivalent to %GTK_CONSTRAINT_ATTRIBUTE_RIGHT for LTR languages, and %GTK_CONSTRAINT_ATTRIBUTE_LEFT for RTL ones
The height of a widget
The left edge of a widget, regardless of text direction
No attribute, used for constant relations
The right edge of a widget, regardless of text direction
The leading edge of a widget, depending on text direction; equivalent to %GTK_CONSTRAINT_ATTRIBUTE_LEFT for LTR languages, and %GTK_CONSTRAINT_ATTRIBUTE_RIGHT for RTL ones
The top edge of a widget
The width of a widget
The widget attributes that can be used when creating a [class
Constraint].