The #EDataBookCursorCompareContactFunc delegate to compare an #EContact with the cursor position
The #EDataBookCursorGetPositionFunc delegate to calculate the current total and position values
The #EDataBookCursorLoadLocaleFunc delegate used to reload the locale setting
The #EDataBookCursorSetAlphabetIndexFunc delegate to set the alphabetic position
The #EDataBookCursorSetSexpFunc delegate to set the search expression
The #EDataBookCursorStepFunc delegate to navigate the cursor
Methods to implement on an #EDataBookCursor concrete class.