4D Doc Center : LISTBOX GET CELL POSITION

4D v13.4

LISTBOX GET CELL POSITION


LISTBOX GET CELL POSITION ( {* ;} object ; column ; row {; colVar} )

Parameter	Type	Description
*	Operator	If specified, object is an object name (string) If omitted, object is a variable
object	Form object	Object name (if * is specified) or Variable (if * is omitted)
column	Longint	Column number
row	Longint	Row number
colVar	Pointer	Pointer to column variable

Description

The LISTBOX GET CELL POSITION command returns the numbers of the column and the row that correspond to the location of the last mouse click or the last selection made via the keyboard in the listbox designated by * and object.

This command returns the coordinates of a click or a selection action even when data entry is not allowed in the list box.

Note: The number returned in the row parameter does not take into account any hidden/displayed states of list box rows.

If you pass the optional * parameter, you indicate that the object parameter is an object name (a string). If you omit this parameter, you indicate that the object parameter is a variable.

The optional colVar parameter returns a pointer to the variable (i.e. array) associated with the column.

This command can only be called in the framework of a list box that generates one of the following form events:

On Clicked and On Double Clicked
On Before Keystroke and On After Keystroke
On After Edit
On Getting Focus and On Losing Focus
On Data Change
On Selection Change
On Before Data Entry

When the command is called outside of this context, LISTBOX GET CELL POSITION returns 0 in both column and row.

This command takes into account any selection or deselection actions whether by mouse click, via keyboard keys, or using the EDIT ITEM command (which can generate the On Getting Focus event).

If the selection is modified using the arrow keys of the keyboard, column returns 0. In this case, if it is passed, the colVar parameter returns Nil.

The values returned by the command are not updated in the case of a right mouse click (or Control+click under Mac OS) on the header of a list box column..