I have a multiple-select listbox that I want to clear all the selections in.
I'm using:
FF_ListBox_SetCurSel( HWND_FORM1_LIST1, -1 )
but it doesn't unselect anything?
after some more testing, I see that it works for a single select box, but not for multiple select.
I tried to read the contents of the listbox and unselect them one at a time, but that didn't work either.
Suggestions?
If you look at the source for the FF_ListBox_SetCurSel you will see that it calls the ListBox using the %LB_SETCURSEL message. Looking up that message in the api help it says.....
Use this message only with single-selection list boxes. You cannot use it to set or remove a selection in a multiple-selection list box.
When dealing with multiple selection listboxes, you use the %LB_SETSEL message to select or deselect items. The following code deselects all lines in the listbox.
Local NumItems As Long
Local y As Long
NumItems = FF_ListBox_GetCount( HWND_FORM1_LIST1 )
For y = 0 To NumItems - 1
SendMessage HWND_FORM1_LIST1, %LB_SETSEL, %FALSE, -1
Next
thanks