Thread: Quick listbox question

I was wondering, is it possible to deselect the selected item in a listbox by clicking in the white space of the listbox? If so, what notification would this be so I can do more than just deselect the item? Thanks for any help.

I meant the white space below the last item in a list box, where all the items in the listbox DONT fill the entire height of the listbox.

And there's no way around that?

I know I can do this:

SendMessage(hListBox, LB_SETCURSEL, (WPARAM)-1, 0);

But I'm unsure as to where.

Another option is to use a listview control and handle the NM_CLICK notfication.

Thanks for your help. I'll try to subclass the listbox.

I've made my own way and I don't care if its the best way because it works for me:

Code:

case LBN_SELCHANGE: {
	int x = SendMessage(hWndList, LB_GETCURSEL, 0, 0);
	if(x != LB_ERR) {
		RECT rc;
		GetWindowRect(hWndList, &rc);
		int y = SendMessage(hWndList, LB_GETCOUNT, 0, 0);
		int z = SendMessage(hWndList, LB_GETITEMHEIGHT, 0, 0);
		y = y * z + rc.top + 2; // 2 because its 2 pixels from top of listbox to the top of the first item
		POINT pt;
		GetCursorPos(&pt);
		if(pt.y > x) {
			// In white space code
		} else {
			// Clicked item code
		}
	}
	break;
}