AutoHotkey Community

[JBensimon]

No idea if the following behavior is even within the control of AHK or is a Windows quirk, but multi-select listboxes with the "8" option (to make the use of Ctrl or Shift unnecessary) act unexpectedly when there is white space below the last list item (by virtue of the listbox being taller than necessary). Specifically, clicking anywhere within the white space below the last item in the list causes the list item that was last clicked to be toggled again, i.e. clicking the white space is equivalent to clicking whichever item in the list was last clicked, regardless of its position in the list.

Example:

Gui, Add, ListBox, h200 0x8, abc|def|ghi|jkl|mno
Gui, Show

Click say the "def" item, then start clicking in the empty area below the "mno" item. Each new click in that area toggles "def" back and forth.

No biggie, just curious.

Jacques.

[toralf]

I'm not sure if that helps, but I could reproduce this behaviour on my machine
XP Pro SP2
AHK 1.0.31.05
_________________
Ciao
toralf

[Chris]

When you click a ListBox, the click goes directly to the control itself. Since the ListBox code is built into the OS, how it handles the click is entirely up to it.

So this strange behavior might be by design, perhaps some ease-of-use or shortcut feature. It could also be a bug, in which case it could probably be patched (if it's really important to anyone) by overriding the control's code and substituting a custom click handler.

Thanks for reporting it.

[JBensimon]

Totally not important as far as I can tell. Just for my own curiosity, are AHK controls implemented via COMCTL32.DLL?

Jacques.

[Chris]

Yes, they're all from COMCTL32.DLL.

[JBensimon]

Thanks, Chris (and thanks toralf for the confirmation).

Jacques.