[Bug 7085] Weatherscope filtering of combo boxes is broken

Wine Bugs wine-bugs at winehq.org
Wed Mar 28 09:28:43 CDT 2007


http://bugs.winehq.org/show_bug.cgi?id=7085





------- Additional Comments From rmay at ou.edu  2007-28-03 09:28 -------
>The text field that acts as a filter has a window timer installed that
>fires every 100 msec. When the timer fires, it checks to see if the
>text has changed since the last call and sends a custom window message
>(msg == 1001) to its parent window.
According to one of the Weatherscope developers, this is how the filtering works:

>When the parent window receives that message, it rebuilds the radar
>combo box using the same function it used when it was originally
>constructed. The only difference it that now it has a filter string to
>apply to the radar names. When we rebuild the combo box, we completely
>remove all of the items and add back the ones that match the filter
>string one at a time.

>So, as far as Win32 is concerned, there should be a WM_TIMER message
>firing on the text field's HWND about 10 times a second. A custom
>window message of 1001 should be sent to the radar dialog's HWND if the
>text was changed between successive timer messages. We use SendMessage
>to add and remove items from the combo box (CB_DELETESTRING to remove,
>CB_INSERTSTRING to add).

As far as I can tell from a +message,+edit,+combo trace, the WM_TIMER messages
stop being dispatched once one clicks in the line edit, and instead I see
WM_SYSTIMER messages being sent.  After the aforementioned clicking around, the
WM_TIMER messages are sent again and filtering works.  Anyone have _any_ idea
what could be going on here?


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