Source of Bug Found.

Thales thaleslv at
Sun Nov 3 23:21:49 CST 2019

 I noticed on Bugzilla that there was a follow up on this by Fabian Maurer.   I posted my findings below his.
Here is the link:

Here is what I wrote:"I've been working on this one while learning Wine code.  I wrote an app for this a while ago using some Windows API calls.

What I found was that for a Combobox the CB_SETITEMHEIGHT message was taking precedence over SetWindowPos() in Wine, whereas in Windows the last one called is what takes precedence.

I noticed that CB_SETITEMHEIGHT locks the height in in the function GB_GetTextAreaHeight() in dlls/comctl32/combo.c (and probably in the user32/combo.c as well). 

 I'm not familiar enough with Wine's code to make a repair right now, but, at the very least, this shows a divergence between Wine and Windows. 

 I'll study the code more to see if I can fix it."
Regards,...John Alway    On Wednesday, October 30, 2019, 07:10:59 PM CDT, Thales <thaleslv at> wrote:  
Hello Alistair.
I'm working on Bug #47489"The appearance of configurable options in Audacity is broken"

Basically the bug is that comboboxes are displayed with the wrong height.
I see that I may have written the test in the wrong way.  I wrote my test in Visual Studio on Windows.   It demonstrates the error by honing in on some api calls.   However, I just read the article linked below under the heading "Writing Tests".  Is that the way I should go about writing my test?

Thanks for your feedback!
...John Alway

    On Tuesday, October 29, 2019, 11:58:58 PM CDT, Alistair Leslie-Hughes <leslie_alistair at> wrote:  
Hi John,

What bug are you referring to?

If the patch isn't too big, sent it the list without a signoff and a comment asking for a review.

And/Or attach it the bug report, however reviews aren't done on bugzilla patches, but the code wouldn't be lost either.



On 30/10/19 3:39 pm, Thales wrote:

Hello everyone,
I was able to figure out the source of a bug for one of the bugs listed in Bugzilla.  I wrote a little demo app with Windows API functions to show it.   I hesitated to fix the problem in Wine, because the code is complex and therefore wasn't sure what the ramifications would be.
How do I go about presenting this to those who deal with bugs?  
Many thanks for any feedback!
Regards,John Alway
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