Re: Controls won't get resized in deep window hierarchies

Oh! I found the culprit: SetPoint software from Logitech. When it's
stopped, everything is fine. When it is started, the problem shows up,
even on a 32-bit Vista.

This is stranger now, I can't even fathom the interactions. The
question is how can I change my application to make sure it works even
with Setpoint active...

Tue, Apr 21, 2009 at 10:29 AM, Catalin Rotaru <[email protected]> wrote:
> Hi Nenad,
>
> My window hierarchy is only 8 levels deep. There are tens of sibling
> windows (controls) on each level, but I don't know if that has any
> influence on the result. Stack size is system default.
>
> The problem has only appeared so far on a few Vista 64 computers (not
> all of them) and never on 32-bit OSs (Vista or XP).
>
> If you want, I can run your test app and let you know if I can
> reproduce the problem.
>
> Thanks for the custom message idea - I'll give it a try.
>
> All the best,
> Cata
>
> On Sun, Apr 19, 2009 at 1:33 PM, Nenad Stefanovic <[email protected]> wrote:
>>
>>
>> This is pretty strange problem. Based on the description, it seems to me
>> that it is related to the stack size.
>>
>> Just for fun, I tried that on Vista 32-bit - I was able to get ~30 levels
>> deep. I was also able to go much further by posting a custom message on
>> 20-th level, and in handler for that message do the same as WM_SIZE handler
>> would do. So, you can do the same - you'll need to change some of the
>> classes that you have.
>>
>> Now, after saying all this, I have to note that if you have more than 15
>> level deep hierarchy, you should consider redesigning your app. I know that
>> splitters, panes, etc. can easily add depth levels, but over 15 sounds a bit
>> extreme.
>>
>> Cheers,
>>
>> Nenad
>>
>> From: [email protected] [mailto:[email protected]] On Behalf Of Catalin
>> Rotaru
>> Sent: Thursday, April 16, 2009 1:35 PM
>> To: [email protected]
>> Subject: [wtl] Controls won't get resized in deep window hierarchies
>>
>> We have an application with a complex hierarchy of Splitters, Pannels
>> and Resizable dialog-views. Recently we noticed that on 64-bit Vista
>> resizing the main frame would fail to resize the inner-most windows or
>> controls.
>>
>> A bit of research got me to this:
>>
>> http://blogs.msdn.com/alejacma/archive/2008/11/20/controls-won-t-get-resized
>> -once-the-nesting-hierarchy-of-windows-exceeds-a-certain-depth-x64.aspx
>>
>> Turns out that recursive calls WM_SIZE must not exceed a certain depth
>> which on x64 is not very large.
>>
>> It's a known bug. An awful one. Yet another reason to make me want to
>> switch to a HWND-free framework, and to never have to deal with the
>> problems and limitations Microsoft has in Windows' controls.
>>
>> Anyway, the question is now: what to do? Anybody had encountered this
>> problem before? Suggestions of a workaround? I can't exactly change my
>> hierarchy thus I need a way to deliver the WM_SIZE messages
>> non-recursively. But they are triggered by main frame resizes and the
>> recursive calls are in CDialogResize, Splitter and Panel. So I am at a
>> loss.
>>
>> Any suggestions are GREATLY appreciated.
>>
>> Thanks,
>> Cata
>>
>


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