Windows 7 Dialog Update Different

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I have a dialog that updates a static control with a drawing thumbnail in OnInitDialog. This works fine on Windows XP but the initial update fails on Windows 7. Has something changed here? Once the dialog is displayed on Windows 7, any updates cause the thumbnail to redraw properly, but the first one fails...

Edit:

Further investigation reveals that it is 'Aero' theme on Windows 7 causing the problem, if I switch to the 'Classic' theme, the problem goes away.

Any idea how to handle that?

Edit 2:

I think the DWM is getting out of synce with the screen in some fashion, but
I can't find any way to kick the DWM into action on opening the dialog, perhaps I need to look through the DWM api...

Cheers

Posted 10-Dec-12 13:31pm

Kyudos

Updated 10-Dec-12 18:27pm

AnkitGoel.com

v4

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Eugen Podsypalnikov 11-Dec-12 2:09am

// but the first one fails...
What code is it ? :)

3 solutions

Solution 1

I had a similar problem that was somehow related to the Windows Colour Management. Please check this discussion[^] on how to set the correct Colour Profile (applies to Windows Photo Viewer, but will affect other programs as well)

Posted 11-Dec-12 12:19pm

chaau

Solution 3

does the static control is created ????

Posted 20-May-13 14:50pm

alannx

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Kyudos · Accepted Answer · 2013-03-27T11:22:00

Solution 2

Hack fix: I used a timer to run my refresh code fractionally after the dialog opens. It's ugly as sin but it works. I don't have time to figure out Windows behaviour!

Posted 27-Mar-13 11:22am

Kyudos