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Re: GLCtrl display error on Vista [message #18444 is a reply to message #16549]

Wed, 01 October 2008 14:50

kodos
Messages: 111
Registered: March 2008

Experienced Member

Hi,

I think I have to open this thread again.
The problem is still there with the flickering in Vista, even if it is far better with the patch from luzr.
After I have reread the article on opengl.org I think I have found the problem. The WS_CLIPCHILDREN and WS_CLIPSIBLINGS have to be set on the parent window of the OpenGl control, not on the control itself.
With the following changes I haven't noticed any flickering yet:

TopWin32.cpp:86

style |= WS_CAPTION|WS_CLIPSIBLINGS|WS_CLIPCHILDREN;

CtrlCore.h:1767

void Refresh() { InvalidateRect(GetHWND(), NULL, false); }

I don't call the Refresh() from Ctrl because in my tests it is not needed, but I have just done my tests with the GLCtrl Wink

and I don't know exactly what Refresh is doing.

DHCtrl.cpp:36

CreateWindowEx(0, "UPP-CLASS-A", "",
		               WS_CHILD|WS_DISABLED|WS_VISIBLE,
		               0, 0, 20, 20,
		               phwnd, NULL, hInstance, this);

The WS_CLIPSIBLINGS and WS_CLIPCHILDREN styles can be removed from here again.

But I don't know if this changes have some side effects with other controls that derive from DHCtrl, I really just know the GLCtrl and my custom CairoCtrl. Smile

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