Where is WS_EX_CLIENTEDGE coming from?

I have a window derived from CSplitterWnd in an OCX.  When the window is drawn (with or without splitter bars) it appears to have the 3d border WS_EX_CLIENTEDGE.  I want to turn this off but I’ve checked the Splitter’s window styles using Spy and it isn’t set.

Any ideas where this could be coming from?

Thanks,
Steve Kinney
kinney @ Filenet.com  

skinAsked:
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rhgaracciCommented:
Unfortunately, there are no splitter style options, in spite of the fact that it appears to be the style that you cited.  The only way to customize the splitter bars is to override the virtual member function CSplitterWnd::OnDrawSplitter.  The MFC version of this is in file  ...\mfc\src\WINSPLIT.CPP.  You could copy this function and change the calls to Draw3dRect to use the same colors for both sides of the lines.  This would elimate the 3d look.  You could also use another rectangle drawing methods such as FrameRect with a solid brush.

Of course, if you don't have the source for the OCX, you are probably out of luck.
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skinAuthor Commented:
Edited text of question
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rhgaracciCommented:
Since you do have a derived window, then you must override OnDrawSplitter() as I described in my answer.  Again, the easiest way is to cut and paste the code and then edit the drawing code.

If you just fake out 3d rect by using the same color, use the color that is used to fill the middle of the rect at the bottom of the MFC method which is

       COLORREF clr = afxData.clrBtnFace;

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rhgaracciCommented:
I would be curious about what your parent window is for the splitter window.  Splitter Windows are generally embedded in a CFrameWnd (or derived) class.
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rhgaracciCommented:
I appears that the window borders are being drawn by the same OnDrawSplitter() method called from DrawAllSplitBars().
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skinAuthor Commented:
The CSplitterWnd is in an OCX.
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