Re: Print Preview Behavior in an MFC app
This looks like quite an easy fix. I am going to give it a try. The only
concern seems, like you said, IsFrameWnd which is only relevant when called
by GetParentFrame. I believe I have a few GetParentFrame calls, but I usually
put a safeguard with a IsKindOf call to verify that the frame returned is
"Anthony Wieser" wrote:
I found a partial old solution on CodeGuru, and followed up a lead from one
of the commenters
Now, what I ended up doing was in my CMDIChildDerived class I added a member
and added this change of implmentation for is frame wnd.
BOOL CMDIChildDerived::IsFrameWnd() const
return m_bPrintPreviewFrameHack ? FALSE : CMDIChildWnd::IsFrameWnd();
Then in my view class, I handle OnFilePrintPreview, where I get my parent
(the CMDIChildDerived class), and set it's hack flag, and then call the
My first try was to immediately set the flag back as the commenter suggests,
but that caused an assertion failure.
So, I decided to try overriding CView::OnEndPrintPreview, and setting it
back there, after calling the default.
The net effect is that while my program is in preview mode, I claim my
window isn't a frame wnd.
Obviously this will break if for whatever reason my code were to call
GetParentFrame inside print preview, but I don't do this in my code.
Maybe this will work for you too.
Wieser Software Ltd
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