Added GLCanvas library (Win only at present).
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@546 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
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utils/glcanvas/docs/notes.txt
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utils/glcanvas/docs/notes.txt
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Problems with wxGLCanvas, 29/8/98
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Only the cube example compiles under wxWin 2 so far.
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Major problem: OpenGL seems to do something strange to the
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event loop, because wxApp::OnIdle never gets a chance to be
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called, and therefore delayed deletion (and all other
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idle-related processing) doesn't get done. This is why closing
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the app doesn't work.
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What does OpenGL do to message processing, and what can be done
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about it? Why did it work OK for wxWin 1.xx? It's as if
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there's _always_ a message in the queue (PeekMessage always
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returns non-zero). Perhaps we need to discover what the message
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is it's always returning.
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