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VC++ MFC Tutorial: GDI, Paint, CPaintDC, OnPaint, WM_PAINT
 
 

Paint-Time Device Contexts

The CPaintDC class encapsulates the calls to the BeginPaint and EndPaint in its constructor and destructor. This class is designed to be used when responding to WM_PAINT messages.

Note that most applications do not need to create a CPaintDC object directly. The default implementation of the Cview::OnPaint member function creates such a device context and passes it to the class's OnDraw member function (which is usually overridden to provide application-specific drawing of a view).

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