The CPaintDC class is a device-context class derived from CDC. It performs a CWnd::BeginPaint at construction time and CWnd::EndPaint at destruction time.
A CPaintDC object can only be used when responding to a WM_PAINT message, usually in your OnPaint message-handler member function.
For more information on using CPaintDC, see Device Contexts in Visual C++ Programmer’s Guide.
#include <afxwin.h>
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