CWindowDC Class
Derived from CDC.
class CWindowDC : public CDC
Remarks
Calls the Windows functions GetWindowDC at construction time and ReleaseDC at destruction time. This means that a CWindowDC object accesses the entire screen area of a CWnd (both client and nonclient areas).
For more information on using CWindowDC, see Device Contexts.
Requirements
Header: afxwin.h