HDC 1867 ext/gd/gd.c HDC hdc; HDC 1868 ext/gd/gd.c HDC memDC; HDC 1873 ext/gd/gd.c typedef BOOL (WINAPI *tPrintWindow)(HWND, HDC,UINT); HDC 1954 ext/gd/gd.c HDC hdc; HDC 1955 ext/gd/gd.c HDC memDC; HDC 1958 ext/gd/gd.c typedef BOOL (WINAPI *tPrintWindow)(HWND, HDC,UINT);