BOOL PatBlt(
HDC hdc, // handle to device context
int nXLeft, // x-coord. of upper-left corner of rect. to be filled
int nYLeft, // y-coord. of upper-left corner of rect. to be filled
int nWidth, // width of rectangle to be filled
int nHeight, // height of rectangle to be filled
DWORD dwRop // raster operation code
);
virtual int GetClipBox( LPRECT lpRect ) const;Return ValueThe clipping region’s type. It can be any of the following values: COMPLEXREGION Clipping region has overlapping borders.
ERROR Device context is not valid.
NULLREGION Clipping region is empty.
SIMPLEREGION Clipping region has no overlapping borders.
Parameters//我英文有限,请各位打下执教,感激涕零~可是我没分了,大家不要介意
以后一定补上
记住是搜索