Determines whether any part of the rectangle specified by lpRect is within the boundaries of the region stored in the CRgn object.
BOOL RectInRegion(
   LPCRECT lpRect 
) const;
Parameters
- lpRect 
 Points to a RECT structure or CRect object. The RECT structure has the following form:- typedef struct tagRECT { - int left; - int top; - int right; - int bottom; - } RECT; 
Return Value
Nonzero if any part of the specified rectangle lies within the boundaries of the region; otherwise 0.
Requirements
Header: afxwin.h