Creates a rectangular region that is stored in the CRgn object.
BOOL CreateRectRgn(
int x1,
int y1,
int x2,
int y2
);
Parameters
x1
Specifies the logical x-coordinate of the upper-left corner of the region.y1
Specifies the logical y-coordinate of the upper-left corner of the region.x2
Specifies the logical x-coordinate of the lower-right corner of the region.y2
Specifies the logical y-coordinate of the lower-right corner of the region.
Return Value
Nonzero if the operation succeeded; otherwise 0.
Remarks
The size of a region is limited to 32,767 by 32,767 logical units or 64K of memory, whichever is smaller.
When it has finished using a region created by CreateRectRgn, an application should use the CGDIObject::DeleteObject member function to remove the region.
Example
CRgn rgn;
BOOL bSucceeded = rgn.CreateRectRgn( 50, 20, 150, 120 );
ASSERT( bSucceeded == TRUE );
For an additional example, see CRgn::CombineRgn.
Requirements
Header: afxwin.h