The CreateRectRgnIndirect function creates a rectangular region.
HRGN CreateRectRgnIndirect(
CONST RECT *lprc // pointer to the rectangle
);
If the function succeeds, the return value is the handle to the region.
If the function fails, the return value is NULL.
Windows NT: To get extended error information, call GetLastError.
The region will be exclusive of the bottom and right edges.
Windows CE: Windows CE represents regions using 16-bit values.
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in wingdi.h.
Import Library: Use gdi32.lib.
Regions Overview, Region Functions, CreateRectRgn, CreateRoundRectRgn, DeleteObject, RECT, SelectObject