The FrameRgn function draws a border around the specified region by using the specified brush. 
BOOL FrameRgn(
  

    HDC  hdc,	// handle of device context 
    HRGN  hrgn,	// handle of region to be framed 
    HBRUSH  hbr,	// handle of brush used to draw border  
    int  nWidth,	// width of region frame 
    int  nHeight 	// height of region frame 
   );	
Parameters
hdc
Identifies the device context. 
hrgn
Identifies the region to be enclosed in a border. The region's coordinates are presumed to be in logical units. 
hbr
Identifies the brush to be used to draw the border. 
nWidth
Specifies the width, in logical units, of vertical brush strokes. 
nHeight
Specifies the height, in logical units, of horizontal brush strokes. 
Return Value
If the function succeeds, the return value is TRUE.
If the function fails, the return value is FALSE. 
See Also
FillRgn, PaintRgn 

 
