CDC::DrawEdge

Call this member function to draw the edges of a rectangle of the specified type and style.

BOOL DrawEdge( 
   LPRECT lpRect, 
   UINT nEdge, 
   UINT nFlags  
);

Parameters

lpRect
A pointer to a RECT structure that contains the logical coordinates of the rectangle.
nEdge
Specifies the type of inner and outer edge to draw. This parameter must be a combination of one inner-border flag and one outer-border flag. See DrawEdge in the Windows SDK for a table of the parameter's types.
nFlags
The flags that specify the type of border to be drawn. See DrawEdge in the Windows SDK for a table of the parameter's values. For diagonal lines, the BF_RECT flags specify the end point of the vector bounded by the rectangle parameter.

Nonzero if successful; otherwise 0.

Header: afxwin.h