This function draws the borders and interior of a rectangle.

#define INCL_WINWINDOWMGR /* Or use INCL_WIN, INCL_PM, */
#include <os2.h>

HPS       hps;      /*  Presentation-space handle. */
PRECTL    prcl;     /*  Bounding rectangle for the border. */
LONG      cx;       /*  Width of border rectangle vertical sides. */
LONG      cy;       /*  Width of border rectangle horizontal sides. */
LONG      clrFore;  /*  Color of edge of border. */
LONG      clrBack;  /*  Color of interior of border. */
ULONG     flCmd;    /*  Flags controlling the way in which the border is drawn. */
BOOL      rc;       /*  Success indicator. */

rc = WinDrawBorder(hps, prcl, cx, cy, clrFore,
       clrBack, flCmd);