This example compares two rectangles for equality.

#define INCL_WINRECTANGLES      /* Window Rectangle Functions   */
#include <os2.h>

BOOL  fEqual;           /* equal indicator                      */
HAB     hab;            /* anchor-block handle                  */
RECTL prclRect1 = {0,0,100,100}; /* first rectangle             */
RECTL prclRect2 = {0,0,200,200}; /* second rectangle            */

fEqual = WinEqualRect(hab, &prclRect1, &prclRect2);