This example copies a rectangle using WinCopyRect.

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

BOOL  fSuccess;         /* success indicator                    */
HAB   hab;              /* anchor-block handle                  */
RECTL prclRect2 = {0,0,200,200}; /* source rectangle            */
RECTL prclRect1;        /* destination rectangle                */

fSuccess = WinCopyRect(hab, &prclRect1, &prclRect2);