This function is specific to OS/2 Version 2.1 or higher.

This function causes the mouse pointer to change into the symbol described by hptrNew for the period of time indicated by ulTimeInterval.

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

HWND        hwndDesktop;     /*  Handle to the desktop window. */
HPOINTER    hptrNew;         /*  Pointer handle to be displayed. */
ULONG       ulTimeInterval;  /*  Time interval. */
BOOL        rc;              /*  Success indicator. */

rc = WinLockPointerUpdate(hwndDesktop, hptrNew,
       ulTimeInterval);