This function is used by the mouse subsystem to obtain the entry point address of the pointer draw routine. The pointer draw routine is contained within the physical Pointer Draw device driver. It is called by the physical Mouse device driver to update the pointer image on the screen. The Far-16 address returned by Function 72h is passed by the mouse subsystem to the physical mouse device driver through an IOCtl interface. See Category 07h Mouse Control IOCtl Commands. The physical mouse device driver saves the Far-16 address passed and uses it when calling the pointer draw routine.

This function is supported by the physical Pointer Draw device driver.