gpi12.hlp (Table of Contents; Topic list)
GpiDestroyRegion (1.2)
Function Group  Overview                          Up Next Previous
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#define INCL_GPIREGIONS
 
BOOL GpiDestroyRegion(hps, hrgn)
HPS hps;      /* presentation-space handle   */
HRGN hrgn;    /* handle of region to destroy */
 
The GpiDestroyRegion function destroys the region specified by hrgn. The
function destroys the region only if the device context containing the
region is associated with the given presentation space.
 
Parameter  Description
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hps        Identifies the presentation space.
 
hrgn       Identifies the region to destroy.
 
Return Value
 
The return value is GPI_OK if the function is successful or GPI_ERROR if an
error occurred.
 
Errors
 
Use the WinGetLastError function to retrieve the error value, which may be
one of the following:
 
     PMERR_INV_HPS
     PMERR_INV_HRGN
     PMERR_PS_BUSY
     PMERR_REGION_IS_CLIP_REGION
 
Example
 
This example uses the GpiDestroyRegion function to destroy a region after
drawing a complex figure:
 
HRGN hrgn;
RECTL arcl[3] = { 10, 10, 20, 20, 15, 15, 25, 25, 20, 20, 30, 30 };
 
hrgn = GpiCreateRegion(hps, 3L, arcl); /* use 3 rectangles   */
GpiPaintRegion(hps, hrgn);             /* paint the region   */
GpiDestroyRegion(hps, hrgn);           /* destroy the region */
 
See Also
 
GpiCreateRegion, WinGetLastError