LRasterPaint::GetClipRgn

#include "Ltwrappr.h"

L_INT LRasterPaint::GetClipRgn(phClipRgn)

pHRGN phClipRgn;

/* pointer to a Windows region handle */

Gets the current clipping region, set using the LRasterPaint::SetClipRgn function.

Parameter	Description
phClipRgn	Pointer to a Windows region handle to be updated with the current clipping region.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes

Comments

The phClipRgn parameter is updated with a windows region, which is a snapshot of the current clipping region, used by the toolkit. The user is responsible for deleting this region.

Required DLLs and Libraries

LTPNT

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application

See Also

Functions:	LRasterPaint::SetClipRgn, LRasterPaint::OffsetClipRgn, Class Members
Topics:	Setting a DigitalPaint Clipping Region

Example

L_INT LRasterPaint_GetClipRgnExample( LRasterPaint*  pRstp )
{
   L_INT    nRet;
   HRGN     hRgn, hClipRgn ;
   /* create some region */
   hRgn = CreateRectRgn ( 0, 0, 100, 100 ) ;
   /* get the current painting tools clip region */
   nRet = pRstp->GetClipRgn ( &hClipRgn ) ;
   if(nRet != SUCCESS)
      return nRet;
   /* combine the regions */
   CombineRgn ( hRgn, hClipRgn, hRgn, RGN_OR ) ;
   /* set the painting tools new clip region */
   nRet = pRstp->SetClipRgn ( hRgn ) ;
   if(nRet != SUCCESS)
      return nRet;
   /* delete the regions */
   DeleteObject ( ( HRGN ) hRgn ) ;
   DeleteObject ( ( HRGN ) hClipRgn ) ;
   return SUCCESS;
}