Translates ( offsets ) a region.
#include "Ltwrappr.h"
L_INT LRasterPaint::RegionTranslate(dx, dy, phRgn)
X-coordinate offset.
Y-coordinate offset.
Pointer to the region to be translated. After translation, the toolkit will delete the old region and replace it with the new one.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes |
The values for dx and dy will be used "as is". No transformation will be performed on these values.
The user is responsible for deleting the resulting region.
L_INT LRasterPaint_RegionTranslateExample( CWnd* pWnd )
{
L_INT nRet;
LRasterPaint rstp ;
CDC* pDC = pWnd->GetDC() ;
RECT rcRegion ;
HRGN hDestRgn ;
/* Initiate the Paint toolkit */
nRet = rstp.Initialize ( );
if(nRet != SUCCESS)
return nRet;
/* Set the coordinates with respect to the DC dimensions*/
SetRect ( &rcRegion, 10, 10, 100, 100 ) ;
/* Use the current region properties and the current painting
transformations to create a rectangle region */
nRet = rstp.RegionRect ( pDC->m_hDC, &rcRegion, &hDestRgn) ;
if(nRet != SUCCESS)
return nRet;
/* Translate the region */
nRet = rstp.RegionTranslate (50, 50, &hDestRgn ) ;
if(nRet != SUCCESS)
return nRet;
/* Display the resulted region */
FrameRgn ( pDC->m_hDC, hDestRgn, ( HBRUSH ) GetStockObject ( BLACK_BRUSH ), 1, 1 ) ;
/*Delete the region */
DeleteObject ( hDestRgn ) ;
/* Free the paint tools handle */
nRet = rstp.Free ( ) ;
if(nRet != SUCCESS)
return nRet;
pWnd->ReleaseDC( pDC ) ;
return SUCCESS ;
}