References ▼
#include "Ltwrappr.h"
L_INT LRasterPaint::RegionScale(nHScaleFactor, nVScaleFactor, nAlignment, phDestRgn)
Scales a region.
Horizontal scale factor. Valid values are between 1 and 10000. For example:
| Value | Meaning |
|---|---|
| 100 | The same dimensions. |
| 110 | 1.1 times the original dimensions. |
| 120 | 1.2 times the original dimensions. |
| 10000 | 100 times the original dimensions. |
| 99 | 0.99 times the original dimensions. |
| 98 | 0.98 times the original dimensions. |
| 1 | 0.01 times the original dimensions. |
Vertical scale factor. Valid values are between 1 and 10000. For example:
| Value | Meaning |
|---|---|
| 100 | The same dimensions. |
| 110 | 1.1 times the original dimensions |
| 120 | 1.2 times the original dimensions. |
| 10000 | 100 times the original dimensions. |
| 99 | 0.99 times the original dimensions. |
| 98 | 0.98 times the original dimensions. |
| 1 | 0.01 times the original dimensions. |
A value that determines how the scaled region will be aligned with respect to the original region. For a list of possible values, refer to PAINTALIGNMENT.
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 user is responsible for deleting the resulting region.
Required DLLs and Libraries
L_INT LRasterPaint_RegionScaleExample( 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, 250, 110, 350, 210 ) ;/* Use the current region properties and the current paintingtransformations to create an ellipse region */nRet = rstp.RegionEllipse ( pDC->m_hDC, &rcRegion, &hDestRgn ) ;if(nRet != SUCCESS)return nRet;/* Display the resulted region */FrameRgn ( pDC->m_hDC, hDestRgn, ( HBRUSH ) GetStockObject ( BLACK_BRUSH ), 1, 1 ) ;/* Scale the region */nRet = rstp.RegionScale (300, 300,( PAINTALIGNMENT ) (PAINT_ALIGNMENT_HCENTER | PAINT_ALIGNMENT_VCENTER),&hDestRgn ) ;if(nRet != SUCCESS)return nRet;/* Display the scaled 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 ;}