LRasterPaint::GetTransformation
#include "Ltwrappr.h"
L_INT LRasterPaint::GetTransformation(pXForm)
pPAINTXFORM pXForm; |
/* pointer to a structure */ |
Gets the toolkit's current transformation information.
Parameter |
Description |
pXForm |
Pointer to a PAINTXFORM structure to be updated with the current painting transformations. |
Returns
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes |
Comments
The transformation information is used for translating from external coordinates, such as mouse position, to the device context (DC) and/or bitmap coordinates.
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::SetTransformation, LRasterPaint::GetDCExtents, LRasterPaint::SetDCExtents, LRasterPaint::SetMetrics, Class Members |
Topics: |
Example
L_INT LRasterPaint_GetTransformationExample( LRasterPaint &rstp, CWnd* pWnd, LBitmap* pBitmap ) { L_INT nRet; CDC* pDC = pWnd->GetDC( ) ; RECT rcView ; RECT rcShapeRect ; PAINTXFORM PntXForm ; /* Get the Current painting transformations */ nRet = rstp.GetTransformation ( &PntXForm ) ; if(nRet != SUCCESS) return nRet; rcView.left = - PntXForm.nXOffset ; rcView.top = - PntXForm.nYOffset ; rcView.right = rcView.left + MulDiv ( pBitmap->GetWidth ( ), PntXForm.nZoom, 100 ) ; rcView.bottom = rcView.top + MulDiv ( pBitmap->GetHeight ( ), PntXForm.nZoom, 100 ) ; /* paint the bitmap */ pBitmap->Paint( )->SetDC( pDC->m_hDC ); pBitmap->SetDstRect( &rcView ); pBitmap->Paint( )->PaintDC(); /* Set the rectangle coordinates with respect to the DC dimensions*/ SetRect ( &rcShapeRect, 10, 10, 150, 150 ) ; /* Use the current shape properties to draw a rectangle to DC (hDC) */ nRet = rstp.DrawShapeRectangle ( pDC->m_hDC, &rcShapeRect ) ; if(nRet != SUCCESS) return nRet; /* Release the device context */ pWnd->ReleaseDC( pDC ) ; return SUCCESS ; }