LRasterPaint::DrawShapeRoundRect

#include "Ltwrappr.h"

L_INT LRasterPaint::DrawShapeRoundRect(UserDC, prcRect)

Draws a rounded rectangle using the specified points.

Parameters

HDC UserDC

Handle to a device context, such as a screen, to use as a display surface. This parameter can also be NULL. The mapping mode of the device context must be MM_TEXT.

LPRECT prcRect

Pointer to a RECT structure that specifies the rounded rectangle to be drawn.

Returns

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

Comments

The rounded rectangle will be drawn using the current shape properties. To determine the current shape properties, call LRasterPaint::GetProperty. To set or change the current shape properties, call LRasterPaint::SetProperty. For more information on the shape properties, refer to the PAINTSHAPE structure.

If UserDC is not NULL, the toolkit will paint the rounded rectangle on the specified device context. If UserDC is NULL, the rounded rectangle will not be painted on a device context.

If the UserDC is not NULL, the user should set the DC boundaries before calling this function, by calling LRasterPaint::SetDCExtents.

If a bitmap has been set using the LRasterPaint::SetMetrics function, the rounded rectangle will be drawn on the specified bitmap. If UserDC is not NULL and a bitmap has been set using the LRasterPaint::SetMetrics function, then the rounded rectangle will be drawn to both the device context and the bitmap.

Required DLLs and Libraries

See Also

Functions

Topics

Example

L_INT LRasterPaint_DrawShapeRoundRectExample( CWnd* pWnd )  
{ 
   L_INT          nRet; 
   LRasterPaint   rstp; 
   CDC*           pDC = pWnd->GetDC( ) ; 
   PAINTSHAPE     shape;  
   RECT           rcShape; 
   RECT           rcDCExtents ; 
 
   /* Initiate the Paint toolkit */ 
   nRet = rstp.Initialize ( ); 
   if(nRet != SUCCESS) 
      return nRet; 
 
   /* Get the current shape properties */ 
   nRet = rstp.GetProperty (PAINT_GROUP_SHAPE, &shape ) ; 
   if(nRet != SUCCESS) 
      return nRet; 
 
   /* Set the required shape properties */ 
   shape.nSize                   = sizeof ( PAINTSHAPE ) ; 
   shape.dwMask                  = PSF_BORDERWIDTH  | 
                                   PSF_BORDERSTYLE  | 
                                   PSF_BORDERCOLOR  | 
                                   PSF_BORDERENDCAP |  
                                   PSF_ROUNDRECTELLIPSEWIDTH | 
                                   PSF_ROUNDRECTELLIPSEHEIGHT ; 
   shape.nBorderWidth            = 5 ;  
   shape.nBorderStyle            = PAINT_SHAPE_BORDER_STYLE_DASH ;  
   shape.crBorderColor           = RGB ( 255, 0, 0 ) ; 
   shape.nBorderEndCap           = PAINT_SHAPE_BORDER_ENDCAP_FLAT ; 
   shape.nRoundRectEllipseWidth  = 30 ;  
   shape.nRoundRectEllipseHeight = 30 ;  
 
   /* Set the new shape properties */ 
   nRet = rstp.SetProperty (PAINT_GROUP_SHAPE, &shape ) ; 
   if(nRet != SUCCESS) 
      return nRet; 
 
   /* Set the rectangle coordinates with respect to the DC dimensions*/ 
   SetRect ( &rcShape, 10, 10, 200, 200 ) ; 
 
   /* Get the destination DC dimensions */   
   pWnd->GetClientRect ( &rcDCExtents ) ; 
 
   /* Set the toolkit user DC extents */ 
   nRet = rstp.SetDCExtents ( &rcDCExtents ) ; 
   if(nRet != SUCCESS) 
      return nRet; 
 
   /* Use the current shape properties to draw a rounded rectangle to the DC (hDC) */ 
   nRet = rstp.DrawShapeRoundRect ( pDC->m_hDC, &rcShape ) ; 
   if(nRet != SUCCESS) 
      return nRet; 
 
   /* Free the paint tools handle */ 
   nRet = rstp.Free ( ) ; 
   if(nRet != SUCCESS) 
      return nRet; 
 
   pWnd->ReleaseDC( pDC ) ; 
 
   return SUCCESS ; 
} 
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