#include "ltwrappr.h"

virtual L_INT LBitmapRgn::SetRgnCurve(pCurve)

pCURVE pCurve;

pointer to a structure

Creates or updates the region of the class object's associated bitmap by adding a curved region.




Pointer to the CURVE structure that specifies the curve region. The structure is specified using device context coordinates, and LEADTOOLS translates the coordinates using the values specified in the LBitmapRgn::SetRgnXForm parameter.



The function was successful.

< 1

An error occurred. Refer to Return Codes.


To update an existing region, use the LBitmapRgn::SetRgnCombineMode function to specify how the new region is to be combined with the existing one. For descriptions of the possibilities, refer to Creating a Bitmap Region.

Required DLLs and Libraries


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


Win32, x64.

See Also


LBitmapRgn::CurveToBezier, LBitmapRgn::SetRgnColorHSVRange, LBitmapRgn::SetRgnColorRGBRange, Class Members


Raster Image Functions: Creating and Using a Region


Raster Image Functions: Region Processing


Creating a Bitmap Region


Working with the Existing Bitmap Region


Saving a Region


L_INT LBitmapRgn__SetRgnCurveExample(LBitmap & Bitmap) 
   L_INT nRet; 
   CURVE curve; 
   POINT pt[5]; 
   L_INT nWidth = Bitmap.GetWidth(); 
   L_INT nHeight = Bitmap.GetHeight(); 
   LBitmapRgn Region; 
   pt[0].x = nWidth / 4; 
   pt[0].y = nHeight / 4; 
   pt[1].x = nWidth / 4; 
   pt[1].y = 3 * nHeight / 4; 
   pt[2].x = 3 * nWidth / 4; 
   pt[2].y = 3 * nHeight / 4; 
   pt[3].x = nWidth / 2; 
   pt[3].y = nHeight / 2; 
   pt[4].x = 3 * nWidth / 4; 
   pt[4].y = nHeight / 4; 
   curve.nType = CURVE_STANDARD; 
   curve.nPointCount = sizeof(pt) / sizeof(pt[0]); 
   curve.pPoints = pt; 
   curve.uFillMode = L_POLY_WINDING; 
   curve.dTension = 0.5; 
   curve.nClose = CURVE_CLOSE; 
   curve.nReserved = 0; 
   nRet =Region.SetRgnCurve(&curve); 
   if(nRet !=SUCCESS) 
      return nRet; 
   nRet =Bitmap.Invert(); 
   if(nRet !=SUCCESS) 
      return nRet; 
   nRet =Region.Free(); 
   if(nRet !=SUCCESS) 
      return nRet; 
   return SUCCESS; 

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