LBitmapRgn::SetRgnCurve
#include "ltwrappr.h"
virtual L_INT LBitmapRgn::SetRgnCurve(pCurve)
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pCURVE pCurve; |
/* pointer to a structure */ |
Creates or updates the region of the class object's associated bitmap by adding a curved region.
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Parameter |
Description |
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pCurve |
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. |
Returns
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SUCCESS |
The function was successful. |
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< 1 |
An error occurred. Refer to Return Codes. |
Comments
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
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LTDIS 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
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Functions: |
LBitmapRgn::CurveToBezier, LBitmapRgn::SetRgnColorHSVRange, LBitmapRgn::SetRgnColorRGBRange, Class Members |
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Topics: |
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Example
L_VOID InvertCurvedRegion(LBitmap & Bitmap)
{
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.uStructSize=sizeof(CURVE);
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;
Region.SetBitmap(&Bitmap);
Region.SetRgnCurve(&curve);
Bitmap.Invert();
Region.Free();
}