LBitmapBase::HasRgn
#include "ltwrappr.h"
virtual L_BOOL LBitmapBase::HasRgn()
Determines whether the bitmap has a region.
Returns
TRUE |
The specified bitmap has a region. |
FALSE |
The specified bitmap does not have a region. |
Comments
When a bitmap has a region, the LEADTOOLS functions that modify the pixel values (for example LBitmap::Posterize) act on the region, rather than the whole bitmap. In addition, the LEADTOOLS functions that flip, reverse, rotate, shear, or resize a bitmap also transform the region to match the bitmap. For example, if you were to shear the bitmap that had a rectangular region, the region would become a parallelogram.
To remove a bitmap region, use the LBitmapRgn::Free function.
Required DLLs and Libraries
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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Example
L_INT LBitmapBase__HasRgnExample() { L_INT nRet; LBitmapBase MyBitmap; MyBitmap.SetFileName(TEXT("C:\\Program Files\\LEAD Technologies, Inc\\LEADTOOLS 15.0\\Images\\image1.cmp")); nRet =MyBitmap.Load(24); if(nRet !=SUCCESS) return nRet; /*……create a region for the bitmap…..*/ /*……….*/ if(MyBitmap.HasRgn()) nRet = MyBitmap.Free(); return nRet; }