#include "l_bitmap.h"

L_LTDIS_API L_BOOL L_BitmapHasRgn(pBitmap)

Determines whether the bitmap has a region.



Pointer to the bitmap handle referencing the bitmap to test.


Value Meaning
TRUE The specified bitmap has a region.
FALSE The specified bitmap does not have a region.


When a bitmap has a region, the LEADTOOLS functions that modify the pixel values (for example L_PosterizeBitmap) 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 L_FreeBitmapRgn function.

Required DLLs and Libraries


Win32, x64, Linux.

Help Version 21.0.2021.4.7
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