LBitmap::Invert

#include "ltwrappr.h"

virtual L_INT LBitmap::Invert()

Inverts the colors in the class object's bitmap, making it like a photographic negative.

Returns

Comments

This function can also be used to invert the color of a 1-bit image, making the black white and the white black.

This function originally works on the image source data, but if the image has a LUT, the function will work on the LUT.

To use this function with source data for an image that has LUT:

myBitmap.EnableUseLUT(FALSE);
myBitmap.Invert();
myBitmap.EnableUseLUT(TRUE);
 

To update a status bar or detect a user interrupt during execution of this function, refer to LBase::EnableStatusCallback.

This function supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.

This function does not support 32-bit grayscale images. It returns the error code ERROR_GRAY32_UNSUPPORTED if a 32-bit grayscale image is passed to this function.

Required DLLs and Libraries

See Also

Example

L_INT LBitmap__InvertExample()
{
   L_INT nRet;
   LBitmap LeadBitmap;
   nRet =LeadBitmap.Load(TEXT("C:\\Program Files\\LEAD Technologies, Inc\\LEADTOOLS 15.0\\Images\\image1.cmp"), 0,ORDER_BGR);
   if(nRet !=SUCCESS)
      return nRet;
   nRet =LeadBitmap.Invert();
   if(nRet !=SUCCESS)
      return nRet;
   return SUCCESS;
}