#include "ltwrappr.h"

virtual L_INT LBitmap::SwapColors(uFlags = 0)

Swaps the specified color channels.


L_UINT32 uFlags

Flag that indicates which color channels to swap. Possible values are:

Value Meaning
SWAP_RG Swap the red and green channels. (Change red to green and green to red.)
SWAP_RB Swap the red and blue channels. (Change red to blue and blue to red.)
SWAP_GB Swap the green and blue channels. (Change green to blue and blue to green.)
SWAP_RGBR Change red to green, green to blue and blue to red.
SWAP_RBGR Change red to blue, blue to green and green to red.


Value Meaning
SUCCESS The function was successful.
< 1 An error occurred. Refer to Return Codes.


This function changes the data of the class object's bitmap.

This function can process the whole image or a region of the image.

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 supports signed data images.

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


Win32, x64.

See Also




L_INT LBitmap__SwapColorsExample(LBitmap & Bitmap, L_TCHAR * szFileName) 
   L_INT nRet; 
   nRet =Bitmap.Load(szFileName); 
   if(nRet !=SUCCESS) 
      return nRet; 
   return Bitmap.SwapColors(SWAP_RB); 
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