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LBitmap::SwapColors

Summary

Swaps the specified color channels.

Syntax

#include "ltwrappr.h"

virtual L_INT LBitmap::SwapColors(uFlags = 0)

Parameters

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.

Returns

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

Comments

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.

Swap Colors Function - Before

Swap Colors Function - After

View additional platform support for this Swap Colors function.

Required DLLs and Libraries

LTDIS
LTFIL
LTIMGCLR
For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64.

Example

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); 
}