LBitmap::SwapColors

#include "ltwrappr.h"

virtual L_INT LBitmap::SwapColors(nFlags = 0)

L_INT nFlags;

/* flag */

Swaps the specified color channels.

Parameter	Description
nFlags	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

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.

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.

See Also

Functions:	LBitmap::AdjustTint. LBitmap::ColorHalfTone, LBitmap::ConvertToColoredGray, LBitmap::BalanceColors, LBitmapBase::GrayScale, LBitmap::GrayScaleExt, LBitmapBase::IsGrayScale, Class Members
Topics:	Correcting Colors
	Raster Image Functions: Modifying Intensity Values
	Raster Image Functions: Correcting Colors

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);
}