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LBitmap::ChannelMix

Summary

Redistributes the RGB values of the specified bitmap, using the values stored in the specified structures.

Syntax

#include "ltwrappr.h"

virtual L_INT LBitmap::ChannelMix(pRedFactor, pGreenFactor, pBlueFactor, uFlags = 0)

Parameters

pCOLORDATA pRedFactor

Pointer to a COLORDATA structure that contains the values to use for redistributing the bitmap's red values.

pCOLORDATA pGreenFactor

Pointer to a COLORDATA structure that contains the values to use for redistributing the bitmap's green values.

pCOLORDATA pBlueFactor

Pointer to a COLORDATA structure that contains the values to use for redistributing the bitmap's blue values.

L_UINT32 uFlags

Reserved for future use. Must be 0.

Returns

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

Comments

This function is used to rebalance the colors in a bitmap. It can be used to make color adjustments and corrections.

This function supports 1-, 2-, 3-, 4-, 5-, 6-, 7-, 8-, 24- and 48-bit bitmaps and can support regions for 24- and 48-bit bitmaps. If the bitmap has a region, the effect will be applied on the region only.

This function does not support signed data images. It returns the error code ERROR_SIGNED_DATA_NOT_SUPPORTED if a signed data image is passed to this function.

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.

Channel Mixer Function - Before

Channel Mixer Function - After

View additional platform support for this Channel Mixer function.

Required DLLs and Libraries

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

The following example applies the LBitmap::ChannelMix function to it:

L_INT LBitmap__ChannelMixExample(LAnimationWindow *BitmapWindow)  
{ 
 
  COLORDATA RedFact, GreenFact, BlueFact;  
  RedFact.uStructSize = sizeof(COLORDATA);  
  GreenFact.uStructSize = sizeof(COLORDATA);  
  BlueFact.uStructSize = sizeof(COLORDATA);  
  RedFact.nRedFactor = 250;  
  RedFact.nGreenFactor = 255;  
  RedFact.nBlueFactor = 222;  
  RedFact.nConstant = 0;  
  GreenFact.nRedFactor = 100;  
  GreenFact.nGreenFactor = 0;  
  GreenFact.nBlueFactor = 250;  
  GreenFact.nConstant = 0;  
  BlueFact.nRedFactor = 5;  
  BlueFact.nGreenFactor = 0;  
  BlueFact.nBlueFactor = 0;  
  BlueFact.nConstant = 0;  
    
  return BitmapWindow->ChannelMix( &RedFact, &GreenFact, &BlueFact);  
}