Color Conversion to an Image (Delphi 4.0)

The Color Conversion C API provides color conversion to an image. To do a conversion, follow the steps below:

1. At the beginning of the Unit1 file, add LTDLLUNT, LTDLLTYP, and LTDLLDEF to the uses section.

2. Use the following code to direct color conversion to an image:

   function TForm1.LABToLEADBitmap({in}pSrcLAB: Pointer; {out}var pBitmap: BITMAPHANDLE; {in}nWidth, {in}nHeight: Integer) : {ret}Integer; 
   var 
   ret : Integer; (* return value *) 
   begin 
   (* 
   ****************************************************************** 
   * Simple conversion from CIELab to RGB24 LEAD bitmap             * 
   * Parameters :                                                   * 
   * pSrcLAB : 24 bit CIELab data, this is the input image data     * 
   * pBitmap : Handle to the resulting LEAD bitmap                  * 
   * nWidth  : Width of the image                                   * 
   * nHeight : Height of the image                                  * 
   * Returns SUCCESS when successful or an error code otherwise     * 
   ****************************************************************** 
   *) 
   ret := L_ClrConvertDirectToBitmap(CCS_LAB, 
   CCS_RGB, 
   pSrcLAB, 
   @pBitmap, 
   SizeOf(BITMAPHANDLE), 
   nWidth, 
   nHeight, 
   0, 
   0); 
   Result := ret; 
   end; 

See Also

Introduction

Bitmap Conversion Options

Color Conversion C API Function Groups

Getting Started