LColor::ClrDlg

#include "ltwrappr.h"

L_INT LColor::ClrDlg(nDlg, hWnd, pParams);

Displays a color space dialog box to initialize color conversion class object and the CONVERSION_PARAMS structure.

Parameters

L_INT nDlg

The color space dialog to display. Possible values are:

Value Meaning
DLG_CMYK CMYK dialog.
DLG_LAB LAB dialog.

HANDLE hWnd

Handle to parent window.

LPCONVERSION_PARAMS pParams

Pointer to a CONVERSION_PARAMS structure to be updated by the dialog. Pass NULL if it is not needed.

Returns

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

Comments

This is another way of initializing the toolkit without using LColor::Initialize. You can use it to initialize a color conversion class object and/or the CONVERSION_PARAMS structure, for use later in initialization or modification by LColor::SetConversionParams.

Required DLLs and Libraries

See Also

Functions

Topics

Example

This example opens the CMYK dialog and creates a color handle and CONVERSION_PARAMS data.

L_INT LColor_ClrDlgExample(HWND hWnd) 
{ 
   L_INT nRet; 
   LColor lClr; 
 
   CONVERSION_PARAMS convparams; /* conversion options */ 
 
   /* Conversion with options: 
      The conversion will be done with the options specified in the convparams variable*/ 
   /* set the convparams size */ 
   convparams.uStructSize = sizeof(CONVERSION_PARAMS); 
    
   /* we want to use the built in ICC conversion method and built in conversion */ 
   /* use built in conversion and LEAD ICC Engine*/ 
   convparams.nMethod = USE_BUILTIN | USE_ICC; 
    
   /* set the active conversion method */ 
   convparams.nActiveMethod = USE_BUILTIN; 
    
   /* allocate a D50 white point option */ 
   convparams.pWpoint = (LPWHITEPOINT)malloc(sizeof(WHITEPOINT)); 
    
   /* D50 white point */ 
   convparams.pWpoint->nWhitePoint = CIELAB_D50; 
    
   /* allocate a cmyk option */ 
   convparams.pCmykParams = (LPCMYK_PARAMS)malloc(sizeof(CMYK_PARAMS)); 
   convparams.pCmykParams->uStructSize = sizeof(CMYK_PARAMS); 
   convparams.pCmykParams->nMask = CMYK_GCR; 
    
   /* 17.5 % GCR value */ 
   convparams.pCmykParams->nGcr_level = 175; 
 
   nRet = lClr.ClrDlg(DLG_CMYK, hWnd, &convparams);  
 
   return nRet; 
} 

Help Version 21.0.2020.8.24
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2021 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Color Conversion C++ Class Library Help