L_DlgGrayScale

#include "l_bitmap.h"

L_LTDLG_API L_INT L_DlgGrayScale (hWndOwner, pDlgParams)

L_HWND hWndOwner;

owner of dialog

LPGRAYSCALEDLGPARAMS pDlgParams;

pointer to a structure

Displays the Gray Scale dialog box, and gets the options for L_GrayScaleBitmapExt.

Parameter

Description

hWndOwner

Handle of the window which owns the dialog.

pDlgParams

Pointer to a GRAYSCALEDLGPARAMS structure to be updated with the values entered by the user, through the dialog. Set members of this structure, before calling this function, to set the dialogs initial values.

Returns

SUCCESS_DLG_OK

The "OK" button was pressed, and the dialog exited successfully.

SUCCESS_DLG_CANCEL

The "Cancel" button was pressed, and the dialog exited successfully.

< 1

An error occurred. Refer to Return Codes.

Comments

The Gray Scale dialog.

Required DLLs and Libraries

LTDLGCLR
LTDLGKRN
LTDLGUTL
LTDLGCTRL
LTDLGCOM
LTDIS
LTIMGUTL
LTIMGCLR
LTKRN

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:

L_DlgInit, L_GrayScaleBitmapExt

Topics:

Dialogs: Color Manipulation

 

Using Imaging Common Dialog

Example

L_INT ShowDlgGrayScaleExample(HWND            hWnd,pBITMAPHANDLE   pBitmap) 
{ 
   L_INT nRet; 
   GRAYSCALEDLGPARAMS DlgParams ; 
   memset ( &DlgParams, 0, sizeof ( GRAYSCALEDLGPARAMS ) ) ; 
   DlgParams.uStructSize  = sizeof ( GRAYSCALEDLGPARAMS ) ; 
   DlgParams.pBitmap      = pBitmap ; 
   DlgParams.nRedFactor   = 400 ; 
   DlgParams.nGreenFactor = 300 ; 
   DlgParams.nBlueFactor  = 300 ; 
   DlgParams.uDlgFlags    = DLG_GRAYSCALE_SHOW_PREVIEW        | 
   DLG_GRAYSCALE_SHOW_TOOL_ZOOMLEVEL ; 
   nRet = L_DlgInit ( DLG_INIT_COLOR ) ; 
   if(nRet != SUCCESS && nRet != ERROR_DLG_ALREADYINITIATED) 
      return nRet; 
   nRet = L_DlgGrayScale ( hWnd, &DlgParams ) ; 
   if(nRet < 1) 
      return nRet; 
   nRet = L_DlgFree () ; 
   if(nRet != SUCCESS) 
      return nRet; 
   return SUCCESS; 
} ;

Help Version 19.0.2017.10.27
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