L_DlgGammaAdjustment

#include "l_bitmap.h"

L_LTDLG_API L_INT L_DlgGammaAdjustment(hWndOwner, pDlgParams)

Displays the Gamma Adjustment dialog box and gets the options for the gamma correction functions.

Parameters

L_HWND hWndOwner

Handle of the window which owns the dialog.

LPGAMMAADJUSTMENTDLGPARAMS pDlgParams

Pointer to a GAMMAADJUSTMENTDLGPARAMS 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

Value Meaning
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 Gamma Adjustment dialog.

Required DLLs and Libraries

See Also

Functions

Topics

Example

L_INT ShowDlgGammaAdjustmentExample(HWND            hWnd,pBITMAPHANDLE   pBitmap) 
{ 
   L_INT nRet; 
   GAMMAADJUSTMENTDLGPARAMS DlgParams ; 
 
   memset ( &DlgParams, 0, sizeof ( GAMMAADJUSTMENTDLGPARAMS ) ) ; 
 
   DlgParams.uStructSize = sizeof ( GAMMAADJUSTMENTDLGPARAMS ) ; 
   DlgParams.pBitmap     = pBitmap ; 
   DlgParams.nRedValue   = 50 ; 
   DlgParams.nGreenValue = 50 ; 
   DlgParams.nBlueValue  = 50 ; 
   DlgParams.uDlgFlags   = DLG_GAMMAADJUSTMENT_SHOW_PREVIEW       | 
                           DLG_GAMMAADJUSTMENT_SHOW_TOOL_ZOOMLEVEL; 
 
   nRet = L_DlgInit ( DLG_INIT_COLOR ) ; 
   if(nRet != SUCCESS && nRet != ERROR_DLG_ALREADYINITIATED) 
      return nRet; 
   nRet = L_DlgGammaAdjustment ( hWnd, &DlgParams ) ; 
   if(nRet < 1) 
      return nRet; 
   nRet = L_DlgFree () ; 
   if(nRet != SUCCESS) 
      return nRet; 
   return SUCCESS; 
} ; 
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