L_LTDLG_API L_INT L_DlgGammaAdjustment(hWndOwner, pDlgParams)
Displays the Gamma Adjustment dialog box and gets the options for the gamma correction functions.
Handle of the window which owns the dialog.
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.
|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.|
The Gamma Adjustment dialog.
Required DLLs and Libraries
L_INT ShowDlgGammaAdjustmentExample(HWND hWnd,pBITMAPHANDLE pBitmap)
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 |
nRet = L_DlgInit ( DLG_INIT_COLOR ) ;
if(nRet != SUCCESS && nRet != ERROR_DLG_ALREADYINITIATED)
nRet = L_DlgGammaAdjustment ( hWnd, &DlgParams ) ;
if(nRet < 1)
nRet = L_DlgFree () ;
if(nRet != SUCCESS)