LDialogColor::DoModalContrast
#include "ltwrappr.h"
virtual L_INT LDialogColor::DoModalContrast(hWndOwner)
HWND hWndOwner; |
/* handle of the window which owns the dialog */ |
Displays the Contrast dialog box, and gets the options for LBitmap::ChangeContrast
Parameter |
Description |
hWndOwner |
Handle of the window which owns the dialog. |
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
LDialogColor::SetContrastParams must be called before using this function to set the initial values for the dialog. You can get the updated CONTRASTDLGPARAMS with the values entered by the user through the dialog by using LDialogColor::GetContrastParams.
Required DLLs and Libraries
LTDLGCLR 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: |
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Example
L_INT LDialogColor_DoModalContrastExample(LBitmap * pBitmap, HWND hWnd) { L_INT nRet; LDialogColor DlgColor; nRet = DlgColor.Initialize (DLG_INIT_COLOR ); if(nRet != SUCCESS) return nRet; DlgColor.SetBitmap(pBitmap); CONTRASTDLGPARAMS DlgParams; memset ( &DlgParams, 0, sizeof ( CONTRASTDLGPARAMS ) ) ; DlgParams.uStructSize = sizeof ( CONTRASTDLGPARAMS ) ; DlgColor.EnableCallBack (FALSE); DlgColor.EnablePreview(TRUE); DlgColor.EnableAutoProcess(TRUE); DlgColor.EnableToolbar(TRUE); nRet = DlgColor.SetContrastParams(&DlgParams) ; if(nRet != SUCCESS) return nRet; nRet = DlgColor.DoModalContrast(hWnd); if(nRet < 1) return nRet; // Gets the updated values for the structure nRet = DlgColor.GetContrastParams(&DlgParams, sizeof(DlgParams)) ; if(nRet != SUCCESS) return nRet; nRet = DlgColor.Free(); if(nRet != SUCCESS) return nRet; return nRet; }