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LDialogImageEffect::DoModalUnderlay

Summary

Displays the Underlay dialog box, and gets the options for LBitmapBase::Underlay.

Syntax

#include "ltwrappr.h"

virtual L_INT LDialogImageEffect::DoModalUnderlay(hWndOwner)

Parameters

HWND hWndOwner

Handle of the window which owns the dialog.

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

LDialogImageEffect::SetUnderlayParams must be called before using this function to set the initial values for the dialog. You can get the updated UNDERLAYDLGPARAMS with the values entered by the user through the dialog by using LDialogImageEffect::GetUnderlayParams.

The Underlay dialog.

Required DLLs and Libraries

LTDLGIMGEFX
LTDLGKRN
LTDLGUTL
LTDLGCTRL
LTDLGCOM
LTDIS
LTIMGUTL
LTIMGEFX
For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application

Example

L_INT LDialogImageEffect_DoModalUnderlayExample(LBitmap * pBitmap, HWND hWnd) 
{ 
   L_INT nRet; 
 
   LDialogImageEffect DlgImageEffect; 
 
   nRet = LDialogImageEffect::Initialize(DLG_INIT_COLOR ); 
   if(nRet != SUCCESS) 
      return nRet; 
 
   DlgImageEffect.SetBitmap(pBitmap); 
 
   UNDERLAYDLGPARAMS DlgParams;  
   DLGBITMAPLISTITEM Items [ 1 ]; 
   DLGBITMAPLIST     BitmapList; 
   LBitmap TmpBitmap; 
 
   memset ( &DlgParams, 0, sizeof ( UNDERLAYDLGPARAMS ) ); 
 
   DlgParams. uStructSize = sizeof ( UNDERLAYDLGPARAMS ); 
 
   Items [ 0 ].pszFileName  = ( L_TCHAR * ) malloc ( sizeof ( L_TCHAR ) * L_MAXPATH ); 
 
   lstrcpy ( Items [ 0 ].pszFileName, MAKE_IMAGE_PATH(TEXT("ULAY1.BMP") ) ); 
 
   nRet = TmpBitmap.LoadResize (Items [ 0 ].pszFileName, 
                        100, 
                        0, 
                        24, 
                        0, 
                        ORDER_BGR, 
                        NULL, 
                        NULL ); 
   if(nRet != SUCCESS) 
      return nRet; 
 
   Items [ 0 ].pBitmap = TmpBitmap.GetHandle (); 
 
   BitmapList.uStructSize  = sizeof ( DLGBITMAPLIST ); 
   BitmapList.pBitmapList = Items; 
   BitmapList.nCount      = 1; 
 
   DlgParams.uUnderlayFlags       = UB_TILE; 
   DlgParams.nUnderlayBitmapIndex = 0; 
   DlgParams.pBitmapList          = &BitmapList; 
 
   DlgImageEffect.EnableCallBack (FALSE); 
   DlgImageEffect.EnablePreview(TRUE); 
   DlgImageEffect.EnableAutoProcess(TRUE); 
   DlgImageEffect.EnableToolbar(TRUE); 
 
   nRet = DlgImageEffect.SetUnderlayParams(&DlgParams); 
   if(nRet != SUCCESS) 
      return nRet; 
 
   nRet = DlgImageEffect.DoModalUnderlay(hWnd);  
   if(nRet < 1) 
      return nRet; 
 
   // Gets the updated values for the structure 
 
   nRet = DlgImageEffect.GetUnderlayParams(&DlgParams, sizeof(DlgParams)); 
   if(nRet != SUCCESS) 
      return nRet; 
 
   nRet = LDialogImageEffect::Free(); 
   if(nRet != SUCCESS) 
      return nRet; 
 
   nRet = TmpBitmap.Free(); 
   if(nRet != SUCCESS) 
      return nRet; 
 
   free ( Items [ 0 ].pszFileName ); 
 
   return SUCCESS; 
}