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2m��  ��:m VC FAQ(7)
2m����վ:m '3m�Ͻ�ɺ�m' (Wed Apr  8 08:15:20 1998) , 5mվ���ż�m

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------------------------------------------------------------ 
  How do I 'attach' a menu to a window's creation/destruction? 
----------------------------------------------------------- 
{Note the original question talked about dialogs, but you can interpolate 
this  
code to any kind of window that you want to have change the menu.} 

One of the ways to do this is as follows** 

1.  Declare a variable CMenu pNewMenu in one of the dialog class. 

2.  Handle the WM_INITDIALOG and WM_CLOSE messages in the 
dialog class as follows. 

BOOL CMydlg::OnInitDialog() 

{ 

        CDialog::OnInitDialog(); 

        // Load the IDR_MYFRAME menu 

        pNewMenu = new CMenu; 

        pNewMenu->LoadMenu(IDR_MYFRAME); 

        // Set the mainframe menu to mainframe. 

        ((CMainFrame *)AfxGetMainWnd())->SetMenu(pNewMenu); 

        return TRUE; 

} 

And 

void CMydlg::OnClose() 

{ 

        // Detach the previous HMenu handle from the object. 

        pNewMenu->Detach(); 

        pNewMenu->LoadMenu(IDR_MAINFRAME); 

        // Restore the mainframe menu. 

        ((CMainFrame *)AfxGetMainWnd())->SetMenu(pNewMenu); 

        CDialog::OnClose(); 

} 

4.   If there are other methods of closing the dialog (example- By clicking
a  
button in the Dialog), then The code given above in OnClose handler, must 
be  
put in the button click handler. 
  

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