Using Accelerators with an MFC Modeless Dialog Box

• The Microsoft Foundation Classes (MFC), included with:
  • Microsoft Visual C++ for Windows, 16-bit edition, versions 1.0, 1.5, 1.51, 1.52
  • Microsoft Visual C++, 32-bit Editions, versions 1.0, 2.0, 2.1, 4.0

SUMMARY

To use accelerators with a modeless dialog box, override the PreTranslateMessage()function in your derived CDialog class.

MORE INFORMATION

To use accelerators with your modeless dialog box, perform the following steps:

1. Create a modeless dialog box. For additional information, please see the following article in the Microsoft Knowledge Base:

   Q103788 Creating a Modeless Dialog Box with MFC Libraries




2. Insert this sample code into the files listed above the code:

   
      // .h file with your derived CDialog class.
      class CModeless : public CDialog
      {
         .
       public:
         virtual BOOL PreTranslateMessage(MSG*);
         .
      };
   
      //.cpp file.
      BOOL CModeless::PreTranslateMessage(MSG* pMsg)
      {
         HACCEL hAccel =
         ((CMainFrame*)AfxGetApp()->m_pMainWnd)->GetAccelTable();
         if(!(hAccel &&
              ::TranslateAccelerator(AfxGetApp()->m_pMainWnd->m_hWnd, hAccel,
                                     pMsg)))
              return CDialog::PreTranslateMessage(pMsg);
         else
            return TRUE;
      }
   
      // Mainfrm.h file, where CMainFrame is the main window class.
      HACCEL CMainFrame::GetAccelTable() { return m_hAccelTable; } 




3. Create the accelerators with App Studio, or with Resource View from the Project Workspace in Visual C++ 32-bit Edition, version 4.0. The accelerators should be in the IDR_MAINFRAME accelerator table. They should also have the same ID as the controls or menu items with which they are associated.

Additional query words: kbinf 1.00 1.50 1.51 1.52 2.00 2.10 2.50 2.51 2.52 3.00 3.10 4.00

Keywords          : kbMFC KbUIDesign kbVC 
Version           : WINDOWS:1.00,1.50,1.51,1.52; winnt:1.00,2.00
Platform          : WINDOWS winnt 
Issue type        : kbinfo 

Last Reviewed: August 3, 1999