Accelerator problem

Posted on 2003-03-19
Medium Priority
Last Modified: 2013-11-20
I have an SDI application with a DialogBar to the right. The DialogBar contains a PropertySheet with several PropertyPages. The View contains an image. My problem is that sometimes accelerators like Ctrl+Z does not work. Often this happens after changing page on the PropertySheet. If I then click in the image the accelerators works again. What should I do to solve this?
Question by:P1R
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Accepted Solution

SteveGTR earned 150 total points
ID: 8166778
You might try creating a class derived from CPropertySheet and instantiating it. Within the class override the PreTranslateMessage() function and manually process accelerator requests like so:

BOOL CMyPropSheet::PreTranslateMessage(MSG* pMsg)
  // Enable accelerator processing
  if (pMsg->message >= WM_KEYFIRST && pMsg->message <= WM_KEYLAST)
    HACCEL hAccel = ((CFrameWnd*) AfxGetApp()->GetMainWnd())->GetDefaultAccelerator();

    if (hAccel && ::TranslateAccelerator(m_hWnd, hAccel, pMsg))
      return TRUE;

  return CPropertySheet::PreTranslateMessage(pMsg);

Good Luck,

Author Comment

ID: 8167436
(I have already a class derived from CPropertySheet and I have overridden the PreTranslateMessage() function in order to call pToolTip->RelayEvent(pMsg);)

I tried to add the code for enabling accelerator processing as you suggested, but the result is still the same. I have also tried to add the code for enabling accelerator to the PreTranslateMessage() functions for each PropertyPage, and for the View, but still the same result. What to do next?

Author Comment

ID: 8172268
I have got it working now. I put the PreTranslateMessage function in the CMyPropertyPage class. Then I needed to set focus to the main window. The PreTranslateMessage function will be

BOOL CMyPropertyPage::PreTranslateMessage(MSG* pMsg)
     if (pMsg->message >= WM_KEYFIRST && pMsg->message <= WM_KEYLAST)
          CFrameWnd* mainWnd = (CFrameWnd*) AfxGetApp()->GetMainWnd();
          HACCEL hAccel = mainWnd->GetDefaultAccelerator();
          if(hAccel && ::TranslateAccelerator(m_hWnd, hAccel, pMsg))
               return TRUE;

     return CPropertyPage::PreTranslateMessage(pMsg);

Author Comment

ID: 8172286
I happened to post this question also in the WinProg section. There I got an answer from DanRollins and I think it is fair to accept both as answers. Thanks!

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