How To Disable the MMC Help File From Displaying by Clicking F1 (241624)

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The MMC architecture sends a MMCN_CONTEXTHELP notification to the Component::Notify() handler when F1 is selected, or the Help menu item is clicked for the Snap-in. Typically, most developers would like to have the normal help behavior that MMC provides. By default, MMC will bring up the MMC help file in a separate window if a WinHelp Help file is loading using the WinHelp API. If you use IDisplayHelp::ShowTopic() to display an HTMLHelp help file, MMC will merge the help file with the default MMC Help. There are times when you do not want the default MMC help to be displayed.

In the Component::Notify() handler code segment that processes the MMCN_CONTEXTHELP notification, simply return an S_OK as the HRESULT. Returning an S_OK will cause MMC not to load the default MMC help file.

The following is an example of a Component::Notify() handler that demonstrates how to do this:

  STDMETHODIMP CComponent::Notify
  {
    LPDATAOBJECT     ipDataObject, 
    MMC_NOTIFY_TYPE  MmcEvent,
    LONG             nArg,         
    LONG             nParam        
  }
  {
    HRESULT hr = S_OK;
    switch( MmcEvent )

    {
      case MMCN_CONTEXTHELP:
          hr = S_OK;
          // hr = S_FALSE MMC Help will be displayed.  
          // hr = S_OK then MMC help will not be displayed.
          break;
    }

    return hr;
  } //end Notify()