Using ON_UPDATE_COMMAND_UI in Property Pages


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Using ON_UPDATE_COMMAND_UI message maps in property pages is the same as in dialogs except for one extra step required.
You need to derive a class from CPropertySheet and intercept the WM_KICKIDLE messages.

1. Use class wizard to create a new class called CMyPropSheet with a base class of CPropertSheet.
2. In the header add the message function. afx_msg LRESULT OnIdleUpdateCmdUI(WPARAM, LPARAM);
3. In the source file #include afxpriv.h
4. Add the message map ON_MESSAGE(WM_KICKIDLE, OnKickIdle)
5. Implement the function.

	SendMessageToDescendants(WM_WM_KICKIDLE, 0, 0, FALSE, FALSE);
	return 0;

The property sheet now passes all WM_KICKIDLE message to its property pages.

In the property page class, just add a message map for WM_KICKIDLE and call UpdateDialogControls.

	UpdateDialogControls(this, FALSE);
	return 0L;

Then all you need is ON_UPDATE_COMMAND_UI message maps.

P.S. This does not work for modeless property sheets. You need to trap the WM_IDLEUPDATECMDUI message in the property sheet's owner window and send it WK_KICKIDLE messages.

Date Posted: 08/13/98


  • Perfect! I looked far and wide for this.

    Posted by Legacy on 02/01/2002 12:00am

    Originally posted by: Zhiyong He

    Thanks very much.

  • Thanks Tim!

    Posted by Legacy on 03/18/2001 12:00am

    Originally posted by: Artem


  • great! but why ContinueModal doesn't work?

    Posted by Legacy on 12/24/1999 12:00am

    Originally posted by: Xiang

    Just what i want! but why overriding ContinueModal() doesn't work? which works well in dlg based app. OnkickIdle works too there. I think the key is sending msg to propertypage

  • A small change

    Posted by Legacy on 08/01/1999 12:00am

    Originally posted by: Jonathan Schafer

    I too have used this method.  However, instead of use SendMessageToDescendents, I use 

    CPropertyPage* pActivePage=GetActivePage();
    if (NULL==pActivePage)
    return lParam <= 2;

    return pActivePage->SendMessage(WM_KICKIDLE, wParam, lParam);

    This way, I only send the message to the active page, as it is the only one I'm interested in updating.

  • Great!

    Posted by Legacy on 07/09/1999 12:00am

    Originally posted by: Ernie Cooper

    This was exactly what I was looking for. I have the "MFC Answer Book" which describes how to do it for dialogs but not for property sheets.

    Your post gets me what I need, thanks.

    Ernie Cooper

  • Fantastic! Just what I was looking for.

    Posted by Legacy on 05/07/1999 12:00am

    Originally posted by: Whitney Kew

    Title says it all - this code was exactly what I was looking for. Good job, and thanks!

  • Few typos

    Posted by Legacy on 03/22/1999 12:00am

    Originally posted by: Tim Lewis

    I think it should be OnKickIdle instead of OnIdleUpdateCommandUI. Also, should be WM_KICKIDLE instead of WM_WM_KICKIDLE.

    Picky, I know, but...

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