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Self-centering WTL property sheet

, 3 Nov 2002
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A small class to automatically center a WTL property sheet.


This is a very simple class that will automatically center a WTL property sheet. One frequently-asked question in the various WTL forums is "How do I centre a CPropertySheet object?". Most people tend to add a GetParent().CenterWindow() call to the first page in the property sheet, but in my mind this is a little awkward.

Instead, simply #include "propertysheetex.h" and use CPropertySheetEx as a drop in replacement for the standard WTL CPropertySheet class.


The actual code for the class is straightforward:

class CPropertySheetEx : public CPropertySheet
    bool m_bCentered;
    CPropertySheetEx(WTL::_U_STRINGorID title = 
          (LPCTSTR)NULL, UINT uStartPage = 0, HWND hWndParent = NULL)
        : CPropertySheet(title, uStartPage, hWndParent), m_bCentered(false)

    LRESULT OnShowWindow(UINT /*uMsg*/, WPARAM wParam, 
          LPARAM /*lParam*/, BOOL& bHandled)
        // Centre?
        if (wParam == TRUE)
        // Ensure base-class gets this message
        bHandled = FALSE;
        return 0;

    void Center(void)
        // Only do this once
        if (!m_bCentered)
            m_bCentered = true;


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GeneralThanks Pinmemberyunfei22-Aug-05 5:17 

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