PropertySheet Full Screen

Question

I'm porting an application from windows Pocket PC2003 to Windows Mobile 6.5. On startup my application shows a PropertySheet with two Pages which I want to show in full screen mode.

The problem is this:

What ever I do the Taskbar and the menubar will never disapear. Windows Button, SIP-Button and all other Buttons stay in foreground.

I tried this:

    CPropertySheet::OnInitDialog();

    // Call SHInitDialog with flags for full screen.
    SHINITDLGINFO shidi;

    shidi.dwMask = SHIDIM_FLAGS;
    shidi.dwFlags = SHIDIF_FULLSCREENNOMENUBAR;
    shidi.hDlg = m_hWnd;

    ::SHInitDialog(&shidi);

    // SHFullScreen fails if dialog box is not foreground.
    SetForegroundWindow();  
    SHFullScreen(m_hWnd, SHFS_HIDESIPBUTTON | SHFS_HIDETASKBAR | SHFS_HIDESTARTICON);

and in normal dialogs it will work with m_bFullScreen = FALSE; on top but m_bFullScreen is not available for CPropertySheet.

Has anyone any solution for this problem?