Custom menu on iOS

For a Mac/Windows app that I'm testing on iOS i'm trying to replace the standard Juce menu with something more iOS-like. The code to do this is:

class testMenu : public Component

{

    void paint ( Graphics &g )

    {

        g.setColour(Colours::crimson);

        g.fillAll();

    }

};





MainAppWindow::MainAppWindow()

    : DocumentWindow (JUCEApplication::getInstance()->getApplicationName(),

                      Colours::lightgrey,

                      DocumentWindow::allButtons)

                    

{

    // set the look and feel

    appLookAndFeel = new LookAndFeel_V3;

    LookAndFeel::setDefaultLookAndFeel(appLookAndFeel);

    setVisible (true);

    setFullScreen (true);

    setTitleBarButtonsRequired ( 0, 0 );

    setTitleBarHeight(0); 

    setUsingNativeTitleBar (true);

    testMenu *test = new testMenu;

    setMenuBarComponent(test);

    setMenuBar ( 0, 60 );

    setMenuBarComponent(test);

#endif

    // Display the main content window

    setContentOwned (&MainContentWindow, false);

    MainContentWindow.Display();

}

I'm getting the crimson bar at the top of the page, as expected, but above that there is a black bar where the Juce menu used to be. I can't get rid of the black bar and I can't alter the height my own menu, other than from within the menu class itself. ( BTW - the reason I call setMenuBar twice is because it ignores the call if the current menu (null) is equal to the new menu (also null). This is probably an indicator that I don't really know what I'm doing).  Any thoughts?