void TopLevelWindow::setWindowActive (const bool isNowActive)
{
    if (windowIsActive_ != isNowActive)
    {
        windowIsActive_ = isNowActive;
        activeWindowStatusChanged();
    }
}
void DocumentWindow::lookAndFeelChanged()
{
    int i;
    for (i = numElementsInArray (titleBarButtons); --i >= 0;)
        titleBarButtons[i] = 0;

    if (! isUsingNativeTitleBar())
    {
        titleBarButtons[0] = ((requiredButtons & minimiseButton) != 0)
                                ? getLookAndFeel().createDocumentWindowButton (minimiseButton) : 0;

        titleBarButtons[1] = ((requiredButtons & maximiseButton) != 0)
                                ? getLookAndFeel().createDocumentWindowButton (maximiseButton) : 0;

        titleBarButtons[2] = ((requiredButtons & closeButton) != 0)
                                ? getLookAndFeel().createDocumentWindowButton (closeButton) : 0;

        for (i = 0; i < 3; ++i)
        {
            if (titleBarButtons[i] != 0)
            {
                buttonListener.owner = this;
                titleBarButtons[i]->addButtonListener (&buttonListener);
                titleBarButtons[i]->setWantsKeyboardFocus (false);

                // (call the Component method directly to avoid the assertion in ResizableWindow)
                Component::addAndMakeVisible (titleBarButtons[i]);
            }
        }

        if (getCloseButton() != 0)
        {
#if JUCE_MAC
            getCloseButton()->addShortcut (KeyPress (T('w'), ModifierKeys::commandModifier, 0));
#else
            getCloseButton()->addShortcut (KeyPress (KeyPress::F4Key, ModifierKeys::altModifier, 0));
#endif
        }
    }

    activeWindowStatusChanged();

    ResizableWindow::lookAndFeelChanged();
}