Add virtual hook

Sine Striker

2023-12-11 8c403d5dd03418febd67d50c6d9094a61c036f9b

 examples/mainwindow/mainwindow.cpp

@@ -77,10 +77,10 @@
    windowBar->setHostWidget(this);

    agent->setTitleBar(windowBar);
    agent->setSystemButton(QWK::CoreWindowAgent::WindowIcon, iconButton);
    agent->setSystemButton(QWK::CoreWindowAgent::Minimize, minButton);
    agent->setSystemButton(QWK::CoreWindowAgent::Maximize, maxButton);
    agent->setSystemButton(QWK::CoreWindowAgent::Close, closeButton);
    agent->setSystemButton(QWK::WindowAgentBase::WindowIcon, iconButton);
    agent->setSystemButton(QWK::WindowAgentBase::Minimize, minButton);
    agent->setSystemButton(QWK::WindowAgentBase::Maximize, maxButton);
    agent->setSystemButton(QWK::WindowAgentBase::Close, closeButton);
    agent->setHitTestVisible(menuBar, true);

    connect(windowBar, &QWK::WindowBar::minimizeRequested, this, &QWidget::showMinimized);