Add a C++ version of the Virtual Keyboard example

examples/virtual_keyboard/cpp/main.cpp

@@ -0,0 +1,17 @@
+// Copyright © SixtyFPS GmbH <info@slint-ui.com>
+// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-commercial
+
+#include "main_window.h"
+
+void init_virtual_keyboard(slint::ComponentHandle<MainWindow> app)
+{
+    app->global<VirtualKeyboardHandler>().on_key_pressed(
+            [=](auto key) { app->window().dispatch_key_press_event(key); });
+}
+
+int main()
+{
+    auto main_window = MainWindow::create();
+    init_virtual_keyboard(main_window);
+    main_window->run();
+}