Add zwidget

libraries/ZWidget/include/zwidget/widgets/mainwindow/mainwindow.h

@@ -0,0 +1,31 @@
+
+#pragma once
+
+#include "../../core/widget.h"
+
+class Menubar;
+class Toolbar;
+class Statusbar;
+
+class MainWindow : public Widget
+{
+public:
+	MainWindow();
+	~MainWindow();
+
+	Menubar* GetMenubar() const { return MenubarWidget; }
+	Toolbar* GetToolbar() const { return ToolbarWidget; }
+	Statusbar* GetStatusbar() const { return StatusbarWidget; }
+	Widget* GetCentralWidget() const { return CentralWidget; }
+
+	void SetCentralWidget(Widget* widget);
+
+protected:
+	void OnGeometryChanged() override;
+
+private:
+	Menubar* MenubarWidget = nullptr;
+	Toolbar* ToolbarWidget = nullptr;
+	Widget* CentralWidget = nullptr;
+	Statusbar* StatusbarWidget = nullptr;
+};