More encapsulation and add new class Signal for handling custom events.

src/GUI/InfoBar.hpp

@@ -0,0 +1,17 @@
+#pragma once
+
+#include <wx/infobar.h>
+#include <wx/window.h>
+
+class cInfoBar : public wxInfoBar
+{
+    public:
+        cInfoBar(wxWindow* window);
+        ~cInfoBar();
+
+    public:
+        wxInfoBar* GetInfoBarObject() { return this; }
+
+    private:
+        wxWindow* m_pWindow;
+};