Code re-factor / cleanup

GL Window now ready to draw signal lines

src/AppFrame.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include "wx/frame.h"
+#include "PrimaryGLContext.h"
+
+// Define a new frame type
+class AppFrame : public wxFrame
+{
+public:
+    AppFrame();
+
+private:
+    void OnClose(wxCommandEvent& event);
+    void OnNewWindow(wxCommandEvent& event);
+
+    wxDECLARE_EVENT_TABLE();
+};