work on layers

modules/examples/GuiModules/TestImgui/src/TestImgui.h

@@ -23,6 +23,27 @@ class TestImgui : public Archimedes::GuiModule {
         std::list<Archimedes::Renderer::renderCmd*>::iterator rcmd;
 
         Archimedes::Window* window;
+
+        class TILayer : public Archimedes::Layer {
+            public:
+
+                TILayer(TestImgui* _ti) : ti(_ti) {}
+
+                ~TILayer();
+
+                void onRender();
+
+                void onAttach();
+
+                void onDetach();
+
+                bool onEvent(const Archimedes::Event&);
+
+            private:
+
+                TestImgui* ti;
+
+        } layer = TILayer(this);
 };
 
 #ifdef TESTIMGUI_DYNAMIC