Add some initial widget functionality (prefs partly working)

PortabilityLayer/IconLoader.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <stdint.h>
+
+template<class T>
+class THandle;
+
+namespace PortabilityLayer
+{
+	class PixMapImpl;
+	class SimpleImage;
+
+	class IconLoader
+	{
+	public:
+		virtual bool LoadColorIcon(const int16_t id, THandle<PixMapImpl> &outColorImage, THandle<PixMapImpl> &outBWImage, THandle<PixMapImpl> &outMaskImage) = 0;
+		virtual THandle<PixMapImpl> LoadBWIcon(const int16_t id) = 0;
+
+		static IconLoader *GetInstance();
+	};
+}