Let us start here, from square one. No, from Zero!

touch/win7.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <vector>
+#include <windows.h>
+
+#include "handler.h"
+
+class Win7Handler : public TouchHandler {
+public:
+
+    Win7Handler();
+
+    static bool is_available();
+
+    virtual bool window_register(HWND hWnd) override;
+    virtual bool window_unregister(HWND hWnd) override;
+    virtual void handle_message(msg_handler_result &result, HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) override;
+};