Refactor InputObject(EventFilter and VirtualKeyboard).

src/UsctApplication.h

@@ -0,0 +1,17 @@
+#ifndef USCTAPPLICATION_H
+#define USCTAPPLICATION_H
+
+#include <QApplication>
+
+class UsctApplication : public QApplication
+{
+    Q_OBJECT
+public:
+    UsctApplication(int& argc, char** argv);
+    ~UsctApplication();
+
+private:
+    bool notify(QObject* aReceiver, QEvent* aEvent);
+};
+
+#endif // USCTAPPLICATION_H