add demo
diff --git a/chatdialog.h b/chatdialog.h
new file mode 100644
index 0000000..401df9d
--- /dev/null
+++ b/chatdialog.h
@@ -0,0 +1,12 @@
+#ifndef CHATDIALOG_H
+#define CHATDIALOG_H
+#include "ui_chatdialog.h"
+
+class ChatDialog : public QDialog,  private Ui::ChatDialog 
+{
+	Q_OBJECT
+
+public:
+	ChatDialog(QWidget *parent = 0);
+};
+#endif