diff --git a/gtk2/gtk3.cpp b/gtk2/gtk3.cpp
index 1c21e9f..cafd2c0 100644
--- a/gtk2/gtk3.cpp
+++ b/gtk2/gtk3.cpp
@@ -3,18 +3,19 @@ void hello(GtkWidget *widget,gpointer data){
 	g_print("hello\n");
 }
 int main(int argc,char *argv[]){
-	GtkWidget *window;
-	GtkWidget *button;
-	gtk_init(&argc,&argv);
+	GtkWidget *window;//Point to window
+	GtkWidget *button;//point to button
+	gtk_init(&argc,&argv);//inital 
 	window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
-	g_signal_connect(G_OBJECT(window),"delete_event",G_CALLBACK(gtk_main_quit),NULL);
-	gtk_window_set_title(GTK_WINDOW(window),"Gtk(3) Test");
-	gtk_window_set_default_size(GTK_WINDOW(window),40,20);
-	gtk_window_set_position(GTK_WINDOW(window),GTK_WIN_POS_CENTER);
-	button=gtk_button_new_with_label("hello");
-	g_signal_connect(G_OBJECT(button),"clicked",G_CALLBACK(hello),NULL);
-	gtk_container_add(GTK_CONTAINER(window),button);
-	gtk_widget_show(window);
-	gtk_widget_show(button);
-	gtk_main();
+	g_signal_connect(G_OBJECT(window),"delete_event",G_CALLBACK(gtk_main_quit),NULL);//Create a window
+	gtk_window_set_title(GTK_WINDOW(window),"Gtk(3) Test");//Window title
+	gtk_window_set_default_size(GTK_WINDOW(window),40,20);//Window size
+	gtk_window_set_position(GTK_WINDOW(window),GTK_WIN_POS_CENTER);//Window Position
+	button=gtk_button_new_with_label("hello");//Create button
+	g_signal_connect(G_OBJECT(button),"clicked",G_CALLBACK(hello),NULL);//Call a function when clicked
+	gtk_container_add(GTK_CONTAINER(window),button);//Add button to window
+	gtk_widget_show(window);//show window
+	gtk_widget_show(button);//show button
+	gtk_main();//Main Function
+	return FALSE;
 }