[Update] Main Window: 送信ボタンを押した後、メッセージ入力欄にフォーカスするように。

view.py

@@ -515,6 +515,7 @@ class View():
                 return "break" # For deleting the next line that will be inserted when the Enter key is pressed.
             def pressedSendMessageButtonFunction(_e):
                 main_window_registers.get("message_box_bind_Return")()
+                vrct_gui.entry_message_box.focus()
 
             entry_message_box = getattr(vrct_gui, "entry_message_box")
             entry_message_box.bind("<Shift-Return>", lambda _e: None) # This is to prevent message sending on Shift + Enter key press and just add a new line.