diff --git a/QChatClient/chatwidget.cpp b/QChatClient/chatwidget.cpp
index 69f1809..d6aebab 100644
--- a/QChatClient/chatwidget.cpp
+++ b/QChatClient/chatwidget.cpp
@@ -11,7 +11,7 @@ void ChatWidget::printMsg(const string &str)
     this->setFontWeight(QFont::Normal);
     this->setFontItalic(false);
     this->setTextColor(Qt::black);
-    this->append(QString::fromStdString(str));
+    this->append(QString::fromUtf8(str.c_str()));
 }
 
 void ChatWidget::printServerMsg(const string &str)
diff --git a/QChatClient/chatwindow.cpp b/QChatClient/chatwindow.cpp
index 56fc9aa..0903c93 100644
--- a/QChatClient/chatwindow.cpp
+++ b/QChatClient/chatwindow.cpp
@@ -26,7 +26,7 @@ ChatWindow::ChatWindow(QString nick, QWidget *parent) :
 
 void ChatWindow::notifyClose()
 {
-    emit ui->actionExit->triggered();
+    this->close();
 }
 
 void ChatWindow::notifyPrint(string &msg)
@@ -49,7 +49,7 @@ void ChatWindow::printMsg(QString str)
 
 void ChatWindow::sendMsg()
 {
-    QString msg = ui->inputText->toPlainText();
+    QString msg = ui->inputText->toPlainText().toUtf8();
     ui->inputText->clear();
     msg = "@" + nickName + " " +msg;
     ((Chatroom*)this->parent())->putMsgToSendQueue(msg);