Temp fix for error prompt

src/mainwindow.cpp

@@ -79,6 +79,7 @@ MainWindow::MainWindow(QWidget* parent) :
 	ui->centralWidget->setLayout(layout);
 	this->setWindowFlags(Qt::Window);
 	connect(EventCenter::Default(), &EventCenter::DeviceErrorRaise, [=](QObject* parent, QObject* msg) {
+	    if (!this->ui->centralWidget->isVisible()) return;
 		//默认旧模式
 		if (!msgDialog) {
 			msgDialog = new GUIMessageDialog(this);