diff --git a/src/launcher/GUI/paramEditorDialog.h b/src/launcher/GUI/paramEditorDialog.h
index 48c70da..7092a95 100644
--- a/src/launcher/GUI/paramEditorDialog.h
+++ b/src/launcher/GUI/paramEditorDialog.h
@@ -257,6 +257,7 @@ private:
             QDoubleSpinBox* spinBox = new QDoubleSpinBox();
             spinBox->setMaximumWidth(160);
             spinBox->setDecimals(3);//显示小位数
+            spinBox->setRange(-1e6, 1e6);
             spinBox->setValue(value.toDouble());
             spinBox->setToolTip(generateTypeHint(type));
             return spinBox;
diff --git a/src/launcher/GUI/uiModule/uiModule_cameraRealTimeCapture.h b/src/launcher/GUI/uiModule/uiModule_cameraRealTimeCapture.h
index a7d6eb8..f4ccc15 100644
--- a/src/launcher/GUI/uiModule/uiModule_cameraRealTimeCapture.h
+++ b/src/launcher/GUI/uiModule/uiModule_cameraRealTimeCapture.h
@@ -123,4 +123,17 @@ public:
 
 #pragma endregion
     }
+protected:
+    void closeEvent(QCloseEvent* event) override {
+        // 安全停止取流线程
+        if (_GrabbingThread && _GrabbingThread->isRunning()) {
+            _GrabbingThread->stop();
+            _GrabbingThread->wait(500); // 给线程一点时间退出
+        }
+        // 复位按钮文本（如果按钮仍存在）
+        if (auto btn = this->findChild<QPushButton*>("btn_startGrabbing")) {
+            btn->setText("开始取流");
+        }
+        QWidget::closeEvent(event);
+    }
 };
\ No newline at end of file
diff --git a/src/launcher/GUI/uiModule/uiModule_userSwitch.h b/src/launcher/GUI/uiModule/uiModule_userSwitch.h
index 629d164..7db6208 100644
--- a/src/launcher/GUI/uiModule/uiModule_userSwitch.h
+++ b/src/launcher/GUI/uiModule/uiModule_userSwitch.h
@@ -70,9 +70,6 @@ private slots:
         
         stopAutoLogout();
         
-        QMessageBox::information(nullptr, TR("Auto Logout"), 
-            TR("Login time exceeded 3 minutes, auto logout"));
-        
         emit userLoggedOut();
     }