diff --git a/src/src/UI/Window/QVTKOpenGLNativeWidget2.cpp b/src/src/UI/Window/QVTKOpenGLNativeWidget2.cpp
new file mode 100644
index 0000000..f6774c8
--- /dev/null
+++ b/src/src/UI/Window/QVTKOpenGLNativeWidget2.cpp
@@ -0,0 +1,28 @@
+//
+// Created by Krad on 2022/11/4.
+//
+
+#include "QVTKOpenGLNativeWidget2.h"
+
+#include <vtkGenericOpenGLRenderWindow.h>
+QVTKOpenGLNativeWidget2::QVTKOpenGLNativeWidget2(QWidget *parent, Qt::WindowFlags f) :QVTKOpenGLNativeWidget(parent,f) {
+
+}
+
+QVTKOpenGLNativeWidget2::~QVTKOpenGLNativeWidget2() {
+
+}
+
+void QVTKOpenGLNativeWidget2::leaveEvent(QEvent *event) {
+    QWidget::leaveEvent(event);
+    if (RenderWindow){
+        RenderWindow->Render();
+    }
+}
+
+void QVTKOpenGLNativeWidget2::enterEvent(QEvent *event) {
+    QWidget::enterEvent(event);
+    if (RenderWindow){
+        RenderWindow->Render();
+    }
+}
diff --git a/src/src/UI/Window/QVTKOpenGLNativeWidget2.h b/src/src/UI/Window/QVTKOpenGLNativeWidget2.h
new file mode 100644
index 0000000..cdd5477
--- /dev/null
+++ b/src/src/UI/Window/QVTKOpenGLNativeWidget2.h
@@ -0,0 +1,22 @@
+//
+// Created by Krad on 2022/11/4.
+//
+
+#ifndef OMEGAV_QVTKOPENGLNATIVEWIDGET2_H
+#define OMEGAV_QVTKOPENGLNATIVEWIDGET2_H
+
+#include <QVTKOpenGLNativeWidget.h>
+
+class QVTKOpenGLNativeWidget2 :public QVTKOpenGLNativeWidget {
+    Q_OBJECT
+    typedef QOpenGLWidget Superclass;
+public:
+    QVTKOpenGLNativeWidget2(QWidget* parent = Q_NULLPTR, Qt::WindowFlags f = Qt::WindowFlags());
+    ~QVTKOpenGLNativeWidget2() override;
+protected:
+    void leaveEvent(QEvent *event) override;
+    void enterEvent(QEvent *event) override;
+};
+
+
+#endif //OMEGAV_QVTKOPENGLNATIVEWIDGET2_H
diff --git a/src/src/UI/Window/VolumeRenderingWindow.cpp b/src/src/UI/Window/VolumeRenderingWindow.cpp
index 7b5071f..1bb6356 100644
--- a/src/src/UI/Window/VolumeRenderingWindow.cpp
+++ b/src/src/UI/Window/VolumeRenderingWindow.cpp
@@ -6,10 +6,10 @@
 
 #include <QVBoxLayout>
 #include <qdebug.h>
-#include <QVTKOpenGLNativeWidget.h>
 #include <vtkRenderer.h>
 #include <vtkGenericOpenGLRenderWindow.h>
 
+#include "QVTKOpenGLNativeWidget2.h"
 #include "Common/SeriesImageSet.h"
 #include "Rendering/Viewer/VolumeRenderingViewer.h"
 #include "UI/Widget/ToolBar/VolumeRenderingToolBar.h"
@@ -27,8 +27,7 @@ VolumeRenderingWindow::VolumeRenderingWindow(QWidget *parent , Qt::WindowFlags f
     layout->setSpacing(0);
     auto toolBar = new VolumeRenderingToolBar(this);
     layout->addWidget(toolBar);
-    auto widget =  new QVTKOpenGLNativeWidget(this);
-
+    auto widget =  new QVTKOpenGLNativeWidget2(this);
     vtkNew<vtkRenderer> renderer;
     mViewer->SetRenderWindow(mRenderWin);
     mViewer->SetRenderer(renderer);