diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 82f9acd5..def901ed 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -64,6 +64,18 @@ MainWindow::MainWindow(QWidget *parent)
 {
     setAttribute(Qt::WA_TranslucentBackground);
     setWindowFlags(Qt::X11BypassWindowManagerHint);
+
+    installEventFilter(this);
+
+    connect(this, &MainWindow::releaseEvent, this, [=]{
+        qDebug() << "release event !!!";
+        m_keyboardReleased = true;
+        m_keyboardGrabbed =  windowHandle()->setKeyboardGrabEnabled(false);
+        qDebug() << "keyboardGrabbed:" << m_keyboardGrabbed;
+        removeEventFilter(this);
+    });
+
+    connect(this, &MainWindow::hideScreenshotUI, this, &MainWindow::hide);
 }
 
 MainWindow::~MainWindow()
@@ -516,19 +528,22 @@ void MainWindow::mouseReleaseEvent(QMouseEvent *ev)
     QLabel::mouseReleaseEvent(ev);
 }
 
-void MainWindow::showEvent(QShowEvent *event)
-{
-    QTimer::singleShot(100, this, &MainWindow::grabKeyboard);
-
-    return QLabel::showEvent(event);
-}
-
 void MainWindow::hideEvent(QHideEvent *event)
 {
     qApp->setOverrideCursor(Qt::ArrowCursor);
     QLabel::hideEvent(event);
 }
 
+bool MainWindow::eventFilter(QObject *watched, QEvent *event)
+{
+    if (!m_keyboardGrabbed && this->windowHandle() != NULL) {
+        m_keyboardGrabbed = this->windowHandle()->setKeyboardGrabEnabled(true);
+        qDebug() << "m_keyboardGrabbed:" << m_keyboardGrabbed;
+    }
+
+    return QLabel::eventFilter(watched, event);
+}
+
 void MainWindow::mouseMoveEvent(QMouseEvent *ev)
 {
     bool needRepaint = false;
diff --git a/src/mainwindow.h b/src/mainwindow.h
index 05c95f51..d27eadee 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -118,8 +118,8 @@ public slots:
     void mousePressEvent(QMouseEvent* ev) Q_DECL_OVERRIDE;
     void mouseMoveEvent(QMouseEvent *ev) Q_DECL_OVERRIDE;
     void mouseReleaseEvent(QMouseEvent *ev) Q_DECL_OVERRIDE;
-    void showEvent(QShowEvent *event) override;
     void hideEvent(QHideEvent *event) Q_DECL_OVERRIDE;
+    bool eventFilter(QObject* watched, QEvent* event) override;
 
 private:
     QPixmap getPixmapofRect(const QRect &rect);
@@ -161,6 +161,8 @@ public slots:
     bool m_isShiftPressed = false;
     bool m_noNotify = false;
     bool m_needSaveScreenshot = false;
+    bool m_keyboardGrabbed = false;
+    bool m_keyboardReleased = false;
 
     QString m_selectAreaName;
     QPixmap m_resizeBigPix;
diff --git a/src/screenshot.cpp b/src/screenshot.cpp
index 46bd1c47..4ced4276 100644
--- a/src/screenshot.cpp
+++ b/src/screenshot.cpp
@@ -38,17 +38,6 @@ Screenshot::Screenshot(QObject *parent)
 void Screenshot::initUI() {
     m_eventContainer = new EventContainer(this);
     m_window = new MainWindow;
-
-    connect(m_window, &MainWindow::releaseEvent, this, [=]{
-        qDebug() << "release event !!!";
-        m_keyboardReleased = true;
-        m_keyboardGrabbed =  m_window->windowHandle()->setKeyboardGrabEnabled(false);
-        qDebug() << "keyboardGrabbed:" << m_keyboardGrabbed;
-        removeEventFilter(this);
-    });
-    connect(m_window, &MainWindow::hideScreenshotUI, this, [=]{
-        m_window->hide();
-    });
 }
 
 void Screenshot::startScreenshot()
@@ -108,4 +97,3 @@ void Screenshot::savePathScreenshot(const QString &path)
 }
 
 Screenshot::~Screenshot() {}
-
diff --git a/src/screenshot.h b/src/screenshot.h
index 8325c806..76d3e729 100644
--- a/src/screenshot.h
+++ b/src/screenshot.h
@@ -41,9 +41,6 @@ public slots:
     void initUI();
 
     EventContainer* m_eventContainer = nullptr;
-    bool m_keyboardGrabbed = false;
-    bool m_keyboardReleased = false;
-
     MainWindow* m_window = nullptr;
 
 };