diff --git a/qtsgraph.cpp b/qtsgraph.cpp
index a3263ba..5d8bfd2 100644
--- a/qtsgraph.cpp
+++ b/qtsgraph.cpp
@@ -117,7 +117,7 @@ int QTSGraph::ReadKey()
 {
     if(!EventKeyPressed || IDPressedKey == -1)
     {
-        while(!KeyPressed())
+        while(!KeyPressed() && this->isVisible())
             Delay(100);
     }
     int t = IDPressedKey;
@@ -211,3 +211,11 @@ void QTSGraph::keyPressEvent(QKeyEvent *event)
         // Нажатие Esc
     }
 }
+
+void QTSGraph::closeEvent(QCloseEvent *event)
+{
+    //Закрытие окна
+    delete ResetTimer;
+    delete StartTimer;
+    delete this;
+}
diff --git a/qtsgraph.h b/qtsgraph.h
index 2485f1b..0463c34 100644
--- a/qtsgraph.h
+++ b/qtsgraph.h
@@ -130,4 +130,5 @@ protected:
     void paintEvent(QPaintEvent *event) override;
     void mousePressEvent(QMouseEvent *event) override;
     void keyPressEvent(QKeyEvent *event)  override;
+    void closeEvent(QCloseEvent *event) override;
 };