diff --git a/src/ui/HSIDisplay.cc b/src/ui/HSIDisplay.cc
index 37a6865308582c12d9f7c4da8331752c296d019f..b9bfe7ec4a3ca342d908ba609abc3990962d9897 100644
--- a/src/ui/HSIDisplay.cc
+++ b/src/ui/HSIDisplay.cc
@@ -241,13 +241,17 @@ void HSIDisplay::mouseDoubleClickEvent(QMouseEvent * event)
     {
         if (event->button() == Qt::RightButton)
         {
-
+            startX = event->globalX();
         }
         else if (event->button() == Qt::LeftButton)
         {
 
         }
     }
+    else if (event->MouseMove)
+    {
+
+    }
 }
 
 /**