Fixed potential crash

diff --git a/src/thlibrary/thblackbar.cpp b/src/thlibrary/thblackbar.cpp
index 6ea1b893f9d727624286c130fefcc64abfd642bd..993f80256aff0e4966eb3a787bba737f70237819 100644 (file)
--- a/src/thlibrary/thblackbar.cpp
+++ b/src/thlibrary/thblackbar.cpp
@@ -148,7 +148,7 @@ void THBlackBar::mousePressEvent (QMouseEvent *event) {
 
 void THBlackBar::leaveEvent(QEvent *event) {
     // status tip
-    QMainWindow* mainWindow = static_cast<QMainWindow*>(window());
+    QMainWindow* mainWindow = dynamic_cast<QMainWindow*>(window());
     if (mainWindow) mainWindow->statusBar()->clearMessage();
 }