2 files changed, 12 insertions, 1 deletions
diff --git a/src/opengl/qgl_p.h b/src/opengl/qgl_p.h
index 9a58beb3d7..ff9baf8971 100644
--- a/src/opengl/qgl_p.h
+++ b/src/opengl/qgl_p.h
@@ -132,6 +132,7 @@ class Q_OPENGL_EXPORT QGLWidgetPrivate : public QWidgetPrivate
 public:
     QGLWidgetPrivate() : QWidgetPrivate()
                        , disable_clear_on_painter_begin(false)
+                       , parent_changing(false)
     {
     }
 
@@ -142,7 +143,7 @@ public:
     bool renderCxPm(QPixmap *pixmap);
     void cleanupColormaps();
     void aboutToDestroy() {
-        if (glcx)
+        if (glcx && !parent_changing)
             glcx->reset();
     }
 
@@ -153,6 +154,7 @@ public:
     QGLColormap cmap;
 
     bool disable_clear_on_painter_begin;
+    bool parent_changing;
 };
 
 // QGLContextPrivate has the responsibility of creating context groups.
diff --git a/src/opengl/qgl_qpa.cpp b/src/opengl/qgl_qpa.cpp
index f3388ee5ef..6e698bf939 100644
--- a/src/opengl/qgl_qpa.cpp
+++ b/src/opengl/qgl_qpa.cpp
@@ -362,6 +362,15 @@ void QGLWidgetPrivate::cleanupColormaps()
 
 bool QGLWidget::event(QEvent *e)
 {
+    Q_D(QGLWidget);
+
+    // A re-parent will destroy the window and re-create it. We should not reset the context while it happens.
+    if (e->type() == QEvent::ParentAboutToChange)
+        d->parent_changing = true;
+
+    if (e->type() == QEvent::ParentChange)
+        d->parent_changing = false;
+
     return QWidget::event(e);
 }