Merge remote-tracking branch 'origin/5.6' into 5.7

Conflicts:
	examples/qtestlib/tutorial5/containers.cpp
	examples/widgets/tools/tools.pro
	src/corelib/io/qprocess.cpp
	src/corelib/io/qprocess_unix.cpp
	src/corelib/io/qprocess_win.cpp
	src/network/kernel/qdnslookup_unix.cpp
	src/plugins/platforms/xcb/qxcbconnection_xi2.cpp
	src/testlib/qtestcase.cpp
	tools/configure/configureapp.cpp

Change-Id: I838ae7f082535a67a4a53aa13a21ba5580758be8

1 files changed, 11 insertions, 0 deletions

diff --git a/src/gui/kernel/qwindow.cpp b/src/gui/kernel/qwindow.cpp
index 107ea73a56..81310ae2a2 100644
--- a/src/gui/kernel/qwindow.cpp
+++ b/src/gui/kernel/qwindow.cpp
@@ -2146,6 +2146,17 @@ bool QWindow::event(QEvent *ev)
         break;
     }
 
+    case QEvent::PlatformSurface: {
+        if ((static_cast<QPlatformSurfaceEvent *>(ev))->surfaceEventType() == QPlatformSurfaceEvent::SurfaceAboutToBeDestroyed) {
+#ifndef QT_NO_OPENGL
+            QOpenGLContext *context = QOpenGLContext::currentContext();
+            if (context && context->surface() == static_cast<QSurface *>(this))
+                context->doneCurrent();
+#endif
+        }
+        break;
+    }
+
     default:
         return QObject::event(ev);
     }