4 files changed, 11 insertions, 7 deletions
diff --git a/src/client/qwaylandshellsurface_p.h b/src/client/qwaylandshellsurface_p.h
index 6f233616..1f2346a9 100644
--- a/src/client/qwaylandshellsurface_p.h
+++ b/src/client/qwaylandshellsurface_p.h
@@ -43,6 +43,7 @@
 #define QWAYLANDSHELLSURFACE_H
 
 #include <QtCore/QSize>
+#include <QObject>
 
 #include <wayland-client.h>
 
@@ -56,8 +57,9 @@ class QWaylandWindow;
 class QWaylandInputDevice;
 class QWindow;
 
-class Q_WAYLAND_CLIENT_EXPORT QWaylandShellSurface
+class Q_WAYLAND_CLIENT_EXPORT QWaylandShellSurface : public QObject
 {
+    Q_OBJECT
 public:
     explicit QWaylandShellSurface(QWaylandWindow *window);
     virtual ~QWaylandShellSurface() {}
diff --git a/src/client/qwaylandwindow.cpp b/src/client/qwaylandwindow.cpp
index 976ebba1..1b939726 100644
--- a/src/client/qwaylandwindow.cpp
+++ b/src/client/qwaylandwindow.cpp
@@ -232,7 +232,7 @@ void QWaylandWindow::setVisible(bool visible)
                 parent = mDisplay->lastInputWindow();
             }
             if (parent) {
-                QWaylandWlShellSurface *wlshellSurface = dynamic_cast<QWaylandWlShellSurface*>(mShellSurface);
+                QWaylandWlShellSurface *wlshellSurface = qobject_cast<QWaylandWlShellSurface*>(mShellSurface);
                 if (wlshellSurface)
                     wlshellSurface->setPopup(parent, mDisplay->lastInputDevice(), mDisplay->lastInputSerial());
             }
@@ -481,7 +481,7 @@ bool QWaylandWindow::createDecoration()
 {
     // so far only xdg-shell support this "unminimize" trick, may be moved elsewhere
     if (mState == Qt::WindowMinimized) {
-        QWaylandXdgSurface *xdgSurface = dynamic_cast<QWaylandXdgSurface *>(mShellSurface);
+        QWaylandXdgSurface *xdgSurface = qobject_cast<QWaylandXdgSurface *>(mShellSurface);
         if ( xdgSurface ) {
             if (xdgSurface->isFullscreen()) {
                 setWindowStateInternal(Qt::WindowFullScreen);
diff --git a/src/client/qwaylandwlshellsurface_p.h b/src/client/qwaylandwlshellsurface_p.h
index 8d6e298b..c9b8ac94 100644
--- a/src/client/qwaylandwlshellsurface_p.h
+++ b/src/client/qwaylandwlshellsurface_p.h
@@ -57,9 +57,10 @@ class QWaylandInputDevice;
 class QWindow;
 class QWaylandExtendedSurface;
 
-class Q_WAYLAND_CLIENT_EXPORT QWaylandWlShellSurface : public QtWayland::wl_shell_surface
-        , public QWaylandShellSurface
+class Q_WAYLAND_CLIENT_EXPORT QWaylandWlShellSurface : public QWaylandShellSurface
+    , public QtWayland::wl_shell_surface
 {
+    Q_OBJECT
 public:
     QWaylandWlShellSurface(struct ::wl_shell_surface *shell_surface, QWaylandWindow *window);
     virtual ~QWaylandWlShellSurface();
diff --git a/src/client/qwaylandxdgsurface_p.h b/src/client/qwaylandxdgsurface_p.h
index 635c9496..f2871570 100644
--- a/src/client/qwaylandxdgsurface_p.h
+++ b/src/client/qwaylandxdgsurface_p.h
@@ -57,9 +57,10 @@ class QWaylandInputDevice;
 class QWindow;
 class QWaylandExtendedSurface;
 
-class Q_WAYLAND_CLIENT_EXPORT QWaylandXdgSurface : public QtWayland::xdg_surface
-        , public QWaylandShellSurface
+class Q_WAYLAND_CLIENT_EXPORT QWaylandXdgSurface : public QWaylandShellSurface
+        , public QtWayland::xdg_surface
 {
+    Q_OBJECT
 public:
     QWaylandXdgSurface(struct ::xdg_surface *shell_surface, QWaylandWindow *window);
     virtual ~QWaylandXdgSurface();