Merge branch '4.6' of git@scm.dev.nokia.troll.no:qt/qt into 4.6

1 files changed, 25 insertions, 5 deletions

diff --git a/src/gui/kernel/qwidget.cpp b/src/gui/kernel/qwidget.cpp
index e561aca..b7a96b0 100644
--- a/src/gui/kernel/qwidget.cpp
+++ b/src/gui/kernel/qwidget.cpp
@@ -1337,6 +1337,8 @@ void QWidget::create(WId window, bool initializeWindow, bool destroyOldWindow)
         d->setWindowIcon_sys(true);
     if (isWindow() && !d->topData()->iconText.isEmpty())
         d->setWindowIconText_helper(d->topData()->iconText);
+    if (isWindow() && !d->topData()->caption.isEmpty())
+        d->setWindowTitle_helper(d->topData()->caption);
     if (windowType() != Qt::Desktop) {
         d->updateSystemBackground();
 
@@ -1484,6 +1486,8 @@ void QWidgetPrivate::setWinId(WId id)                // set widget identifier
         mapper->remove(data.winid);
     }
 
+    const WId oldWinId = data.winid;
+
     data.winid = id;
 #if defined(Q_WS_X11)
     hd = id; // X11: hd == ident
@@ -1491,6 +1495,16 @@ void QWidgetPrivate::setWinId(WId id)                // set widget identifier
     if (mapper && id && !userDesktopWidget) {
         mapper->insert(data.winid, q);
     }
+
+    if(oldWinId != id) {
+        // Do not emit an event when the old winId is destroyed.  This only
+        // happens (a) during widget destruction, and (b) immediately prior
+        // to creation of a new winId, for example as a result of re-parenting.
+        if(id != 0) {
+            QEvent e(QEvent::WinIdChange);
+            QCoreApplication::sendEvent(q, &e);
+        }
+    }
 }
 
 void QWidgetPrivate::createTLExtra()
@@ -2209,8 +2223,8 @@ QWidget *QWidget::find(WId id)
     against. If Qt is using Carbon, the {WId} is actually an HIViewRef. If Qt
     is using Cocoa, {WId} is a pointer to an NSView.
 
-    \note We recommend that you do not store this value as it is likely to
-    change at run-time.
+    This value may change at run-time. An event with type QEvent::WinIdChange
+    will be sent to the widget following a change in window system identifier.
 
     \sa find()
 */
@@ -5649,9 +5663,8 @@ QString qt_setWindowTitle_helperHelper(const QString &title, const QWidget *widg
 void QWidgetPrivate::setWindowTitle_helper(const QString &title)
 {
     Q_Q(QWidget);
-    if (!q->testAttribute(Qt::WA_WState_Created))
-        createWinId();
-    setWindowTitle_sys(qt_setWindowTitle_helperHelper(title, q));
+    if (q->testAttribute(Qt::WA_WState_Created))
+        setWindowTitle_sys(qt_setWindowTitle_helperHelper(title, q));
 }
 
 void QWidgetPrivate::setWindowIconText_helper(const QString &title)
@@ -11982,3 +11995,10 @@ void QWidget::clearMask()
     XRender extension is not supported on the X11 display, or if the
     handle could not be created.
 */
+
+#ifdef Q_OS_SYMBIAN
+void QWidgetPrivate::_q_delayedDestroy(WId winId)
+{
+    delete winId;
+}
+#endif