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

1 files changed, 8 insertions, 1 deletions

diff --git a/src/gui/kernel/qapplication.cpp b/src/gui/kernel/qapplication.cpp
index 839e465..b168188 100644
--- a/src/gui/kernel/qapplication.cpp
+++ b/src/gui/kernel/qapplication.cpp
@@ -126,7 +126,7 @@ int QApplicationPrivate::app_compile_version = 0x040000; //we don't know exactly
 QApplication::Type qt_appType=QApplication::Tty;
 QApplicationPrivate *QApplicationPrivate::self = 0;
 
-QInputContext *QApplicationPrivate::inputContext;
+QInputContext *QApplicationPrivate::inputContext = 0;
 
 bool QApplicationPrivate::quitOnLastWindowClosed = true;
 
@@ -3716,6 +3716,13 @@ bool QApplication::notify(QObject *receiver, QEvent *e)
                                                                          Qt::MouseFocusReason);
                 }
 
+                // ### Qt 5 These dynamic tool tips should be an OPT-IN feature. Some platforms
+                // like Mac OS X (probably others too), can optimize their views by not
+                // dispatching mouse move events. We have attributes to control hover,
+                // and mouse tracking, but as long as we are deciding to implement this
+                // feature without choice of opting-in or out, you ALWAYS have to have
+                // tracking enabled. Therefore, the other properties give a false sense of
+                // performance enhancement.
                 if (e->type() == QEvent::MouseMove && mouse->buttons() == 0) {
                     d->toolTipWidget = w;
                     d->toolTipPos = relpos;