Add a virtual sendPostedEvents() to QEventDispatcherWin32.

Reimplement this in QWindowGuiEventDispatcher to send both Qt posted events and
queued QPA window system events. We need to do this at a well defined place,
instead of sending events outside of the eventloop from the Windows proc.

This fixes various hangs for example in tst_qinputdialog, which used a 0-timer
to close a dialog.

Change-Id: I64e0b8f1209fb434059a7fa667ed585902c19db4
Initial-patch-by: bhughes <bradley.hughes@nokia.com>
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/plugins/platforms/windows/qwindowsguieventdispatcher.cpp b/src/plugins/platforms/windows/qwindowsguieventdispatcher.cpp
index cd5d28317e..4dd409a2ab 100644
--- a/src/plugins/platforms/windows/qwindowsguieventdispatcher.cpp
+++ b/src/plugins/platforms/windows/qwindowsguieventdispatcher.cpp
@@ -97,6 +97,13 @@ bool QWindowsGuiEventDispatcher::processEvents(QEventLoop::ProcessEventsFlags fl
     return rc;
 }
 
+void QWindowsGuiEventDispatcher::sendPostedEvents()
+{
+    QWindowsGuiEventDispatcher::DispatchContext context = currentDispatchContext();
+    Q_ASSERT(context.first != 0);
+    QWindowSystemInterface::sendWindowSystemEvents(context.first, context.second);
+}
+
 QWindowsGuiEventDispatcher::DispatchContext QWindowsGuiEventDispatcher::currentDispatchContext()
 {
     const DispatchContextStack &stack = *dispatchContextStack();