Don't generate idle events when the event loop is not running

include/wx/qt/evtloop.h

@@ -24,6 +24,8 @@ public:
     virtual void WakeUp() wxOVERRIDE;
     virtual void DoYieldFor(long eventsToProcess) wxOVERRIDE;
 
+    void ScheduleIdleCheck();
+
 #if wxUSE_EVENTLOOP_SOURCE
     virtual wxEventLoopSource *AddSourceForFD(int fd, wxEventLoopSourceHandler *handler, int flags);
 #endif // wxUSE_EVENTLOOP_SOURCE

src/qt/evtloop.cpp

@@ -40,14 +40,13 @@ wxQtIdleTimer::wxQtIdleTimer( wxQtEventLoopBase *eventLoop )
 
     connect( this, &QTimer::timeout, this, &wxQtIdleTimer::idle );
     setSingleShot( true );
-    start( 0 );
 }
 
 bool wxQtIdleTimer::eventFilter( QObject *WXUNUSED( watched ), QEvent *WXUNUSED( event ) )
 {
     // Called for each Qt event, start with timeout 0 (run as soon as idle)
     if ( !isActive() )
-        start( 0 );
+        m_eventLoop->ScheduleIdleCheck();
 
     return false; // Continue handling the event
 }
@@ -60,7 +59,7 @@ void wxQtIdleTimer::idle()
     
     // Send idle event
     if ( m_eventLoop->ProcessIdle() )
-        start( 0 );
+        m_eventLoop->ScheduleIdleCheck();
 }
 
 wxQtEventLoopBase::wxQtEventLoopBase()
@@ -147,6 +146,12 @@ void wxQtEventLoopBase::DoYieldFor(long eventsToProcess)
     wxEventLoopBase::DoYieldFor(eventsToProcess);
 }
 
+void wxQtEventLoopBase::ScheduleIdleCheck()
+{
+    if ( IsInsideRun() )
+        m_qtIdleTimer->start(0);
+}
+
 #if wxUSE_EVENTLOOP_SOURCE
 
 template <void (wxEventLoopSourceHandler::*function)()>