*** dialogs/qprintdialog_mac.mm	2013-03-28 15:12:25.000000000 -0700
--- dialogs/images/irfan_qprintdialog_mac.m	2013-03-28 15:15:24.000000000 -0700
***************
*** 286,291 ****
--- 286,296 ----
      printPanel = [NSPrintPanel printPanel];
      QT_MANGLE_NAMESPACE(QCocoaPrintPanelDelegate) *delegate = [[QT_MANGLE_NAMESPACE(QCocoaPrintPanelDelegate) alloc] init];
      [printPanel setOptions:macOptions];
+         // Call processEvents in case the event dispatcher has been interrupted, and needs to do
+         // cleanup of modal sessions. Do this before showing the native dialog, otherwise it will
+         // close down during the cleanup (QTBUG-17913):
+         qApp->processEvents(QEventLoop::ExcludeUserInputEvents, QEventLoop::ExcludeSocketNotifiers);
+ 
  
      if (modality == Qt::ApplicationModal) {
          int rval = [printPanel runModalWithPrintInfo:ep->printInfo];