(PA) fixed bug with respect to modal dialogues.

libraries/ObjectIO/ObjectIO/OS Windows/oswindow.icl

@@ -332,6 +332,8 @@ where
 								-> (!CrossCallInfo,!u:s,!*OSToolbox)
 	OScreateModalDialogCallback getOSEvents setOSEvents handleOSEvents osEvent s tb
 		# (replyToOS,s)				= handleOSEvents osEvent s
+		| not (isEmpty replyToOS)	// information must be returned to OS
+			= (setReplyInOSEvent replyToOS,s,tb)
 		# (osEvents, s)				= getOSEvents s
 		# (noDelayEvents,osEvents)	= OSisEmptyEvents osEvents
 		| noDelayEvents

libraries/ObjectIO/ObjectIO/scheduler.icl

@@ -250,11 +250,11 @@ where
 	checkOSZeroTimerEvent maybe_timer osTime osevent osEvents
 		| isJust maybe_zerotimer_start && zerotimer
 			| osTime-zerotimer_start<=zerotimelimit
-				= OSinsertEvents [osevent] osEvents
+				= OSappendEvents [osevent] osEvents
 			// otherwise
 				= osEvents
 		| isNothing maybe_zerotimer_start && zerotimer
-			= OSinsertEvents [createOSZeroTimerEvent osTime] osEvents
+			= OSappendEvents [createOSZeroTimerEvent osTime] osEvents
 		| otherwise
 			= osEvents
 	where