====== HOLD_EVENTS property ======


 
==== Applies To ====
 
System.
 
==== Description ====
 
Holds Windows messages in the Presentation Server's queue until OpenEngine completes the current event processing.
 
==== Usage ====
 
//status// = **Get_Property**("**SYSTEM**", "**HOLD_EVENTS**")

//status// = **Set_Property**("**SYSTEM**", "**HOLD_EVENTS**", //truefalse//)

When the flag is set (default), Windows messages are prevented from being processed while the event handler is being executed. When not set (0), Windows messages are being processed; as a result, some OpenInsight events could be discarded if OpenEngine is still busy.
 
==== Remarks ====
 
This property is useful to avoid deadlock if the event handler is calling an external DLL that has its own message processing (such as MessageBox).
 
==== See Also ====
 
[[block_events|BLOCK_EVENTS property]], [[modal|MODAL property]]