Answer / vairamuthu

Query_Unload will execute first when unload the form. We
can stop the execution of the form_Unload method when we
set cancel = 1 in queryunload method.

Answer / rajnish tyagi

Both events allow the unload to be cancel, however only the QueryUnload event actually provides the cause for the unload - check the UnloadMode parameter for values such as vbFormCode and vbFormControlMenu. More details can be found by looking up the events in your MSDN library.

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