How can I ensure a message to the computer user is aknowledged?

[Gary Ainsworth]

I have a workbook that runs in the background that becomes the active
app when a certain ontime event occurs. I need to be able notify the
computer user of details and answer a question yes or no.

The problem is I realise that if the keyboard is being used at the
time the message box appproach may be aknowledged without even being
aware of the message in the first place.

i.e. I need to inform the user of alarm and prevent the message from
being ignored. How is this best done please?

regards
Gary

 

[BrianB]

Don't understand your logic here.

Normally typing occurs in the currently active application. If a
message box appears in Excel it sits there until Excel is activated and
a correct key is pressed. In my experience there has never been a
problem with this.