Problem:
I need use a Timer control in a VFP app. The idea is that the application user can schedule alarms and warnings messages for a specified day and hour. Similar to MS Outlook warnings tasks.
I had thinking about filling a array in memory with the hours of alarms warning of the current day and current logged user and check the event timer of timer control every minute.
Questions:
1) Affect significantly the app. performance to have this active control running every 60 seconds this event ?
2) really this control is executed in background? Run in another thread ?
3) Is necessary run the program that manages the alarms in another EXE or it is correct runs within the same app. ?
4) Somebody had to develop some kind of alarm or warning programmed in its apps, as it solved it ?

Thanks for yours comments.
Greeting.
RFR