Show error box when trying to send null extra input

staldates / av-control

AV control system for St Aldates, using AVX as a base. (Formerly the UI side of the aldatesx project.)

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Closed jamesremuscat closed 7 years ago

jamesremuscat commented 8 years ago

If you try and send Extras to somewhere without first choosing an input, it will silently do nothing.

It would be useful if it popped up a message box saying "please choose an input" instead.