Squeak complains that it doesn't know InputSensor.



-------- Original Message --------
Subject: Re: [Newbies] User Interrupt window
Local Time: December 9, 2017 10:06 AM
UTC Time: December 9, 2017 6:06 PM
From: ron@usmedrec.com
To: obrienj <obrienj@protonmail.com>, A friendly place to get answers to even the most basic questions about Squeak. <beginners@lists.squeakfoundation.org>

Hi OBrien J

One way to do this is to install a new interruptWatcher on Sensor.  

On the class you want to handle the message do something like

Sensor installInterruptWatcher:[self userInterruptWatcher].

Yourclass >> userInterruptWatcher
"Wait for user interrupts and open a notifier on the active process when one occurs."
| interruptSemaphore |
interruptSemaphore := InputSensor interruptSemaphore.
[true] whileTrue: [
interruptSemaphore wait.
self signal: #userInterrupt.
].

Then implement your handler with something like onUserInterrupt to respond to the signal.  Or you could just call a method in your class to handle the interrupt.  

Hope that helps!

All the best,

Ron Teitelbaum 


On Sat, Dec 9, 2017 at 12:09 PM, obrienj <obrienj@protonmail.com> wrote:
Is there a way to intercept the 'User Interrupt'  window that pops up when the user types the interrupt key and replace it with a customized dialog window? I've used on: do: to intercept Error messages but can't seem to do the same with EventSensor messages.




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