In Applescript how does the with cancel button attribute of the show progress command work?

DEVONthink Automation
1

In Applescript I use the show progress command and I tried its with cancel button attribute, but clicking the then appearing cancel cross when the script runs doesn’t do anything for me.

I use the following test code:

	tell application id "DNtp"
		try
			activate
			show progress indicator "Working" steps 10 with cancel button
			repeat with a from 1 to 10
				step progress indicator "Step " & (a as string)
				delay 1
			end repeat
		on error errStr number errNum
			display dialog "error " & errStr
		end try
		hide progress indicator
	end tell

The error handler does not seem to be reached when I click the cancel button, rather the whole script runs to its normal end.

How can I respond to clicking the cancel button?

2

Add this to the repeat loop:

if cancelled progress then exit repeat
3

Cool! Will try this out! :slight_smile:

Definitely worth using this for a long running script.

4

Thanks. This works. :slight_smile:

PS: I rather use

if cancelled progress then error -128

That fits the logic of my script better.

5

From a day of experience I can say that if cancelled progress works, but not always:

Sometimes I click the cross and nothing happens - even not after waiting for a while, but if you click again and again eventually the script will stop.

Any way to make it more responsive?

6

It depends on what’s going on. Some processes have to finish and can’t be interrupted.

7

The script is canceled as soon as the script checks canceled progress again.

8

Yep, yep, I guess the create web document calls in the loop make it so sluggish…