The instructions here are helpful if the application that your script controls may take a while to complete some commands.
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To have a call to an application return immediately, and your script proceed further, use ignoring application responses.
ignoring application responses
tell application "MyScriptableApp"
compute 10000
end tell
end ignoring
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To query safely your application at any time, use with timeout of.
The with timeout of wrapper changes the timeout from the default (2 minutes) to the specified value (you have to write seconds). If the application has not returned a result when the timeout is elapsed, AppleScript triggers a timeout error.
on PollApp()
with timeout of 0.01 seconds
tell application "MyScriptableApp"
set the_result to velocity
end tell
end timeout
return the_result
end PollApp
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To have your script pause until the computation is complete, poll your application as described above in a loop, and insert smilepause to keep Smile responsive: while your script waits you can use Smile normally.
repeat
try
set v to PollApp()
exit repeat
end try
smilepause 0.01
end repeat
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More sophisticated client-server models can be implemented using multi-threading. For an example of a simple threaded application, download the sample code folder from the page below and use the ThreadedApp project for XCode.
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