How do I pass an array element as a parameter to an external command?

[DaveF]

Hi

How do I pass an array element as a parameter to an external command?

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Result[1] := "DSC01688.jpg"
Result[2] := "DSC01680.jpg"
XX := Result[1]	
YY := Result[2]	
		
run %comspec% /k ffmpeg -i "%XX%" -i "%YY%" -update true -filter_complex hstack output2.jpg

The above works as expected, but how do I place the array elements directly in the run command.
Like this, but works:

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run %comspec% /k ffmpeg -i "%Result[1]%" -i "%Result[2]%" -update true -filter_complex hstack output2.jpg

I'm guessing I'm baffled by the syntax

[flyingDman]

try:

Code: Select all

run, % comspec " /k ffmpeg -i " Result[1] " -i " Result[2] " -update true -filter_complex hstack output2.jpg"

[DaveF]

Thanks for the prompt reply,
This is all beyond me as I was unaware 'comspec' environmental variable could be run within AHK
It leads onto to the next question of how to run it without 'comspec'?

[flyingDman]

I am not sure you can. But you can hide the "dos window". Try:

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run, % comspec " /c ffmpeg -i " Result[1] " -i " Result[2] " -update true -filter_complex hstack output2.jpg",,Hide

[DaveF]

Thanks again.

Another problem that's reared its head is strings with spaces get split

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Result[1] := "DSC01688.jpg"
Result[2] := "DSC01681 shops.jpg"
XX := Result[1]	
YY := Result[2]	
		
;run, % comspec " /k ffmpeg -y -i " Result[1] " -i " Result[2] " -update true -filter_complex hstack output2.jpg"
run %comspec% /k ffmpeg -y -i "%XX%" -i "%YY%" -update true -filter_complex hstack output2.jpg

The above works, but if it's run using the commented out command, it returns the error:

DSC01681: No such file or directory

[Datapoint]

The above works, but if it's run using the commented out command, it returns the error:

DSC01681: No such file or directory

The quotes from your original version may be required since Result[2] contains a space in the file name.
You can test it with MsgBox to confirm the string matches your desired result.
Use "" within an expression for literal quotes. https://www.autohotkey.com/docs/v1/misc/EscapeChar.htm

Code: Select all

MsgBox % comspec " /k ffmpeg -y -i """ Result[1] """ -i """ Result[2] """ -update true -filter_complex hstack output2.jpg"

It leads onto to the next question of how to run it without 'comspec'?

Run CMD might work. https://www.autohotkey.com/docs/v1/Variables.htm#ComSpec
Maybe I misunderstood the question.