How can I resolve the value of the installer command line parameter in Inno Setup Pascal Script?

Question

I am trying to start the S2S pixel from the installer on a successful installation. A pixel requires some details, such as IP, location, time, and sub-id.

I got all the details except for the subdirectory that is indicated on the command line using the /subID=xxxx switch during installation.

Answer 1

You can use {param:ParamName} pseudo- {param:ParamName} .

See also Can I accept custom command-line options using Inno Setup .

In Pascal Script, you can solve it using the ExpandConstant function :

 ExpandConstant('{param:subID}') 

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If you need some kind of custom parsing, you will have to explicitly parse the command line, iterate over the parameter list using ParamStr and ParamCount .

See some answers in the related question above as well:

• Passing string value to Inno Setup from command line application
• Install files if the command line switch is passed to the Inno Setup installer