[Lazarus] MacOS X : File Associations...

[dmitry boyarintsev]

AFAIK, you can receive binary being executed by reading ParamStr(0)

also check out these mailling threads. I've not read them myself :)
but i hope they contain information usefull for you.

http://lists.apple.com/archives/Carbon-dev/2006/Jun/msg00152.html
http://lists.apple.com/archives/carbon-dev/2007/Jan/msg00232.html
http://lists.apple.com/archives/Carbon-dev/2007/Jan/msg00226.html