Active application info?

[stroem]

I want to know how I can get (any) info about the active application?
like the caption of the active application or pid.

[PanGalactic]

getpid()? getppid()? getsid()? argv?

Resource info? http://www.opengroup.org/onlinepubs/000095399/basedefs/sys/resource.h.html

[stroem]

thx for the answer.