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Finn J Johnsen <finn@_mobitech.no> writes:

> I'm used to "function insight" -tooltip (or whatever it's called?)
> which you get in Borlands products. You get the functionparametes as
> tootip as you write the functioncall, and I've became painfully used
> to it.
>
> Is this possible in Emacs (for Windows even) ?

For which programming language?  

`eldoc-mode' does it for Emacs Lisp, and the ilisp package provides it
for Common Lisp.  They don't actually use tooltips, but display the
information in the mini-buffer.

Something similar might be available for other languages -- for Java you
should probably look at the JDE package.