RE: How to simulate pressing a key

[Drew Adams]

> I can not just call the function which key is binding for it may
> have uncertainty parameter, like tab's function forward-button has
> parameter, but lisp-indent-line does not.
> 
> although execute-extended-command works perfect, but I can not use
> it in my elisp function.

I'm not sure I understand your question, but if I do, have a look at function
`call-interactively'. It lets you call an interactive function (command) in such
a way that the function's `interactive' spec is used to obtain the argument
values.

See the Elisp manual, node `Interactive Call'.