Module form handling

Hi,

I am in the process of developing my first EE module. Thus far, I have set up all my screens, forms and form elements, but I cannot work out how to submit/process forms. From what I gather, the actions set in exp_actions have something to do with it, but I can’t find any coverage of this in the documentation. Can someone provide me with some guidance or a simple example? All I need to do is upload a file, parse it and show a result.

Also, the display class seems to have virtually every input type other than file. Thus, I have appended the appropriate control to the body manually, as follows:

$DSP->body .= <input type="file"...

Is this ok, or is there a “good practice” way of achieving this?

Thanks.