What kind of functions should be put in Form_Current event?

>What kind of functions should be put in Form_Current event?

Anything you want to happen when the form "moves" to a new record.  For example, suppose you want to change the color of a field depending on the value it contains.

Where should I put functions such as assign recordsource for the subforms, and adjust subform size?

Usually, the recordsource for a subform is assigned in design mode.  However, if your design filters the subform based on a field in the mainform, then it might make sense to change the recordsource in the form's current event.  

I don't know when or why you might want to change the size of a subform.

"Anything you want to happen when the form "moves" to a new record."
Of course, the Form Current event also triggers when moving through and *existing* record.

"Usually, the recordsource for a subform is assigned in design mode. "
However, when a tab control say has a subform on each tab ... a common scenario, rather than have all recordsources populating when a form opens, generally a performance hit ... you populate a subform's recordsource 'on demand' when that tab is selected.

mx

mx,
You are correct on all counts.  My language was sloppy.  I meant "moves to a different record", not a "new" record.  

no.  Just trying to keep it straight :-)

mx