How to write a method/message with multiple parameters?

Question

How do you write a method/message with multiple parameters?

EDIT: Like multiple parameters for a single method/message, I mean.

Answer 1

Jeff accurately described what the methods look like. If you want to see how it would look as a C function, it would look something like:

void drawRoundedRect_inView_withColor_fill( MyObject* self, SEL _cmd, NSRect aRect, NSView* aView, NSColor* color, BOOL fill );

The parameter "names" all join together to form a single method name, and two hidden parameters, self and _cmd are added to the front.