Which (if any) mouse proc is called for over_object when you're dragging an object?
In response to Cloud Magic
No, that is only called when no mouse buttons are pressed.

I'm mouse-dragging object A over object B.
A.MouseDrag() is called with over_object == B.
Nothing seems to be called for B.
This is a problem, because I need params for a mouse event over B.
Wouldn't the parameters for B's event (if there was one) be the same as the parameters for A.MouseDrag() when over_object is B?
In response to Forum_account
Actually, I'm trying to drag one object by activating mouse-tracking on mousedown or mousedrag. Unfortunately, although "mouse tracker" appears in the status bar, there's nothing called for it that I can use for mouse_tracker.update().
In response to Kaiochao
Could you somehow hard-code these procs to make them do your desired actions?
Call MouseEntered() within MouseDrag()

In response to Cloud Magic
You can't call the mouse procedures and expect them to have any of the appropriate arguments set automatically.