D7, IBO 4.5B

I'm using a TIB_ParamEdit to search in a TIB_Query.

When a user is connected remotely, there can be quite a wait to return
a result. I would like to have some kind of prompt, like change the
Screen.Cursor when the search actually starts, i.e. the user presses
Enter in the controls, and then change it back to crDefault when done.

I can't seem to find any events that are triggered for these
conditions. Can anyone make a suggestion?

Rick