Change the Coordinates Displayed in the Status Bar Programmatically

I am looking for a way to programmatically change the coordinates displayed in the status bar from WGS84 Decimal Degrees to DMS or MGRS. I know the user can change this themselves, but my requirements are to do it programmatically. I have built a tool that overrides the mousemove event and does this for me but when the user selects another tool the status bar goes back to displaying WGS84 coordinates in DD's. This conversion needs to be persistent, regardless of the tool being used. Is there a setting in the Application I can change programmatically to accomplish this? Thanks.