I have a .NET application that has an ESRI map control on it. The map control has one drag and drop event called <map name>_OnOleDrop. The problem is this event only gets hit if I am dragging something from somewhere off of the map control. For instance, dragging a file from Windows Explorer and dropping it on the map. I want to drag one bitmap that is on the map and drop it on another bitmap that is on the map. Can I implement my own functions to do this, and if so how? Sould I just try using the mouse up and mouse down events and changing the cursor?