How to Drag and Drop Using a Notebook Touchpad

XDnD (wikipedia) is the most widely used protocol, supported by GTK and Qt. It involves both applications and, to a certain extent, the window manager and the program switcher (e.g. GNOME Panel) if one is running.

Windows doesn't provide a built-in way to change the default action of drag and drop, but I found a tool called Drag'n'Drop Editor which will let you change the default action to "move".

This doesn't disable copying (you can still hold Ctrl to make a copy), but it should help prevent accidental copies.