IE's Protected Mode prevents one dragging the address from the IE address bar into other applications (for example Notepad). There's an informative article on MSDN about Allowing Drag and Drop Operations in your Application. If I uncheck Enable Protected Mode in IE's settings and restart IE I still cannot drag the address from the IE address bar into other Notepad.
Why doesn't disabling IE's 'Protected Mode' enable the dragging-and-dropping of addresses from the IE address bar into Notepad? Is there a way to make that work without adding a registry entry for Notepad (following the instructions in the article I mentioned)? In fact adding the following to my registry in
HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Internet Explorer/Low Rights/DragDrop under a GUID key does not enable Notepad to accept these addresses
AppName (REG_SZ) = notepad.exe
AppPath (REG_SZ) = C:\Windows\System32
Policy (REG_DWORD) = 0x00000003 (3)
(N.B. This is actually part of me trying to work out how to get this address drag-and-drop working in Processing.)