inventroy drag and drop out of screen situation

now i use drag and drop skill to move widget(inventroy widget)
I have question when mousepointer move out of screen , and then widget do not show screen
how can i do this situation, i wanna show widget

plus, i already try to mouse ( lock on always), when i press alt+tab key
and then mouse recognize to move out of screen.
i hope to mousepointer move only specific ra

nge of screen.