Hello. The mouse through option exist for this reason. To make a widget/layer 'invisible' to avoid or allow interactions with anything exists behind it. So obviously the mouse enter/leave functions will not work because the one automatically erases the other. So I don't think that can be done all together..
Maybe the things can be done from the 'inside' allowing the function under certain circumstances like the mouse over or pressing a key to activate hide etc
I have these two examples that use this kind of 'truck's
https://jimking.deviantart.com/art/Rain ... -467534607https://jimking.deviantart.com/art/Brok ... -452784862I had help when I made then and the script was not created by me.
Let me think though and see if your thought can be done..
Keep in mind though that the keep on top doesn't forbid you to interact with what is behind when you have transparent widgets. So I think that the Lock position and the change opacity on mouse enter/leave will be fine.
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