Feature request: borderless window

[fefo-dev]

After running some local multiplayer sections I've been wanting a way to to do a seamless splitscreen session. Best I can manage right now is removing the title with external borderless fullscreen/window tools, but I can't remove the menu that way and I lose drag/resize functions obviously:

Example

To the right there's a Media Player Classic window using it's minimal mode. You can drag the window from anywhere, resize it as normal and access other functions by either a top left hover or a right click. The last part is easily matched by the pause menu here.

Something like that would clash with the "scroll with click" you have on some pages, which I think it's a mobile feature that work on desktops, so perhaps this isn't the best solution if there's a solution at all. But even if you need to toogle between bordered/borderless to drag the window it would be nice as long as it fills the frame afterwards.

Hope I was clear enough.

[LunaMoo]

I mentioned that earlier in #13172 (comment)
Including code that can be used for it as my personal branch has it, through I don't have time to do anything fancy with it.

[fefo-dev]

Nice, that's pretty much the same line of thought. Looking forward for the next releases.