Re: [PATCH 0/3] MR6926: winex11: Allow mapping visible windows that are outside of the virtual screen.

[Alexandre Julliard (＠julliard)]

> I am not sure what unmapping offscreen windows is for exactly, I suspect it is to allow some windows to be moved offscreen even though the WM would probably not allow it with visible windows. I think that if windows are managed by the host WM, we should allow it to control and constraint the windows to be on-screen if it decides so. Alternatively we could perhaps decide to minimize them instead (as a winex11 internal state, without notifying the Win32 side of minimization), as unmapping the windows will also make them disappear from the window selector, and makes it impossible to focus them back.

It was added because there are apps that move a window offscreen to hide it, and as you noted the WM usually wouldn't allow that.