[Interest] Window ID of the current screen (root window)?

Richard Moore rich at kde.org
Fri Nov 20 14:55:55 CET 2020

On Fri, 20 Nov 2020 at 07:58, Volker Hilsheimer <volker.hilsheimer at qt.io>

> In Qt 6 there is no more Qt API to get the X11 root window for a display
> (also note that QDesktopWidget as a whole is gone).
> So, you either have to go native if you rely on X11 specific data
> structures (which the code does anyway, in verifying that there is a
> DISPLAY environment variable), or pass a pointer to (or index of) a QScreen
> if you want to place a UI on a specific display.

I'd hope there's a way to get the actual connection being used, rather than
relying on looking at the environment variables. For example, what happens
if -display is passed?


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