X11 non-default screen fixes (rebased on 0.30.x)#3976
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Based on rust-windowing#3973, which should be merged first. There's an API to programmatically specify X11 screen id (override what is determined from the `DISPLAY` env variable), but it doesn't work. Seeting up X Server with 2 screens and calling `DISPLAY=:0 X11_SCREEN_ID=1 cargo run --example window` should be equivalent to calling `DISPLAY=:0.1 cargo run --example window` The latter works (and places the window on the correct screen), but the former yields `failed to create initial window: Os(OsError { line: 620, file: "src/platform_impl/linux/x11/window.rs", error: X11Error(X11Error { error_kind: Match, error_code: 8, sequence: 219, bad_value: 1319, minor_opcode: 0, major_opcode: 1, extension_name: None, request_name: Some("CreateWindow") }) })` _Here `1319` is the root window id for screen 0, which doesn't match the screen 1 that we request._ The problem is that we need to factor in the screen id when determining the parent (root) window when not explicitly set. This patch does that.
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Released in https://github.com/rust-windowing/winit/releases/tag/v0.30.6 - thanks. |
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WindowAttributesExtX11::with_x11_screen(), extend example #3974 onv0.30.xbranch which we neededI'm drafting this until #3974 is merged to
master. Opening early for (our) documentation purposes. If this turns out useful, I'll have to also check-in the changelogs.CC @mbernat @bschwind.