Function ensure_hidden_cursor

native/linux/src/lib.rs:273–282

Build (once) a 1x1 fully-transparent cursor — the standard X11 trick for "hide the cursor". Subsequent calls reuse the cached cursor since X11 leaks Cursor handles otherwise.

()

    /// trick for "hide the cursor". Subsequent calls reuse the cached
    /// cursor since X11 leaks Cursor handles otherwise.
    unsafe fn ensure_hidden_cursor() -> x11::xlib::Cursor {
        if HIDDEN_CURSOR != 0 { return HIDDEN_CURSOR; }
        let pixmap = x11::xlib::XCreatePixmap(DISPLAY, X11_WINDOW, 1, 1, 1);
        let mut color: x11::xlib::XColor = std::mem::zeroed();
        let cursor = x11::xlib::XCreatePixmapCursor(
            DISPLAY, pixmap, pixmap, &mut color, &mut color, 0, 0);
        x11::xlib::XFreePixmap(DISPLAY, pixmap);
        HIDDEN_CURSOR = cursor;
        cursor
    }

    pub fn hide_cursor() {
        unsafe {