i3/testcases/t/lib/i3test.pm

package i3test;
# vim:ts=4:sw=4:expandtab

use X11::XCB::Rect;
use X11::XCB::Window;
use X11::XCB qw(:all);

BEGIN {
    my $window_count = 0;
    sub counter_window {
        return $window_count++;
    }
}

sub open_standard_window {
    my ($x) = @_;

    my $window = $x->root->create_child(
        class => WINDOW_CLASS_INPUT_OUTPUT,
        rect => [ 0, 0, 30, 30 ],
        background_color => '#C0C0C0',
    );

    $window->name('Window ' . counter_window());
    $window->map;

    sleep(0.25);

    return $window;
}

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