display = Display()
screen = display.screen()
root = screen.root

class VisualInfo:
    depth = 0
    data = {}

def main():
    # XMatchVisualInfo equivalent?
    visual_info = None

    for depth_item in screen.allowed_depths:
        if depth_item.depth != 32:
            continue

        visual_info = VisualInfo()
        visual_info.depth = depth_item.depth
        visual_info.data = depth_item.visuals[0]
        break

    if visual_info is None: raise SystemExit

    main_window = root.create_window(0, 0, 500, 500, 0, visual_info.depth, X.InputOutput,
             visual=visual_info.data.visual_id, event_mask=X.StructureNotifyMask|X.KeyPressMask|X.ExposureMask)
    
    main_window.change_attributes(border_pixel=0, background_pixel=0x50ffffff)