python - 检查 tkinter 小部件是否可见

Question

我需要能够检查 tkinter 小部件是否可见(如果其 pack 或 grid 方法已被调用)。

我目前正在做以下事情:

def is_visible(widget):
    try:
        widget.pack_info()
    except tk.TclError:
        # pack_info raises if pack hasn't been
        # called yet.
        return bool(widget.grid_info())
        # grid_info returns {} if grid hasn't been
        # called yet.
    else:
        return True

有什么方法可以改进此代码，方法是使用标准小部件属性，或通过一些其他不那么“hacky”的解决方案？

Answer 1

你可以试试widget.winfo_ismapped()相反:

Check if the window has been created. This method checks if Tkinter has created a window corresponding to the widget in the underlying window system (an X window, a Windows HWND, etc).

Returns: A true value if a window has been created.