执行tkinter按钮而不点击它 [英] Execute tkinter button without clicking on it

问题描述

我有一个Python GUI，可以进行简单的计算.运行名为 gui.py 的主文件将打开一个图形界面.我想打开图形界面并自动单击Kjørberegning按钮.(在挪威语中表示运行计算").

I have a Python GUI which makes a simple calculation. Running the main file called gui.py opens up a graphical interface. I would like to open the graphical interface and automatically click on the Kjør beregning button. (it means "Run calculation" in norwegian).

按钮在 gui.py 中的定义如下:

beregn_btn = tk.Button(av_beregn, text="Kjør beregning", font=bold, command=self._beregn)

如果可能的话，我想在这里添加一些代码来调用计算:到目前为止没有运气.

I'd like to add some code here to invoke calculation, if that is possible: So far without luck.

if __name__ == "__main__":
# Kjører program
root = KL_mast()
hovedvindu = Hovedvindu(root)
root.mainloop()

推荐答案

您可以这样做(一个小的示例，无需单击即可调用该按钮):

You can do like this (small example that invokes the button without a click):

import tkinter as tk

def beregn():
    print('invoke_button called by button clicked or invoked')
    
def invoke_button():
    """ this does not call beregn, but instead invokes the beregn_btn"""
    beregn_btn.invoke()
    root.after(2000, invoke_button)
    
root = tk.Tk()
beregn_btn = tk.Button(root, text="Kjør beregning", command=beregn)
beregn_btn.pack()

root.after(2000, invoke_button)   # start the invocation demo

root.mainloop()

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