适用于 python 的 PySide2/Qt：单击按钮时 GUI 冻结

Question

I made an Auto accept queue program for League of Legends. But the GUI freezes when i click the button. the button is connected the function queue. I guess the while loop is the problem. Because it worked when there was not while loop.

import pyautogui as pag
import time
import telegram
import sys
from PySide2.QtWidgets import QWidget, QVBoxLayout, QHBoxLayout, QGridLayout, QPushButton, QSizePolicy, QLabel, QApplication
from PySide2.QtCore import *

# telegram

api_key = "xxxxxxxx"

bot = telegram.Bot(token = api_key)

chat_id = 111111111

# PySide2

class Form(QWidget):
    def __init__(self):
        super(Form, self).__init__()
        self.setWindowTitle("Auto Accept Queue-1.0.0")
        self.resize(480, 270)

        self.vb = QVBoxLayout()
        self.hbMid = QHBoxLayout()
        self.gl = QGridLayout()

        self.vb.addStretch()
        self.vb.addLayout(self.hbMid)
        self.vb.addStretch()

        self.hbMid.addStretch()
        self.hbMid.addLayout(self.gl)
        self.hbMid.addStretch()

        self.btn = QPushButton("자동 수락 시작")
        self.btn.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
        self.btn.setFixedSize(140, 80)
        self.btn.setStyleSheet("font-size: 16px; font-family: 맑은 고딕;")
        self.lblHotkey = QLabel("단축키 : F8")
        self.lblHotkey.setAlignment(Qt.AlignCenter)
        self.lblHotkey.setStyleSheet("font-size: 14px; font-family: 맑은 고딕;")

        self.gl.addWidget(self.btn, 0, 0)
        self.gl.addWidget(self.lblHotkey, 2, 0)

        self.btn.clicked.connect(self.queue)

        self.setLayout(self.vb)

    def queue(self):
        self.btn.setText("자동 수락 중...")
        while 1:
            i = pag.locateCenterOnScreen("img.png")
            if i:
                pag.click(i)
                print("Accepted queue! The program will exit.")
                bot.sendMessage(chat_id=chat_id, text="Accepted queue!")
                break
            else:
                time.sleep(1)
                print("Accepting queue...")

if __name__ == '__main__':
    app = QApplication([])
    form = Form()
    form.show()
    sys.exit(app.exec_())

Answer 1

The problem is that the loop executed in the "queue" method consumes a lot of time preventing the GUI from doing its work, the solution is to execute it in another thread:

import sys
import threading
import time

from PySide2.QtWidgets import (
    QWidget,
    QVBoxLayout,
    QHBoxLayout,
    QGridLayout,
    QPushButton,
    QSizePolicy,
    QLabel,
    QApplication,
)
from PySide2.QtCore import Qt

import pyautogui as pag

import telegram


api_key = "xxxxxxxx"
bot = telegram.Bot(token=api_key)
chat_id = 111111111


def process():
    while True:
        i = pag.locateCenterOnScreen("img.png")
        if i:
            pag.click(i)
            print("Accepted queue! The program will exit.")
            bot.sendMessage(chat_id=chat_id, text="Accepted queue!")
            break
        else:
            time.sleep(1)
            print("Accepting queue...")


class Form(QWidget):
    def __init__(self):
        super(Form, self).__init__()
        self.setWindowTitle("Auto Accept Queue-1.0.0")
        self.resize(480, 270)

        self.vb = QVBoxLayout(self)
        self.hbMid = QHBoxLayout()
        self.gl = QGridLayout()

        self.vb.addStretch()
        self.vb.addLayout(self.hbMid)
        self.vb.addStretch()

        self.hbMid.addStretch()
        self.hbMid.addLayout(self.gl)
        self.hbMid.addStretch()

        self.btn = QPushButton("자동 수락 시작")
        self.btn.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
        self.btn.setFixedSize(140, 80)
        self.btn.setStyleSheet("font-size: 16px; font-family: 맑은 고딕;")
        self.lblHotkey = QLabel("단축키 : F8")
        self.lblHotkey.setAlignment(Qt.AlignCenter)
        self.lblHotkey.setStyleSheet("font-size: 14px; font-family: 맑은 고딕;")

        self.gl.addWidget(self.btn, 0, 0)
        self.gl.addWidget(self.lblHotkey, 2, 0)

        self.btn.clicked.connect(self.queue)

    def queue(self):
        self.btn.setText("자동 수락 중...")
        threading.Thread(target=process, daemon=True).start()


if __name__ == "__main__":
    app = QApplication([])
    form = Form()
    form.show()
    sys.exit(app.exec_())