71 lines
1.3 KiB
Python
71 lines
1.3 KiB
Python
|
# -*- coding: utf-8 -*-
|
|||
|
|
'''
|
|||
|
|
【簡介】
|
|||
|
|
PyQT5中QThread範例
|
|||
|
|
|
|||
|
|
|
|||
|
|
'''
|
|||
|
|
|
|||
|
|
import sys
|
|||
|
|
from PyQt5.QtCore import *
|
|||
|
|
from PyQt5.QtGui import *
|
|||
|
|
from PyQt5.QtWidgets import *
|
|||
|
|
|
|||
|
|
global sec
|
|||
|
|
sec=0
|
|||
|
|
|
|||
|
|
class WorkThread(QThread):
|
|||
|
|
trigger = pyqtSignal()
|
|||
|
|
def __int__(self):
|
|||
|
|
super(WorkThread,self).__init__()
|
|||
|
|
|
|||
|
|
def run(self):
|
|||
|
|
for i in range(2000000000):
|
|||
|
|
pass
|
|||
|
|
|
|||
|
|
# 迴圈完畢後發射訊號
|
|||
|
|
self.trigger.emit()
|
|||
|
|
|
|||
|
|
def countTime():
|
|||
|
|
global sec
|
|||
|
|
sec += 1
|
|||
|
|
# LED顯示數字+1
|
|||
|
|
lcdNumber.display(sec)
|
|||
|
|
|
|||
|
|
def work():
|
|||
|
|
# 計時器每秒計數
|
|||
|
|
timer.start(1000)
|
|||
|
|
# 計時開始
|
|||
|
|
workThread.start()
|
|||
|
|
# 當收到迴圈完畢的訊號時，停止計數
|
|||
|
|
workThread.trigger.connect(timeStop)
|
|||
|
|
|
|||
|
|
def timeStop():
|
|||
|
|
timer.stop()
|
|||
|
|
print("執行結束，耗時：",lcdNumber.value())
|
|||
|
|
global sec
|
|||
|
|
sec=0
|
|||
|
|
|
|||
|
|
if __name__ == "__main__":
|
|||
|
|
app = QApplication(sys.argv)
|
|||
|
|
top = QWidget()
|
|||
|
|
top.resize(300,120)
|
|||
|
|
|
|||
|
|
# 垂直佈局類別QVBoxLayout
|
|||
|
|
layout = QVBoxLayout(top)
|
|||
|
|
# 增加一個顯示面板
|
|||
|
|
lcdNumber = QLCDNumber()
|
|||
|
|
layout.addWidget(lcdNumber)
|
|||
|
|
button = QPushButton("測試")
|
|||
|
|
layout.addWidget(button)
|
|||
|
|
|
|||
|
|
timer = QTimer()
|
|||
|
|
workThread = WorkThread()
|
|||
|
|
|
|||
|
|
button.clicked.connect(work)
|
|||
|
|
# 每次計時結束，觸發countTime
|
|||
|
|
timer.timeout.connect(countTime)
|
|||
|
|
|
|||
|
|
top.show()
|
|||
|
|
sys.exit(app.exec_())
|