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