一个简单的进度条

from PySide2.QtWidgets import QApplication, QWidget, QPushButton, QProgressBar, QVBoxLayout
from PySide2.QtCore import QThread, Slot, Signal
import time

class myThread(QThread):
    change_value = Signal(int)

    def run(self):
        ct = 0
        while ct < 100:
            ct += 1
            time.sleep(0.3)
            self.change_value.emit(ct)


class MyWidget(QWidget):
    def __init__(self):
        super(MyWidget, self).__init__()
        self.setGeometry( 500, 500, 650, 450)
        self.setWindowTitle("My Progress bar")
        self.initUI()
        self.show()

    def initUI(self):
        self.pgb = QProgressBar()
        self.startButn = QPushButton("Start")
        self.startButn.clicked.connect(self.startProgressBar)

        vbox = QVBoxLayout()
        vbox.addWidget(self.pgb)
        vbox.addWidget(self.startButn)
        self.setLayout(vbox)

    def startProgressBar(self):
        self.thread = myThread()
        self.thread.change_value.connect(self.setProgressVal)
        self.thread.start()

    def setProgressVal(self, val):
        self.pgb.setValue(val)



if __name__ == "__main__":
    app = QApplication([])
    widget = MyWidget()
    #widget.show()

    app.exit(app.exec_())

标签：__,pgb,进度条,一个,self,vbox,简单,def,ct
来源： https://www.cnblogs.com/TadGuo/p/15831618.html