why signal emit failed in pyside?

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0

This is my code:

from PySide import QtCore, QtGui
import sys
import time

class TestThread(QtCore.QThread):

    def __init__(self):
        self.finished_flag = False
        super(TestThread, self).__init__()

    def finished(self):
        print('==========finished function is invoked!=======================')
        self.finished_flag = True

    def run(self):
        while(True): 
            print('thread is running...') 
            time.sleep(1)            
            if self.finished_flag:
                print('thread exist!')
                break


class TestDialog(QtGui.QDialog):
    ForceTermimateSignal = QtCore.Signal()

    def done(self, code):
        print('================dialog done!==================')
        self.ForceTermimateSignal.emit()
        super(TestDialog, self).done(code)


if __name__ == '__main__':
    app = QtGui.QApplication(sys.argv)

    dlg = TestDialog()
    testThread = TestThread()

    dlg.ForceTermimateSignal.connect(testThread.finished)

    testThread.start()

    dlg.exec_()

    if testThread.isFinished():
        print('thread finished')
    else:
        print('thread is still running!')
        testThread.wait()

This is the result when run the above code and then close the dialog:

thread is running...
thread is running...
thread is running...
thread is running...
================dialog done!==================
thread is still running!
thread is running...
thread is running...
thread is running...

so I want to know: why emitting ForceTermimateSignal of dlg can not invoke 'finished' function of object testThread?

asked 36 secs ago

lengxuehx

48

why signal emit failed in pyside?