I have the following pyqtmain.py:
#!/usr/bin/python3
import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from pyqtMeasThread import *


class MainWindow(QMainWindow):
def __init__(self, parent=None):
self.qt_app = QApplication(sys.argv)
QMainWindow.__init__(self, parent)

buttonWidget = QWidget()
rsltLabel = QLabel("Result:")
self.rsltFiled = QLineEdit()
self.buttonStart = QPushButton("Start")

verticalLayout = QVBoxLayout(buttonWidget)
verticalLayout.addWidget(rsltLabel)
verticalLayout.addWidget(self.rsltFiled)
verticalLayout.addWidget(self.buttonStart)

butDW = QDockWidget("Control", self)
butDW.setWidget(buttonWidget)
self.addDockWidget(Qt.LeftDockWidgetArea, butDW)

self.mthread = QThread() # New thread to run the Measurement Engine
self.worker = MeasurementEngine() # Measurement Engine Object

self.worker.moveToThread(self.mthread)
self.mthread.finished.connect(self.worker.deleteLa ter) # Cleanup after thread finished

self.worker.measure_msg.connect(self.showRslt)

self.buttonStart.clicked.connect(self.worker.run)

# Everything configured, start the worker thread.
self.mthread.start()

def run(self):
""" Show the window and start the event loop """
self.show()
self.qt_app.exec_() # Start event loop

@pyqtSlot(str)
def showRslt(self, mystr):
self.rsltFiled.setText(mystr)


def main():
win = MainWindow()
win.run()


if __name__ == '__main__':
main()
And another thread script performing the actual measurement:
from PyQt4.QtCore import *
import time

class MeasurementEngine(QObject):
measure_msg = pyqtSignal(str)
def __init__(self):
QObject.__init__(self) # Don't forget to call base class constructor

@pyqtSlot()
def run(self):
self.measure_msg.emit('phase1')
time.sleep(2) # here I would like to make it as an interrupt
self.measure_msg.emit('phase2')
What this code does now is that after the Start button is pressed, the function run in the thread will be executed. However, actually in the function run, there are two phases of the measurement. Right now I used an time delay.
But what I would like to implement actually is that after the 'phase1' measurement is done. A message box will be popped up, and at the same time, the thread will be paused/held. Until the user closed the message box, then the thread function will be resumed. Can someone help me with this? Thanks in advance!


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