Question

我正在尝试将一些参数（循环迭代次数，计数器值等）传递给Qt GUI线程中的run方法。

当我尝试将值传递给run方法时，一切都运行得很好，包括Thread，SIGNAL和SLOT。当我传入一个整数值，例如100，run方法有错误。当在run方法中打印值时，输出是对象存储器地址，例如，＆lt; main 。主题为0x02BC27B0＆gt ;.

我该如何解决这个问题？。

提前感谢您的帮助。

以下是Python代码示例：

#class testThread(QtCore.QThread):
    def __init__(self,val, parent=None):
        QtCore.QThread.__init__(self)
        self.pulseTime = 0.002
        self.counter = 0
        self.icount = 0
        self.timeout = 4
        self.default = 99
        self.val = val
        print self.val
    def run(self):
        self.timer = QtCore.QTimer()
        self.timer.setInterval(1000)
        self.timer.setSingleShot(False)
        self.timer.start()
        self.timer.timeout.connect(self.update_mode)
        self.exec_()

    def update_mode(self):
        self.counter += self.val
        self.emit(QtCore.SIGNAL("int"),self.counter)

    def stop(self):
        self.terminate()

class Main(QtGui.QMainWindow):

    def __init__(self, parent=None):
        QtGui.QMainWindow.__init__(self, parent)
        self.ui = Ui_Main()
        self.ui.setupUi(self)
        self._active = False
        self.val = 100

        self.setupSignals()

    def spinBox_Value(self):
        self.val = self.ui.spinBox.value()

    def startPressed(self):
        self.testThreadCall.start()

        if not self._active:
            self._active = True
            self.ui.pButton_StartStop.setText("Stop")

        else:
            self._active = False
            self.testThreadCall.stop()

        print self._active


    def setupSignals(self):

        print "Val", self.val
        self.testThreadCall = testThread(self, self.val)
        self.testThreadCall.setTerminationEnabled(True)

        QtCore.QObject.connect(self.testThreadCall, QtCore.SIGNAL("int"),self.labelSet)

        self.ui.dopDown.addItems(['Default','Second Set','Third Set'])
        self.ui.dopDown.currentIndexChanged.connect(self.dropDownEvent)

        self.ui.pButton_StartStop.clicked.connect(self.startPressed)

        self.ui.spinBox.valueChanged.connect(self.spinBox_Value)

    def closeEvent(self, event):
        self.testThreadCall.quit()

###if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    window = Main()
    window.show()

    sys.exit(app.exec_())

Answer 1

班级testThread定义为：

class testThread(QtCore.QThread):
    def __init__(self, val, parent=None):
        ...

稍后，您可以像这样创建testThread的实例：

self.testThreadCall = testThread(self, self.val)

因此testThread.val设置为self（=主窗口），testThread.parent设置为self.val。按(self, self.val)替换(self.val, self)可以解决您的问题。

在Python GUI中将数据传递到QThread

1 个答案: