4

我试图将滑块的值转换为函数并在 lineEdit 小部件中显示该函数的值。这是我的代码：

class MyForma1(object):
    def AddWidgets1(self, Form):
        Form.setObjectName(_fromUtf8("Form"))
        Form.resize(579, 542)
        self.horizontalSlider = QtGui.QSlider(Form)
        self.horizontalSlider.setGeometry(QtCore.QRect(120, 380, 321, 31))
        self.horizontalSlider.setOrientation(QtCore.Qt.Horizontal)
        self.horizontalSlider.setInvertedAppearance(False)
        self.horizontalSlider.setInvertedControls(False)
        self.horizontalSlider.setObjectName(_fromUtf8("horizontalSlider"))
        self.lineEdit = QtGui.QLineEdit(Form)
        self.lineEdit.setGeometry(QtCore.QRect(112, 280, 331, 20))
        self.lineEdit.setObjectName(_fromUtf8("lineEdit"))

        self.retranslateUi(Form)
        QtCore.QObject.connect(self.horizontalSlider, QtCore.SIGNAL('valueChanged(int)'), Form.changeText)

    def retranslateUi(self, Form):
        Form.setWindowTitle(_translate("Form", "Form", None))

class MyForma2(QtGui.QDialog, MyForma1):
    def __init__(self, z11=0):
        QtGui.QDialog.__init__(self)
        self.AddWidgets1(self)
        self.z = z11

    def myfunc1(self):
        self.z = self.horizontalSlider.value


    def changeText(self):
        self.myfunc1()
        self.lineEdit.setText(str(self.z))

if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    Forma = MyForma2()
    Forma.show()
    sys.exit(app.exec_())

我想检索滑块的值并将其分配给self.z，在这种情况下，我想知道我应该写什么而不是这个：self.z = self.horizo​​ntalSlider.value

4

1 回答 1

4

它应该是self.horizontalSlider.value()，因为value它是可调用的。但是，信号也会发出滑块的值，因此您可以按如下方式QHorizontalSlider.valueChanged更改方法：changeText

def changeText(self, value):
    self.z = value
    self.lineEdit.setText(str(self.z))

还可以考虑使用新风格的信号槽机制： http: //pyqt.sourceforge.net/Docs/PyQt4/new_style_signals_slots.html

于 2013-08-03T11:29:38.330 回答