how to connect slider to a function in PyQt4?

pyqt, python

Solution

It should be `self.horizontalSlider.value()`, since `value` is a callable. However, the `QHorizontalSlider.valueChanged` signal also emits the value of the slider, so you can change your `changeText` method as follows:

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

Also consider using the new style signal-slot mechanisms: http://pyqt.sourceforge.net/Docs/PyQt4/new_style_signals_slots.html

Problem

Im trying to translate a value of a slider to a function and display the value of this function in a lineEdit widget. Here is my code: ``` 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_()) ``` I want to retrieve the value of a slider and assign it to self.z and in this case i'd like to know what am i supposed to write instead of this: self.z = self.horizontalSlider.value

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