label displays sum of two QSpinBox (Python + Pyside)?

问题

Could someone help me fix the code to display in the total column the sum of the two spinners 'Amount + Counter'. Currently the total label just displays the value of a single spinner. I need it to display the sum of both spinners. Any additional fixes or notes are welcome as I'm new to python.

Thank you very much.

BELOW IS THE FIXED WORKING CODE

#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys
from PySide import QtGui, QtCore

class Example(QtGui.QWidget):

    def __init__(self):
        super(Example, self).__init__()

        self.initUI()

    def initUI(self):

        #Add all GUI Elements to Class
        self.amountLabel = QtGui.QLabel('Amount')
        self.counterLabel = QtGui.QLabel('Counter')
        self.totalLabel = QtGui.QLabel('Total')
        self.amountSpin = QtGui.QSpinBox()
        self.counterSpin = QtGui.QSpinBox()

        self.totalOutput = QtGui.QLabel('0')

        grid = QtGui.QGridLayout()
        grid.setSpacing(0)

        grid.addWidget(self.amountLabel, 3, 0)
        grid.addWidget(self.counterLabel, 3, 1)
        grid.addWidget(self.totalLabel, 3, 2)

        grid.addWidget(self.amountSpin, 4, 0)
        grid.addWidget(self.counterSpin, 4, 1)
        grid.addWidget(self.totalOutput, 4, 2)

        self.setLayout(grid)

        # ACTIONS
        self.amountSpin.valueChanged[str].connect(self.onChanged)
        self.counterSpin.valueChanged[str].connect(self.onChanged)

        self.setGeometry(800, 400, 250, 80)
        self.setWindowTitle('Simple Calculator')
        self.show()

    def onChanged(self, val):
        #we ignore the val and just get the values directly from our spinboxes
        sum = self.amountSpin.value() + self.counterSpin.value()
        #and display them
        self.totalOutput.setText(str(sum))
        self.totalOutput.adjustSize()

def main():

    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())


if __name__ == '__main__':
    main()

回答1:

Try this:

#Add all GUI Elements to Class
self.amountLabel = QtGui.QLabel('Amount')
self.counterLabel = QtGui.QLabel('Counter')
self.totalLabel = QtGui.QLabel('Total')
self.amountSpin = QtGui.QSpinBox()
self.counterSpin = QtGui.QSpinBox()

[...]

# ACTIONS
self.amountSpin.valueChanged[str].connect(self.onChanged)
self.counterSpin.valueChanged[str].connect(self.onChanged)

[...]

def onChanged(self, val):
    #we ignore the val and just get the values directly from our spinboxes
    sum = self.amountSpin.Value + self.counterSpin.Value
    #and display them
    self.totalOutput.setText(QString(sum))
    self.totalOutput.adjustSize()

来源：https://stackoverflow.com/questions/20898897/label-displays-sum-of-two-qspinbox-python-pyside

标签

python

pyqt

pyside

qlabel

qspinbox