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List:       pykde
Subject:    Re: [PyQt] QCheckBox problem
From:       Doug Hackworth <doug.hackworth () vanderbilt ! edu>
Date:       2009-01-05 17:57:16
Message-ID: 496249FC.7010900 () vanderbilt ! edu
[Download RAW message or body]

> If that isn't the problem, it'd help someone to figure it out if you 
> could provide a complete small executable program that exhibits the 
> problem behavior.

Attached is an example program which illustrates the problem I'm having.  Again, 
the QCheckBox seems to work (its isChecked() method returns the correct thing, 
for example), but there is no action from the slot function that I have 
(ostensibly) connected to its toggled() signal.

I'm not a Qt or PyQt expert yet, so perhaps I've overlooked something 
elementary.  Any insights from this list's collected wisdome would be quite welcome.

Many thanks,
Doug

["Foobar.py" (text/x-python)]

#! /usr/bin/python

import sys

from PyQt4 import QtCore, QtGui

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(QtCore.QSize(QtCore.QRect(0,0,433,181).size()).expandedTo(MainWindow.minimumSizeHint()))
  MainWindow.setBaseSize(QtCore.QSize(0,0))

        self.centralwidget = QtGui.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")

        self.buttonSubmit = QtGui.QPushButton(self.centralwidget)
        self.buttonSubmit.setGeometry(QtCore.QRect(210,120,101,27))
        self.buttonSubmit.setObjectName("buttonSubmit")

        self.buttonQuit = QtGui.QPushButton(self.centralwidget)
        self.buttonQuit.setGeometry(QtCore.QRect(330,120,80,27))
        self.buttonQuit.setObjectName("buttonQuit")

        self.textFilename = QtGui.QLineEdit(self.centralwidget)
        self.textFilename.setEnabled(False)
        self.textFilename.setGeometry(QtCore.QRect(30,70,340,29))
        self.textFilename.setObjectName("textFilename")

        self.checkAddFile = QtGui.QCheckBox(self.centralwidget)
        self.checkAddFile.setGeometry(QtCore.QRect(30,30,251,23))
        self.checkAddFile.setObjectName("checkAddFile")

        MainWindow.setCentralWidget(self.centralwidget)

        self.statusbar = QtGui.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QObject.connect(self.buttonQuit,QtCore.SIGNAL("clicked()"),MainWindow.close)
  QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        MainWindow.setWindowTitle(QtGui.QApplication.translate("MainWindow", \
                "foobar", None, QtGui.QApplication.UnicodeUTF8))
        self.buttonSubmit.setText(QtGui.QApplication.translate("MainWindow", "Do \
                Things", None, QtGui.QApplication.UnicodeUTF8))
        self.buttonQuit.setText(QtGui.QApplication.translate("MainWindow", "Quit", \
                None, QtGui.QApplication.UnicodeUTF8))
        self.checkAddFile.setText(QtGui.QApplication.translate("MainWindow", "This is \
a checkbox:", None, QtGui.QApplication.UnicodeUTF8))


class FoobarApplication(QtGui.QMainWindow):
    def __init__(self, parent=None):
        # Set up the GUI from the Qt Designer code...
        QtGui.QWidget.__init__(self, parent)
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)
        
        # Connect signals and slots...
        # Submit button
        QtCore.QObject.connect(self.ui.buttonSubmit, QtCore.SIGNAL("clicked()"), \
self.Submit)  
        # Checkbox
        QtCore.QObject.connect(self.ui.checkAddFile, QtCore.SIGNAL("toggled()"), \
self.CheckMultiMask)  
    
    # Slot for Submit button
    def Submit(self):
        filename = str(self.ui.textFilename.text())
        fAddFile = self.ui.checkAddFile.isChecked()
        sys.stdout.write('%s ... %s \n'  % (fAddFile, filename))
    
    # Slot for checkbox
    def CheckMultiMask(self):
        sys.stdout.write("multimask toggleded\n")
        if (self.ui.checkMultiMask.isChecked()):
            sys.stdout.write("it's checked\n")
            self.ui.textFilename.setEnabled(True)
        

if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    myapp = FoobarApplication()
    myapp.show()
    sys.exit(app.exec_())



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