How do you connect a QProgressBar with a function?

Question

I'm working on a program and I want to connect a QProgressBar with a function. While the function is in progress, the QProgressBar should count until the function is done. Then the QProgressBar should be done too.

You should maybe accept more answers for questions you've asked in the past. You've only accepted answers on 9% of the questions you've asked. This will not inspire others to help you. — Wes, Feb 16 '12 at 15:20
Read the QProgressBar documentation, it's quite clear on how to use it. https://developer.qt.nokia.com/doc/qt-4.8/qprogressbar.html#details — cmannett85, Feb 16 '12 at 15:25

score 1 · Accepted Answer · answered Feb 26 '12 at 08:02

This sample will give you a simple idea of seeing the progress. By no way this is efficient or elegant. Its a just a working solution i rigged up.

#!/usr/bin/python

import os, sys

from time import sleep

from PyQt4.QtCore import *
from PyQt4.QtGui import *

app = QApplication( sys.argv )

def copyFile() :
    cpBtn.setDisabled( True )
    for i in range( 0, 100 ) :
        # File Copy Code
        # sleep( 0.1 ) is instead of the file copy code
        sleep( 0.1 )
        pb.setValue( i + 1 )
        qApp.processEvents()

    cpBtn.setEnabled( True )
    pb.reset()

fcpDlg = QDialog()

cpBtn = QPushButton( fcpDlg )
cpBtn.setText( "&Copy" )
cpBtn.clicked.connect( copyFile )
cpBtn.setFixedWidth( 72 )

pb = QProgressBar()
pb.setMinimumWidth( 300 )
pb.setRange( 0, 100 )

lyt = QVBoxLayout( fcpDlg )
lyt.addWidget( pb )
lyt.addWidget( cpBtn )

fcpDlg.setLayout( lyt )

fcpDlg.show()

sys.exit( app.exec_() )

How do you connect a QProgressBar with a function?

1 Answers1