PyQt - QScrollBar

Question

Dear Stacktoverflow, can you show me an example of how to use a QScrollBar? Thanks.

Answer 1

It will come down to you using the QScrollArea, it is a widget that implements showing something that is larger than the available space. You will not need to use QScrollBar directly. I don't have a PyQt example but there is a C++ example in the QT distribution it is called the "Image Viewer". The object hierarchy will still be the same

Answer 2

>>> import sys
>>> from PyQt4 import QtCore, QtGui
>>> app = QtGui.QApplication(sys.argv)
>>> sb = QtGui.QScrollBar()
>>> sb.setMinimum(0)
>>> sb.setMaximum(100)
>>> def on_slider_moved(value): print "new slider position: %i" % (value, )
>>> sb.connect(sb, QtCore.SIGNAL("sliderMoved(int)"), on_slider_moved)
>>> sb.show()
>>> app.exec_()

Now, when you move the slider (you might have to resize the window), you'll see the slider position printed to the terminal as you the handle.

Answer 3

In the PyQT source code distribution, look at the file:

examples/widgets/sliders.pyw

Or there is a minimal example here (I guess I shouldn't copy paste because of potential copyright issues)