Updating progress bar using thread

Progress bars are actively used in applications to indicate that a task is working in the background. Threads also do the same; threads too work in the background and do their assigned task. Let's see how the progress bar and threads can be linked.

In this recipe, we will be displaying a progress bar that is being updated using threads. The value in the progress bar will be updated through a running thread.

How to do it...

To associate a progress bar with a thread and to update the progress bar interactively via the thread, use the following steps:

1. Let's create an application based on the Dialog without Buttons template.

2. Add QLabel and QProgressBar widgets to the form by dragging...