![]() This might seem like overkill for 2 files, but as your projects get larger the advantages become clearer! The QRC file ![]() First we need to define our QRC file and add our resources to it. Now the application is working as expected, we'll switch to using the QResource system to load these two files. With the icons in the same folder as the script, they are now visible. Run the application again and you'll see the icons as expected. These icons are from the Fugue icon set by Yusuke Kamiyamane. Without the icons available, nothing is shown.Äownload and place the animal-penguin.png and animal-monkey.png icons in the same folder as the script, and run it again. If you've had issues when packaging your applications, this will be familiar to you. This is what happens when you create QIcon() objects with files that cannot be found - they are simply omitted. Run it and you'll see the window appear with the button, but with no icons visible. Save this file to your computer as app.py. Self.button = QtWidgets.QPushButton("My button") The example below shows a single button, which when pressed changes it's icon. However, remember you can package any type of data you like as resources, including data files that your application depends on. To demonstrate how to use the resource system, we'll create a simple application that uses two data files - in this case, two icon image files. You can manage resources through Qt Designer and use the resource library to load icons (and other data) in your apps. Resources are bundled into Python files which can be distributed along with your source code, guaranteeing they will continue to work on other platforms. Thankfully, Qt comes to the rescue with it's resource system. This can get even trickier when packaging applications for cross-platform (Windows, macOS and Linux) use. If you reference data files with paths, your application won't work properly unless the exact same paths are available on the target computer. These data files are separate from the source code of your application but will ultimately need to be packaged and distributed with it in order for it to work.Äistributing data files with applications is a common cause of problems. Usually your interface will need icons for actions, you may want to add illustrations or branding logos, or perhaps your application will need to load data files to pre-populate widgets. Building applications takes more than just code.
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