Select the folder above your source folder for "Create in", and provide the name of your source folder as the project name. You can delete any files created, except the. Select the location.
To add resources to your existing project, select the "Edit" view on the left hand panel. You will see a file tree browser in the left hand panel. Right-click on the folder and choose "Add existing files…" and add your existing. The Edit view, showing the added files. If you close and re-open Qt Creator the files will be there. Once you have added the QRC file to the file listing you should be able to expand the file as if it were a folder, and browser the resources within.
You can also add and remove resources using this interface. Once the Resource file is loaded you will be able to access it from the designer properties. The screenshot below shows the Designer with our counter app open, and the increment button selected. The icon for the button can be chosen by clicking the small black down arrow and selecting "Choose Resource…".
The Resource chooser window that appears allows you to pick icons from the resource file s in the project to use in your UI. Selecting the icons from the resource file in this way ensures that they will always work, as long as you compile and bundle the compiled resource file with your app. For example, if you run the following You can check your compiled UI file e. You may be wondering when or even whether you should use the QResource system.
The main advantage comes when packaging and distributing your applications. Because your data is bundled with the Python source code, you eliminate all the potential path problems and guarantee your data files will be accessible to your app. You can also use Qt Designer to manage and group icons for your application. Whether this trade-off is worth it for your project is up to you, but if you plan to distribute your application to other people it almost always is. If you found this tutorial helpful, please consider sharing it with your network.
Your support helps me to continue writing these tutorials. The QResource System was published in tutorials on November 16, updated November 02, and tagged qt pyqt pyqt5 python qt5. If your job involves generating PDF reports, invoices, etc. But you can also use these libraries as the basic of simple GUI … More.
The example application 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.
The example below shows a single button, which when pressed changes it's icon. QIcon "animal-penguin. QIcon "animal-monkey. They are also known as components in other frameworks. To make a layout in Qt, you have to use a generic QWidget object because the window will display one widget at a time. There are other layout types that can be used, such as VBoxLayout to lay out widgets in a vertical direction, or you can use an HBoxLayout for a horizontal layout. Now that we've practiced with a simple Hello World app, let's build a desktop app for freelance developers.
The window is going to show a table of weekly earnings and allow the freelancer to calculate which marginal tax bracket they fall under by using a dialog box. You can view the full source code for this app here. We'll also use the grid layout again. This is a good default, but for more complex desktop apps, you will want to evaluate the other layouts that are possible with Qt. This will set the screen widget as the one to display, the title and size of the window, and show it.
The app. Both of the labels are in the same row, 0. The yearly income label is in the first column with the tax rate label is in the second column. The first thing to note is that we get two values which we'll have to unpack after calling QInputDialog. We supplied a min and max value to constrain the value. Notice that we are updating the two labels on the screen with updated values from the input dialog.
QInputDialog has multiple static methods to ask for particular types of values from the user. Let's begin by setting the number of columns that will be displayed and their labels:.
Then we'll set the number of rows that will be displayed. We'll also calculate the sum and store it in the last column of the row:.
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