This document is a collection of Glade3 Python Tutorials. After trying every tutorial I could find on the interweb and most are very dated I finally figured out the basics for getting a Glade3 Python GUI to work and it was so simple I smacked my head on the table for all the problems I had when trying to follow the other tutorials. This is an almost never seen on the web, tutorials without any ads… I hate tutorials written or stolen solely for profit! The following tutorials will progress from the simplest thing I can come up with to more advanced.
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The image below shows the windowed Hello World application made in this tutorial. Each time the button is clicked, the total number of button clicks is updated and displayed in the window. The tutorial demonstrates the use of a button and text label and how to get a handle or pointer to the text label in order to change its text. See the full GTK3 tutorial index.
The steps show how to create a new project from template files, design the GUI window in Glade, write the application C code and build the project.
The template files include:. When the project is built the executable file name will now be named hello. Although GTK has a method of packing widgets in a window, we will use a fixed grid in this tutorial. Users of MS Visual development tools will be familiar with placing widgets on a grid in a window. Click the fixed grid icon in the left pane of the Glade window under Containers and then click the main window to place the grid.
This project uses two text labels — one to display the hello world text and a second label to display the number of times the button is clicked. Click the Label item in the left pane of Glade under the Control and Display section. Click the main window on the grid to place the label. Size the label by changing Height request under the Common tab in the right pane of glade to In the right pane, with the label selected, click the General tab.
In the left pane of Glade, click the Button icon under the Control and Display section. Click on the main window grid to place the button. Change the height of the button to 30 in the same place that the height of the text was changed right pane, Common tab, Height request field. Place the button under the second label.
Change the window title in the Title field to Hello World. When the button is clicked, it will emit a signal. We need to attach a function to the signal so that the function will be called when the button is clicked. Click the button in Glade to select it and then click the Signals tab in the right pane of the Glade editor. Click the text under the Handler heading next to clicked to select it and then a second time to start editing it. Press the down arrow key to select it and then press the Enter key twice to make the change.
Open the main. We need a pointer to each of the labels in the project so that we can get hold of the labels to change their text. In this simple project, two global pointers are defined at the top of the C file. Finally we must add a function that writes text to the first label and increments a count in the second label when it is clicked. This function must have the same name as the signal handler function set for the button in Glade.
Open the template directory in a terminal window and build the project using the make file by entering the make command. The project can be run by either double-clicking the hello icon after navigating to the project folder using a file manager or from within the terminal window by entering:. The Hello World window should open. This tutorial was developed on a Linux Mint Update 14 October This tutorial was tested on a Linux Mint See the video near the top of this article that shows how to build the GUI window using the new Glade which has a different layout.
This is a extreme useful tutorial for begginers, thanks a lot for doing it. I have spent many hours trying to learn how to connect a UI with a C program, with no success until I found your tutorials. I have learned more in the past few days, than I did over the past few months with other tutorials. Thank you. Hi, thanks. But why are we using Glade here?
Can we not just use gtk? Do bigger gtk application developers also use glade with gtk? Also in the glade interface designer, I find it tough to place the widgets because I do not see the boundaries of other widgets. Is there any solution for this? Also the editor in the glade interface designer is not an accurate representation of how the window looks like. I think that this also has to do with packing.
The designers of Glade probably assume that most users are going to use boxes to pack widgets. It then does not matter what size the window is during design, as long as the widgets are in the correct positions. The answer is in GTK packing which takes some getting used to.
I will explain more on this and update the packing tutorial. You are free to use plain GTK function calls in your code or use Glade.
I wanted to use Glade for my own small applications to get away from the tedious work of trying to place widgets within C code. I could not find many tutorials on using Glade with GTK C code, so I started doing my own research and publishing the results here. I am not sure whether Glade is being used with bigger GTK applications and am trying to get a feel for this myself.
Of the few smaller projects that I have looked at, some used Glade, but in all of them the Glade file would not even open in newer versions of Glade. The list of topics on this site, which I discovered after much search as regards Glade, got it immediately on my subscription feed. Ads are disabled, too, if you decide to start getting revenue here. All I can do is echo the comments before mine — at last! I compiled it using gcc -o hello test. I have the same problem, but using the makefile.
Thanks for your help, im having a little trobule, can someone lend me a hand? Im getting this error while im trying to run the main window. You mean totally broken. Sorry to resurrect a dead body, but I think there was an important oversight. Failure to do this connection will lead to mem leaks because the window is effectively destroyed but not the program, wich continues running.
There is a point where I request you to change pointer declaration styles — to avoid immense confusion to others :.
But be careful not to declare multiple variables in a single statement. Hi, I started GTK 3 development with this tuturial!! Do you have any recomendation??? Your email address will not be published.
Application Created in the GTK 3 C Code Hello World Tutorial The tutorial demonstrates the use of a button and text label and how to get a handle or pointer to the text label in order to change its text.
The template files include: A main. Placing a Fixed Grid in Glade Without the fixed grid, buttons and text labels could not be placed. Placing a label in Glade 2. Changing Glade Label Height 2. Second Glade Label 2. Placing a Glade Button 2. Changing Glade Window Settings 2. Build and Run the Project Open the template directory in a terminal window and build the project using the make file by entering the make command.
My system: Ubuntu Thanks again, and if can, please post more! Thanks for your feedback. Glad to hear that the tutorials are helping people. Thanks John. Glad to hear that you found the tutorial useful. I had the same problem and seem to have it working. In the. Once I did, it runs fine. I am a GTK beginner and I found your tutorial very nice. The Glade intro is excellent. Leave a Reply Cancel reply Your email address will not be published. Leave this field empty.
Glade3 Gtk Python Tutorial
The Gtk. Builder class offers you the opportunity to design user interfaces without writing a single line of code. This is possible through describing the interface by an XML file and then loading the XML description at runtime and create the objects automatically, which the Builder class does for you. There is still code required for handling interface changes triggered by the user, but Gtk.
Glade - A User Interface Designer
The image below shows the windowed Hello World application made in this tutorial. Each time the button is clicked, the total number of button clicks is updated and displayed in the window. The tutorial demonstrates the use of a button and text label and how to get a handle or pointer to the text label in order to change its text. See the full GTK3 tutorial index. The steps show how to create a new project from template files, design the GUI window in Glade, write the application C code and build the project.
GTK 3 C Code Hello World Tutorial using Glade 3