A window showing information about the application.
<picture> <source srcset="about-window-dark.png" media="(prefers-color-scheme: dark)"> <img src="about-window.png" alt="about-window"> </picture>
An about window is typically opened when the user activates the `About …` item in the application's primary menu. All parts of the window are optional.
`AdwAboutWindow` prominently displays the application's icon, name, developer name and version. They can be set with the [ property@AboutWindow:application-icon], [property@AboutWindow:application-name], [property@AboutWindow:developer-name] and [ property@AboutWindow:version] respectively.
`AdwAboutWindow` provides a way for applications to display their release notes, set with the [property@AboutWindow:release-notes] property.
Release notes are formatted the same way as AppStream descriptions.
The supported formatting options are:
* Paragraph (`<p>`) * Ordered list (`<ol>`), with list items (`<li>`) * Unordered list (`<ul>`), with list items (`<li>`)
Within paragraphs and list items, emphasis (`<em>`) and inline code (`<code>`) text styles are supported. The emphasis is rendered in italic, while inline code is shown in a monospaced font.
Any text outside paragraphs or list items is ignored.
Nested lists are not supported.
Only one version can be shown at a time. By default, the displayed version number matches [property@AboutWindow:version]. Use [ property@AboutWindow:release-notes-version] to override it.
The Details page displays the application comments and links.
The comments can be set with the [property@AboutWindow:comments] property. Unlike [[email protected]:comments], this string can be long and detailed. It can also contain links and Pango markup.
To set the application website, use [property@AboutWindow:website]. To add extra links below the website, use [ [email protected]_link].
If the Details page doesn't have any other content besides website, the website will be displayed on the main page instead.
`AdwAboutWindow` displays the following two links on the main page:
* Support Questions, set with the [property@AboutWindow:support-url] property, * Report an Issue, set with the [ property@AboutWindow:issue-url] property.
Additionally, applications can provide debugging information. It will be shown separately on the Troubleshooting page. Use the [ property@AboutWindow:debug-info] property to specify it.
It's intended to be attached to issue reports when reporting issues against the application. As such, it cannot contain markup or links.
`AdwAboutWindow` provides a quick way to save debug information to a file. When saving, [property@AboutWindow:debug-info-filename] would be used as the suggested filename.
The Credits page has the following default sections:
* Developers, set with the [property@AboutWindow:developers] property, * Designers, set with the [property@AboutWindow:designers] property, * Artists, set with the [property@AboutWindow:artists] property, * Documenters, set with the [property@AboutWindow:documenters] property, * Translators, set with the [property@AboutWindow:translator-credits] property.
When setting translator credits, use the strings `"translator-credits"` or `"translator_credits"` and mark them as translatable.
The default sections that don't contain any names won't be displayed.
The Credits page can also contain an arbitrary number of extra sections below the default ones. Use [ [email protected]_credit_section] to add them.
The Acknowledgements page can be used to acknowledge additional people and organizations for their non-development contributions. Use [ [email protected]_acknowledgement_section] to add sections to it. For example, it can be used to list backers in a crowdfunded project or to give special thanks.
Each of the people or organizations can have an email address or a website specified. To add a email address, use a string like `Edgar Allan Poe mailto:[email protected]`. To specify a website with a title, use a string like `The GNOME Project https://www.gnome.org`:
<picture> <source srcset="about-window-credits-dark.png" media="(prefers-color-scheme: dark)"> <img src="about-window-credits.png" alt="about-window-credits"> </picture>
The Legal page displays the copyright and licensing information for the application and other modules.
The copyright string is set with the [property@AboutWindow:copyright] property and should be a short string of one or two lines, for example: `© 2022 Example`.
Licensing information can be quickly set from a list of known licenses with the [property@AboutWindow:license-type] property. If the application's license is not in the list, [property@AboutWindow:license] can be used instead.
To add information about other modules, such as application dependencies or data, use [[email protected]_legal_section].
To make constructing an `AdwAboutWindow` as convenient as possible, you can use the function [func@show_about_window] which constructs and shows a window.
```c static void show_about (GtkApplication *app) { const char *developers[] = { "Angela Avery", NULL };
const char *designers[] = { "GNOME Design Team", NULL };
adw_show_about_window (gtk_application_get_active_window (app), "application-name", _("Example"), "application-icon", "org.example.App", "version", "1.2.3", "copyright", "© 2022 Angela Avery", "issue-url", "https://gitlab.gnome.org/example/example/-/issues/new", "license-type", GTK_LICENSE_GPL_3_0, "developers", developers, "designers", designers, "translator-credits", _("translator-credits"), NULL); } ```
`AdwAboutWindow` has a main CSS node with the name `window` and the style class `.about`.