GTK3 Interface

https://upload.wikimedia.org/wikipedia/commons/thumb/7/71/GTK_logo.svg/60px-GTK_logo.svg.png

This article applies to GTK+ Widgetsets only.

See also: Multiplatform Programming Guide

Started as of Lazarus 1.1 r41811

Currently it's in alpha status, and if you want to test it, you must uncomment the USEGTK3ALPHA define in lcl/interfaces/gtk3/gtk3defines.inc.

MINIMUM REQUIREMENTS

• Gtk3 v 3.24
• **21.03.2025 - gtk3 is not alpha state anymore :) ** (https://gitlab.com/freepascal.org/lazarus/lazarus/-/commit/287fbaaa1a56d37458146e624d1dd9b6c4debddd )

IDE can be built and run against gtk3 under x11. Designer works, basic coding works. There are still a lot of TODO's and bugs of course.

[[Gtk+3|Current bindings]] (21.03.2025) are 3.22.

• glib2 2.34
• cairo 1.10
• pango 1.30

From the Free Pascal wiki, page "GTK3 Interface", as the Internet Archive kept it on 2026-01-04, last changed on 2025-03-21. Copyright stays with the author who wrote it, according to the old wiki's Licensing page. If you have concerns about this material, message the admin.