Junior wroteI know, just wanted to test, but as you said, does not work.
It's all right
It works here, you must have installed at least gtk3 3.6.4. It's not clever idea to build ide with gtk3 since it will probably crash, but you can create simple project with form, buttons, edits and rebuild it with gtk3 widgetset. That will work ONLY if you uncomment define USEGTK3ALPHA in lcl/interfaces/gtk3/gtk3defines.inc. Most of controls (handles) works except trayicon, splitter ...also painting is in really beginning stage, but eg. TLabel works (at least while it's transparent).
Stuff like TSpeedButton doesn't work because gtk3themes aren't implemented and caret also does not exist yet.
Also I've created wiki about gtk3 which will be filled with informations. http://wiki.lazarus.freepascal.org/index.php/GTK3_Interface
zeljko
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