[Lazarus] Linux apps and gtk version choosing

[Kostas Michalopoulos]

On 2/26/23 14:25, Mgr. Janusz Chmiel via lazarus wrote:
> Where to change GTK version from 2.0 to 3.0?
> 
> IIs it possible from Lazarus IDE, Form window or only from source code 
> of app?

Project -> Project Options -> Additions and Overrides (under Compiler 
Options near the bottom of the sidebar on the left) -> Click Set "LCL 
WidgetType" -> Pick one of the available options (not that not all 
options will work, but gtk2 and gtk3 should work and qt5 will work if 
you have libqt5pas installed).

Kostas