gtk: get property

[Gerald via Digitalmars-d-learn]

On Saturday, 5 August 2017 at 15:08:21 UTC, Johnson Jones wrote:
> I am trying to get the handle size of panned. Not sure if I'm 
> doing it right but
>
> [...]

I'm using this in Tilix:

Value handleSize = new Value(0);
paned.styleGetProperty("handle-size", handleSize);