On 06/28/2016 05:15 AM, captaindet wrote:

playing with the new 3.20 GTK packages (win32) from the GtkD website i
ran into 2 issues.

1) the theme is very different from 3.18 and does not fit in at all - it
rather looks like a Mac theme. it has very rounded corners and there is
no app icon in the upper left corner of the window. maybe this package
is lacking the windows theme altogether? maybe a small config entry/file
is missing?

It currently uses the default theme "adwaita", there is an win32 theme
that comes with the installer, but that also looks out of place at least
on windows 10.

2) as the GTK developers made the inexplicable decision to give Notebook
widgets (and their tabs) a hard-coded white background, instead of the
typical transparent/fall-through-to-system color, i am using following
fix for my programs:

enum myCSS = q{
    GtkNotebook {
        background-color: #e9e9e9;
    }
    GtkNotebook tab {
        background-color: #d6d6d6;
    }
};
...
int main(string[] args){
...
    import gtk.CssProvider;
    auto styleProvider = new CssProvider;
    styleProvider.loadFromData(myCSS);
    import gdk.Screen;
    import gtk.StyleContext;
    StyleContext.addProviderForScreen( Screen.getDefault(),
styleProvider, 800);

(i then use the Builder to load my GUI from glade files.)

unfortunately, this fix does not work anymore with the 3.20 package, the
background stays white!

The css may have changed in the new release. i couldn't find GtkNotebook
in the default css at least.

Try setting the "GTK_DEBUG" environment variable to "interactive", this
will open an extra window that will allow you change the css on the fly.

also, not sure how serious this is, i get a new warning that i have not
seen before:

GLib-GObject-WARNING **: attempt to override closure->va_marshal
(63c488b0) with new marshal (66925ea8)

thanks
/det

Seems to be a bug in the current GTK version.

On 2016-07-01 08:34, Mike Wey wrote:

The css may have changed in the new release. i couldn't find GtkNotebook
in the default css at least.

Try setting the "GTK_DEBUG" environment variable to "interactive", this
will open an extra window that will allow you change the css on the fly.

unfortunately, this did not work. the interactive debugger did not open.
reading the docs on gnome.org i also tried ctrl-shift-i and ctrl-shift-d

• to no avail.

 GtkNotebook {
     background-color: #e9e9e9;
 }

just for future reference: seems like css node GtkNotebook has been
deprecated/removed (i think starting with 3.19.7). 'notebook' is the
replacement, but for whatever reason its background-color does not
propagate down... to change the main child area from a white background
to e.g. a gray one, this works:

notebook stack {

 background-color: #ededed;

}

/det