Re: set custom entry background?

[Allin Cottrell <cottrell wfu edu>]

On Sun, 15 Nov 2015, Allin Cottrell wrote:

> On Mon, 16 Nov 2015, Stefan Salewski wrote:
>
> > On Sun, 2015-11-15 at 14:32 -0500, Allin Cottrell wrote:
> > > I'm trying to set a custom background for a GtkEntry
> >
> > I think you have to use CSS -- unfortunately that is some work and I can
> > not provide an example yet. See
> >
> > https://developer.gnome.org/gtk3/stable/GtkWidget.html#gtk-widget-overri
> > de-background-color
>
> Thanks. I've tried the CSS approach: that is, create a custom 
> GtkCssProvider and feed it a suitable snippet of CSS inline. This 
> works to change the background color OK.

For reference, here's CSS-based code that works to change the 
selected-state background:

void entry_alert (GtkWidget *entry)
{
    GtkCssProvider *prov;
    GtkStyleContext *context;
    const gchar *snippet =
        "GtkEntry:selected {\n"
        "background-color: #ff0000;\n"
        "}\n";

    prov = gtk_css_provider_new();
    gtk_css_provider_load_from_data(prov, snippet, -1, NULL);
    context = gtk_widget_get_style_context(entry);
    gtk_style_context_add_provider(context,
         GTK_STYLE_PROVIDER(prov),
         GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
    gtk_widget_grab_focus(entry);
    gtk_editable_select_region(GTK_EDITABLE(entry), 0, -1);
}

But how can I "undo" this? (I mean, make it so that the background 
color for the selected state reverts to what it was before I messed 
with it, for subsequent selections.) That's trivial with the old 
APIs but I have no idea how it can be done now.

--
Allin Cottrell
Department of Economics
Wake Forest University