Re: Setting the background color of a GtkEntry

[Andreas Stricker <andreas stricker fela ch>]

Michal Kepien schrieb:
> > The white part of a text-accepting widget uses the "base" color, not
> > the "bg" color.  The only way I know to set that is with a style:
> >
> > style "myEntry"
> > {
> >    base[NORMAL] = "#ff0000"    # or whatever
> > }
> > class "GtkEntry" style "myEntry"
> >
> > You can load this setting by placing that text in a file called "foo"
> > and then calling gtk_rc_parse("foo"), or you can put it in a string
> > called "bar" and call gtk_rc_parse_string(bar).
>
>
> This is some progress... However, what I want to achieve is to dynamically
> change the background color without reopening the window (what I want to use the
> color change for is validating input - if something's wrong then the entry goes
> red, if the entry gets corrected it should be white again). Is it possible to
> force a refresh and instantly change the background color of the GtkEntry? When
> I use gtk_rc_parse_string() in the callback, it works, but the entry's color is
> changed after i TAB a few entries forward.

You can change the style direct over the style interface. The
function gtk_widget_modify_style() should do the trick:

http://www.gtk.org/api/2.6/gtk/GtkWidget.html#gtk-widget-modify-style
http://www.gtk.org/api/2.6/gtk/gtk-Resource-Files.html
http://www.gtk.org/api/2.6/gtk/GtkStyle.html

The style change should apply immediately AFAIK.

Cheers,

Andy