Re: how to programmatically set colors of a GtkTextView

[Carlo <carlo-ag libero it>]

Boncek, John ha scritto lo scorso 10/02/2005 18.36:
> I'm trying to set the text color and background color of a GtkTextView.
> I've read Havoc Pennington's mini-FAQ.  He gives the following example of
> how to set a color in GTK 2.0:
>
>   GdkColor color;
>
>   gdk_color_parse ("red", &color);
>
>   gtk_widget_modify_fg (widget, GTK_STATE_NORMAL, &color);
>
> But this doesn't seem to work in this case, using GTK 2.2.4.  Here's the
> code used, with silly colors just to make it obvious as to whether it's
> working.
>
>         // create the TextView
>         m_pTextView = gtk_text_view_new();
>         
>         GdkColor color;
>
>         gdk_color_parse ("red", &color);
>
>         gtk_widget_modify_fg (m_pTextView, GTK_STATE_NORMAL, &color);
>
>         gdk_color_parse ("blue", &color);
>
>         gtk_widget_modify_bg (m_pTextView, GTK_STATE_NORMAL, &color);
>
> The text view does display and accepts keyboard input but the colors
> displayed are black-on-white.  The mini-FAQ also says that some widgets
> use the "text" color instead of the foreground color but doesn't say how
> to set that.
I'm not sure it's exactly what you need, but generally I use tags to
accomplish this task; you can define, once for all, tags related to your
textbuffer:

gtk_text_buffer_create_tag (text_buffer,
                            "text",
                            "editable", FALSE,
                            "foreground", "blue",
                            "background", "yellow",
                            "weight", "550",
                            NULL);

and then use them each time you need with:

gtk_text_buffer_insert_with_tags_by_name (text_buffer,
                                          & here,
                                          buffer,
                                          -1,
                                          "text",
                                          NULL);

HTH,
Carlo