Re: Set the background color in GTK1

[M Santhoff t-online de (Marc Santhoff)]

Am Mo, den 12.04.2004 schrieb Kevin DeKorte um 22:42:
> Peter,

I'm not, but hi Kevin!

> Didn't seem to do it
>
> I do this to get the style
>
>       style = gtk_style_copy(gtk_widget_get_style(gtkwidget));
>         color.red = style->bg[GTK_STATE_NORMAL].red;
>         color.green = style->bg[GTK_STATE_NORMAL].green;
>         color.blue = style->bg[GTK_STATE_NORMAL].blue;
>       black.red = 0;
>       black.green = 0;
>       black.blue = 0;    
>
> This to set the color
>
>           style->bg[GTK_STATE_NORMAL].red = black.red;
>           style->bg[GTK_STATE_NORMAL].green = black.green;
>           style->bg[GTK_STATE_NORMAL].blue = black.blue;
>           gtk_widget_set_style(gtkwidget,style);
>           gtk_widget_ensure_style(gtkwidget);
>
> And this to restore it
>
>           style->bg[GTK_STATE_NORMAL].red = color.red;
>           style->bg[GTK_STATE_NORMAL].green = color.green;
>           style->bg[GTK_STATE_NORMAL].blue = color.blue;
>           
>           gtk_widget_set_style(gtkwidget,style);
>           gtk_widget_ensure_style(gtkwidget);
>
> And the background color always stays the default grey.

There's a tutorial by Havoc Pennington on this topic, but I lost the URL
(could be:  http://pobox.com/~hp ), so I post a short part for GTK+ 1.2:

Short answer: how to set the color of a widget
In GTK+ 1.2:

  GtkRcStyle *rc_style;
  GdkColor color;

  /* There are two good ways to fill in a color */

  /* 1) Initialize r/g/b components, they are 16-bit values */
  color.red = 65535;
  color.green = 0;
  color.blue = 0;

  /* 2) Parse a color string; an HTML color spec such as "#FF0000"
   * is allowed here too
   */
  gdk_color_parse ("red", &color);


  /* After filling in your GdkColor, create a GtkRcStyle */

  rc_style = gtk_rc_style_new ();

  /* Set foreground (fg) color in normal state to red */
  rc_style->fg[GTK_STATE_NORMAL] = color;

  /* Indicate which colors the GtkRcStyle will affect; 
   * unflagged colors will follow the theme
   */
  rc_style->color_flags[GTK_STATE_NORMAL] |= GTK_RC_FG;

  gtk_widget_modify_style (widget, rc_style);

  gtk_rc_style_unref (rc_style);

As you can see, I think you should use "gtk_widget_modify_style()" and
check the definition of the used types.

I had some trouble with this myself.

HTH,
Marc