Re: [gtk-list] Re: Dynamic Style/Color change - I don't find the solution...

[Georg Greve <greve fusebox hanse de>]

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Hi Tim !

Tim Janik <timj@gtk.org> writes:
> On Mon, 6 Jul 1998, Georg Greve wrote:
> could you provide a small example snippet?
> your approach seems to be correct, and you should really not get a segfault
> with this.

Sure. What I do during initialization is: 
     GdkColormap* cmap = gdk_colormap_get_system();

and (in a loop for each object I want to be changeable later):

    myobject->style = gtk_style_copy(gtk_rc_get_style(window));
    gtk_widget_set_style(myobject->widget, myobject->style);
(myobject is a class with objects GtkWidget* widget and GtkStyle* style)

window is the main window widget and this part works just fine so far
(the style settings for the main window are being used for the
objects).


During the change-phase I do:

  GdkColor normal = {0,color triplet};
  GdkColor plight = {0,color triplet};

  gdk_color_alloc (cmap, &normal);
  gdk_color_alloc (cmap, &plight);

/*

	I tried gtk_style_detach and so on here

*/
  myobject->style->bg[GTK_STATE_NORMAL].red = normal.red;
  myobject->style->bg[GTK_STATE_NORMAL].green = normal.green;
  myobject->style->bg[GTK_STATE_NORMAL].blue = normal.blue;
  myobject->style->bg[GTK_STATE_PRELIGHT].red = plight.red;
  myobject->style->bg[GTK_STATE_PRELIGHT].green = plight.green;
  myobject->style->bg[GTK_STATE_PRELIGHT].blue = plight.blue;

/*	

	I tried widget_realize and everything else here

*/	

  if ( myobject->pixels[0] != 0 && myobject->pixels[1] != 0 )
    gdk_colors_free(cmap, myobject->pixels, 2, 0);  

  myobject->pixels[0] = normal.pixel;
  myobject->pixels[1] = plight.pixel;


This should (in my eyes) allocate the new colors and free the ones
that it had been changed to on the last run... 

So what is missing there ??? I am really clueless by now (which
doesn't mean I'll stop trying... :-) ).

Later,
	Georg

- -- 
Georg C. F. Greve <greve@fusebox.hanse.de>
http://porter.desy.de/~greve/ - ICQ#10016966
"People who fight may lose. People who do not
fight have already lost." -- Bertolt Brecht

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