How to remove button background shadows in GTK? (C)

Question

I'm new in the gtk's world and I cannot find a solution to this little problem.

I have this button :

But I would like that the small shadow behind the button can be removed. I'd like this result :

How can I solve it?

Button's code:

sum_button = gtk_button_new_from_stock(GTK_STOCK_ADD);
/**/
style = gtk_widget_get_style(sum_button);
style->bg[GTK_STATE_PRELIGHT] = style->bg[GTK_STATE_NORMAL];
gtk_widget_set_style(sum_button, style);
/**/
gtk_widget_modify_bg(sum_button, GTK_STATE_NORMAL, &color2);
gtk_button_set_relief(GTK_BUTTON(sum_button), GTK_RELIEF_HALF);
g_signal_connect(G_OBJECT(sum_button), "clicked", G_CALLBACK(PrintNumber),&t_data);
gtk_box_pack_start(GTK_BOX (hbox3), sum_button, TRUE, TRUE, 0);

score 3 · Answer 1 · edited May 23 '17 at 11:52

3

Try

gtk_button_set_relief(GTK_BUTTON(sum_button), GTK_RELIEF_NONE);

But then you can not set the background color:

When the button's border relief is set to none, it acts like a label as in it is "transparent", it has the same bg color as its parent container.

Take a look to this thread: https://stackoverflow.com/a/1709648/1606345

edited May 23 '17 at 11:52

Community

1
1

answered May 02 '16 at 19:30

David Ranieri

39,972
7
52
94

Ok I try it in this way: `gtk_button_set_relief(GTK_BUTTON(sum_button), GTK_RELIEF_NONE); gtk_widget_modify_bg(sum_button, GTK_STATE_NORMAL, &color2);`But it doesn't work cause it doesn't set any colored background – Marco Rossi May 02 '16 at 19:39
So I read that isn't possible what I want to do. Right? Or maybe in another ways... – Marco Rossi May 02 '16 at 19:54
1

Right, can you put the button in a green container?, this may work. – David Ranieri May 02 '16 at 19:58
Yeah I can try it. Thanks. – Marco Rossi May 02 '16 at 20:11

score 0 · Answer 2 · answered May 31 '16 at 01:31

0

If you are writing new code, consider using GTK 3, where you can do this with CSS directly:

GtkCssProvider *provider = gtk_css_provider_new();
gtk_css_provider_load_from_data(provider,
    "button {"
    "  border: 0px;"
    "  background-color: green;"
    "  color: white;"
    "}", -1, &error);
GtkStyleContext *context = gtk_widget_get_style_context(button);
gtk_style_context_add_provider(context, provider,
    GTK_STYLE_PROVIDER_PRIORITY_USER);

answered May 31 '16 at 01:31

ptomato

56,175
13
112
165

I started using gtk3. I declared 'error' as **GError** *error; and I tried your code, when I compile 0 errors but seems doesn't do anything. The button doesn't change his style. What could be the problem? – Marco Rossi Jun 02 '16 at 09:28
I solved using 'GtkButton' as class in a 'style.css' file loaded with gtk_css_provider_load_from_path() function. But it doesn't work if I want to specific a 'enter_button' class (or id) when 'enter_button' is the name of the GtkButton. Any solutions? – Marco Rossi Jun 02 '16 at 13:57

How to remove button background shadows in GTK? (C)

2 Answers2