更改文本颜色GtkToggleToolButton在C code（GTK + 3） [英] Change text color for GtkToggleToolButton in C code (GTK+3)

问题描述

最近我发现改变GtkToggleToolButton文字的颜色使用CSS表（GTK 3.20）的方式：

Recently I found the way to change color of GtkToggleToolButton text with a CSS sheet (Gtk 3.20):

#histoToolGreen label {
    color: green;
}

#histoToolBlue label {
    color: blue;
}

要做到这一点，我改变了标签，而不是按钮的颜色。它运作良好。但现在我想在做C code中的相同。所以我写的：

To do that, I changed the color of the label rather than that of the button. It works well. But now I want doing the same in C code. So I write :

gtk_css_provider_load_from_data(provider, "#histoToolRed label {color: red;}", -1, NULL);
gtk_style_context_add_provider(
            gtk_widget_get_style_context(lookup_widget("histoToolRed")),
            GTK_STYLE_PROVIDER(provider),
            GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);

但是，这并不工作。我也试过，没有成功：

But that does not work. I also tried, with no success:

gtk_css_provider_load_from_data(provider, "* {color: red;}", -1, NULL);

和许多其他的事情。

有人能告诉我如何使用CSS提供商改变GtkToggleToolButton文本颜色C code吗？

Can someone tell me how to change color of GtkToggleToolButton text in C code using CSS provider ?

推荐答案

我一直没有取得进展试图在小部件级别添加CSS样式。我只设法得到它通过用的 gtk_css_provider_get_default 。

I've made no progress trying to add CSS styling at the widget level. I've only managed to get it to work by adding a style sheet at the application level with gtk_css_provider_get_default.

我所期待的，当我做了类似于你做了什么东西，该样式将被应用到我重视它的部件，以及它的所有儿童。我发现是这种风格只适用于个别的小工具，得到了供应商加入其中。

What I expected when I did something similar to what you've done is that the style would be applied to the widget I attached it to, and all of it's children. What I found is that style is only applied to the individual widget that got the provider added to it.

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