Re: Why GTK+ ignore, that someone want's to create own widget ?!

[Emmanuele Bassi <ebassi gmail com>]

Hi;

On 13 December 2016 at 05:33, Ondrej Tuma <konference webjet cz> wrote:
> At the moment, i just to get default widget border color. But, the
> gtk_style_context_get_border_color is deprecated... and i should to use
> gtk_render_frame. Please tell me how can i use gtk_render_frame to get
> border color?! How?

You don't "get the border color" because there's no such thing as a
border or background color.

CSS, which is used to represent the rendering operations, has a stack
of background and border images, which are blended with colors. Asking
for a single color does not make sense.

You need to call gtk_render_frame() and gtk_render_background() to
*render* the border and background. Then you set up what you want to
render using CSS style classes and call gtk_style_context_add_class()
to add the matching classes to your widget.

Every widget you see is the result of this process.

> What GTK do is putting obstacles in the way of creating more complex
> application. But yes, sometimes, we need special widgets, with special
> using :-(

GTK does not put obstacles anywhere: it provides you with a very rich
and powerful way to describe the rendering process and its final
outcome using a standardised API called "CSS" instead of using only a
C API.

Ciao,
 Emmanuele.

-- 
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[@] ebassi [@gmail.com]