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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Pango in GtkAda Gtk version 3
Date: Fri, 31 Jan 2014 11:24:58 +0100
Organization: cbb software GmbH
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Date: 2014-01-31T11:24:58+01:00
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On Fri, 31 Jan 2014 10:27:19 +0100, ldries46 wrote:

> Is their an equivalent of the "Hello World" program for using 'Pango' within 
> a drawing area.
> If so where can I find it?

Nowhere. GTK+ 3.x does not have drawing area anymore.

> I need it to learn using Pango within a program

To use a Pango font with Cairo, you should:

1. create a Pango_Layout on the given context (Create_Layout);
2. set Pango font there (Set_Font_Description);
3. set text to render into the layout (Set_Text);
4. draw the layout (Show_Layout_Line).

For further information see:

https://developer.gnome.org/pango/unstable/pango-Cairo-Rendering.html

Examples of use with GtkAda are here (require some adjustments for GTK
3.x).

http://www.dmitry-kazakov.de/ada/aicwl.htm

Since Pango fonts and Toy fonts are considerably different in their use,
the library has an abstraction layer in order to be able to use both.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de