[gtkada] Cairo Context 0x0

[Dmitry A. Kazakov]

On 2016-07-22 09:11, bertus.dries at planet.nl wrote:
> I have been searching further and found in the comment of cairo.ads that
> I must connect to the "expose-event". That gave again problems until  on
> the internet I found that expose-event did not exist anymore and was
> replaced by your "draw" event. The question that remains is how to
> create a "draw" event so that I can retrieve the context to create lines
> with the functions that need the Context?

Queue draw:

https://developer.gnome.org/gtk3/stable/GtkWidget.html#gtk-widget-queue-draw

[ Which is not needed anyway, unless the widget must be updated 
periodically, e.g. an oscilloscope, clock widget ]

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