Hallo Daniel,
thanks for your reply.
Daniel Elstner schrieb:
>> m_drawable = Gdk::Drawable::create();
>
> That looks odd. If that create() method does indeed exist, I have no
> idea what it would possibly do. Gdk::Drawable is an abstract base
> class. :-)
Well, that explains a few things, e.g. some missing constructor methods
for Gdk::Drawable (compared with other classes). Since this class method
returns a Glib::RefPtr<Gdk::Drawable> I assumed that this is the way of
creating objects. The documentation unfortunately lacks some information
at this point, what this is used for.
>> Maybe I have somewhere overlooked something in the documentation, but I
>> assume that this is the right way to instantiate an Gdk::Drawable object.
>
> I'm surprised that it is possible at all. You want to instantiate a
> Gdk::Pixmap, Gdk::Bitmap or Gdk::Window object, I think.
>
> Also, are you sure Gdk::Image is really what you want to use? This
> stuff all maps directly to X11 primitives...
Well, I don’t want to use Cairo for just drawing simple pixels. I indeed
don’t need stuff like arcs, lines or whatever else; I want to read
pixels out of an image, process the values and write the result into
another image. Purely and simple pixel operations.
Ok, you suggest to take Gdk::Pixmap for this stuff. Well, how do I
convert the Gdk::Pixbuf into a Gdk::Pixmap?
Greetings,
Falk Schilling
_______________________________________________
gtkmm-list mailing list
gtkmm-list@...
http://mail.gnome.org/mailman/listinfo/gtkmm-list
