Re: [gtkmm] Gdk::Color - can't understand

[Igor Gorbounov <igorbounov voronezh serw ru>]

Secil Ayaz wrote:

> > Explain me, why values in Gdk::Color::set_rgb(red, green, blue) must be
> > 2-byte
> >    
>
>  
>
> > Explain me, why values in Gdk::Color::set_rgb(red, green, blue) must be
> > 2-byte
> > values? I mean, that to produce a 0x3fafc0 color I have to write it as
> > set_rgb(0x3fff, 0xafff, 0xc0ff), adding one extra byte to every color
> > component.
> >    
>
> Maybe to cover all formats of colors ans keep it platform independent
> (scanner, printer, ...)
> (incl. alpha and other stuff) in GdkColor.
> I have no prolems with 2 bytes per color unit.
>  
Well, but I do. When I pick up colors from my windows version of a program,
Gimp shows me only byte-sized values, so I wonder if I had to append to it
a 00-byte or 0xFF-byte - I don't notice the difference, but may be 
someone can.

>  
>
> > And next, from reading gtkmm and gtk documentation I nevertheless can't
> > understand whether I really do need colormap or just can easily live on
> > with Gdk::Drawable::set_rgb_foreground() to draw my rectangles and lines
> > on a drawingarea.
> >    
>
> Yes indeed. GTK was designed for a Graphic Manipulation Program.
> You don't need a colormap, if you don't feel so.
>
>  
That's good, then.
   Thanks for the answer.
      Igor Gorbounov