Re: Color sharable question regarding gdk_colormap_alloc_color()

["DC A" <adc4444 hotmail com>]

> Yeti wrote: Sharing of colours means sharing of colourmap entries.

> All the colour allocation stuff dates back to the pre-direct
> colour era when only a limited number of colours were
> available.  The table of all available colours is called
> colourmap, sometimes its entries were changeable, sometimes
> even didn't.  Applications were fighting for colourmap
> entries with other applications that wanted entirely
> different colours...

> Shareable means the application says `I want a colour at
> least a bit similar to this' to the windowing system and
> the windowing system assigns to it a colour from the
> colourmap.  Other applications that wish a similar colour
> can obtain the very same colourmap entry, therefore our
> application must not change the entry to a different
> colour.

> Non-shareable means the application says `I want a colour
> and I want to change it later' to the windowing system and
> it gets an entry in the colourmap that no one else uses.
> (Well, at least not at the same time.)

Thanks Yeti for your explanation. I still have a question. So what youre 
saying is no two application can allocate same color when writable option is 
set to TRUE while using gtk_colormap_alloc_color(). Is that true? If that's 
true then how come I can use the same allocated color (when both of these 
applications are running) to draw a picture?

--DC

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