DirectColor-visual?

[Harold L Hunt II]

Alan,

So would it make any sense at all to try to support it on Windows?  To 
the best of my knowledge, you cannot read and write the 24 bit colors 
that are available.

Harold

Alan Hourihane wrote:
> On Mon, Jan 13, 2003 at 07:43:40PM -0500, Harold L Hunt II wrote:
> 
>>Francisco,
>>
>>Do you know what a DirectColor visual is?
>>
>>Do you know why you would need a DirectColor visual?
>>
>>Do you know of any Windows-based graphics cards that actually support 
>>DirectColor?
>>
>>
>>My understanding of DirectColor is that it allows you to specify the 
>>range of colors that will be used in a mode that is similar to 
>>TrueColor... however, I don't know of a single Windows graphics card 
>>that allows you to do that.  I don't know of any program that utilizes 
>>such a visual either.  As such, there is no support for DirectColor in 
>>Cygwin/XFree86.  I don't expect that there will ever be DirectColor 
>>support in Cygwin/XFree86 unless someone can explain to me that I am way 
>>wrong.
>>
>>DirectColor seems like a lot of things in X: it was thought to be REALLY 
>>useful when X was designed, but it turned out to be anything but useful. 
>> I read about those things once, then I ignore them after that.
>>
>>So, anyone else know what DirectColor is?
> 
> 
> DirectColor is a read/write colormap just like PseudoColor.
> TrueColor is a read only colormap just like StaticColor.
> 
> Direct/True giving more colors than the other two though.
> 
> Alan.