[AD] Request: adding textout_ex(), which takes bg color as parameter

[Laurence Withers <lwithers@xxxxxxxxxx>]

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Hi,

I would like to add a "textout_ex()" function, which takes the bg color 
as a parameter rather than reading it from the global "_textmode" 
variable.

The reason for doing this is twofold: firstly, it simplifies things 
which want to write text with their own background color, independent 
of the current user setting (eg. the GUI), and second, it removes any 
semblance of state from the text renderer, so we can use it in a 
multithreaded environment (which is what I want to do in my GUI).

Currently, it is not possible to use two threads displaying different 
dialogs, because one thread may change the background color and then 
another thread (which was using a different background color) tries to 
write something, and gets the wrong background. The solution is a mutex 
around textout(), but that is silly.

Bye for now,
- -- 
Laurence Withers,  lwithers@xxxxxxxxxx
(GnuPG 04A646EA) http://www.lwithers.demon.co.uk/
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