🚀 go-pugleaf

In article <1993Jan19.201957.21870@pilot.dmg.ml.com>, persico@orestes.sysdev.dmg.ml.com (Matthew Persico) writes:
> In article <ALSAGGAF.93Jan13171926@e40-008-4.mit.edu>,
> ed.duomo@launchpad.unc.edu writes:|>
> |> [detailed explanation removed...]
> |>
> |> So there you have it, gentile Xperts: is there a way of changing the
> |>background of a pixmap after it has been created?
> |>
> |> Thanks.
> |>
> |> -Ed.
> |>
> I'd like to ask a related question:  I have wrapped Motif message dialogs
> in a set of "convenience functions" that allow me to reuse these widgets
> instead of creating and destroying them. I have discovered that
> if I try to change the background color of dialog after creation, the 
> background color of the symbol doesn't change. Here's a sample:

[deleted..]

> If I do this, then the foregound and background come up with 
> the correct colors, but the pixmap background and foregound don't
> match the dialog's values.  I guess there is some other value I need to
> set, but I can;t find it in O'Reilly Volume 6 or the OSF liturature.
> Any answers out there?

The reason is simple, as der Mouse has pointed out in previous posts.
The symbol is a pixmap. The pixmap has pixel values coded into it when it is
created. If you select your colours before the dialog is created (when the
pixmap is also created [for simplification in this example]) then the pixmap
will be initialised with the correct colours. If you then change the colours
later the pixmap will already have the previous pixel values encoded in it.
Result: it doesn't look the same.
-- 
snail@lsl.co.uk      

"Washing one's hands of the conflict between the powerful and the powerless
 means to side with the powerful, not to be Neutral."
                                                     Quote by Freire.
                                                     Poster by OXFAM.