VNC on NT - Suppressing Wallpaper graphics

[the wikster]

On Wed, 2 Feb 2000, Walden Leverich wrote:

> Dan,
> 
> Actually he has received several responses and I am working on a patch that
> will disable the wallpaper on connect.
> 
> Now I have a question for all the windows programmer types out there. Does
> anyone know how to determine the current wallpaper setting?
> SystemParametersInfo() has a documented option to get the current wallpaper
> but it is not defined in WinUser.h and even if it was it is only valid in
> Windows 2000. I can set the wallpaper to nothing, but I don't know what it
> was so I can't restore it. I'll be searching more, but I wonder if anyone
> already has a solution.
> 
> -Walden


That function has two parameters that are of interest:

	SPI_SETDESKWALLPAPER and SPI_GETDESKWALLPAPER

I remember using both of these to do exactly what you were talking about
with WinVNC (although the code is long lost).  I stored the wallpaper
filename in temp registry entry (it's just a string) and pulled it back
when the user disconnected.  This worked like a charm on NT 4.0 and I'm
reasonably sure that it works just as well on other versions of windows.

My winuser.h from VC++ 5.0 has those defines in it.  

Cheers,

JCSmolens
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