Photo negitive of a bitmap

[john]

what operation can i performe on a bitmap, in C#, that
will give the visual effect of a photo negitive? I have a
bitmap on a form, and when people mouse over the bitmap,
i'd like all light colors to be dark and all dark colors
to be light.

thanks,
JOhn

 

[Michael Mayer]

I haven't seen a built-in function to do that (although I haven't
looked). You can use code presented on this page to "invert" or make
a negative of a picture.
http://www.codeproject.com/cs/media/csharpgraphicfilters11.asp

Mike Mayer