[Mono-list] gtk#

[ruch]

hello everybody...
i have some problems to set up the gtk# on my system,...mono is running 
excellent...but when i try to compile the helloworld.cs from the gtk# sample 
directory( # mcs HelloWorld.cs) the compiler allwas tells me:

HelloWorld.cs(26) error CS0246: Cannot find type `DeleteEventArgs'
Compilation failed: 1 error(s), 0 warnings

and i do not know what the problem is...
have i to configure a conf file manually with the right path?

thanx a lot...
chris