Well.. I found the solution now :) Thanks for pointing me at the ByValArray Dumitru. That turned my attention at the UnManagedType.ByValTStr which fixed the problem :)
For anybody else wondering the solution was: [MarshalAs(UnmanagedType.ByValTStr, SizeConst=256)] public string wszTitle; and now the big question.. why didn't I think of that in the first place? ;-) Have a nice day and thanks for the help! Andreas Häber You can read messages from the DOTNET archive, unsubscribe from DOTNET, or subscribe to other DevelopMentor lists at http://discuss.develop.com.
