I've just started looking into fixed sized buffers in C# 2, and I
think I must be missing something. I have no problems when not dealing
with interop, but as soon as I start using interop things go wrong.

I thought I'd try GetTimeZoneInformation as a starting point, partly
as I know I can get at the character data using
UnmanagedType.ByValTStr for a consistency check. Unfortunately, I'm
only getting the first character of the daylight name and the standard
name. A complete program follows - could someone point out the stupid
mistake I've doubtless made? Uncommenting the version using
"Marshal.As UnmanagedType.ByValTStr" gives the correct values (GMT
etc) but as posted it just prints out "G" twice.

Jon

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, Pack=1)]
struct SystemTime
{
 public ushort Year;
 public ushort Month;
 public ushort DayOfWeek;
 public ushort Day;
 public ushort Hour;
 public ushort Minute;
 public ushort Second;
 public ushort Milliseconds;
}

[StructLayout(LayoutKind.Sequential, Pack=1, CharSet=CharSet.Unicode)]
unsafe struct TimeZoneInformation
{
 public int Bias;
 //[MarshalAs(UnmanagedType.ByValTStr, SizeConst=32)]
 //public string StandardName;
 public fixed char StandardName[32];
 public SystemTime StandardDate;
 public int StandardBias;
 //[MarshalAs(UnmanagedType.ByValTStr, SizeConst=32)]
 //public string DaylightName;
 public fixed char DaylightName[32];
 public SystemTime DaylightDate;
 public int DaylightBias;
}

public class Test
{
 [DllImport("kernel32.dll", CharSet=CharSet.Unicode)]
 static extern uint GetTimeZoneInformation
   (out TimeZoneInformation timeZoneInformation);

 static void Main()
 {
     unsafe
     {
       TimeZoneInformation info;
       uint result = GetTimeZoneInformation (out info);
       //Console.WriteLine (info.StandardName);
       //Console.WriteLine (info.DaylightName);
       Console.WriteLine (new string(info.DaylightName));
       Console.WriteLine (new string(info.StandardName));
     }
 }
}