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GetSystemInfo (coredll)
 

coredll is for smart devices, not desktop Windows. Therefore, this information only applies to code using the .NET Compact Framework. To see if information for GetSystemInfo in other DLLs exists, click on Find References to the right.

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Summary
TODO - a short description

C# Signature:

    [DllImport("kernel32", SetLastError = true)]
    public static extern void GetSystemInfo(out SYSTEM_INFO lpSystemInfo);

VB Signature:

    Declare Function GetSystemInfo Lib "coredll.dll" (ByVal lpSystemInfo AS SYSTEM_INFO)

VB Support Enumerations:

    Public Enum ProcessorArchitecture As Int16
        PROCESSOR_ARCHITECTURE_INTEL = 0
        PROCESSOR_ARCHITECTURE_MIPS = 1
        PROCESSOR_ARCHITECTURE_ALPHA = 2
        PROCESSOR_ARCHITECTURE_PPC = 3
        PROCESSOR_ARCHITECTURE_SHX = 4
        PROCESSOR_ARCHITECTURE_ARM = 5
        PROCESSOR_ARCHITECTURE_IA64 = 6
        PROCESSOR_ARCHITECTURE_ALPHA64 = 7
        PROCESSOR_ARCHITECTURE_UNKNOWN = &hFFFF;
    End Enum

SYSTEM_INFO on MSDN

    /// <summary>
    /// http://msdn.microsoft.com/en-us/library/ms942639.aspx
    /// </summary>
    [StructLayout(LayoutKind.Sequential)]
    public struct SYSTEM_INFO_WCE30
    {
        [MarshalAs(UnmanagedType.U4)]
        public int dwOemId;
        [MarshalAs(UnmanagedType.U2)]
        public short wProcessorArch;
        [MarshalAs(UnmanagedType.U2)]
        public short wReserved;
        [MarshalAs(UnmanagedType.U4)]
        public int dwPageSize;
        public uint lpMinimumApplicationAddress;
        public uint lpMaximumApplicationAddress;
        [MarshalAs(UnmanagedType.U4)]
        public int dwActiveProcessorMask;
        [MarshalAs(UnmanagedType.U4)]
        public int dwNumberOfProcessors;
        [MarshalAs(UnmanagedType.U4)]
        public int dwProcessorType;
        [MarshalAs(UnmanagedType.U4)]
        public int dwAllocationGranularity;
        [MarshalAs(UnmanagedType.U2)]
        public short dwProcessorLevel;
        [MarshalAs(UnmanagedType.U2)]
        public short dwProcessorRevision;
    }

    /// <summary>
    /// http://msdn.microsoft.com/en-us/library/aa450921.aspx
    /// </summary>
    [StructLayout(LayoutKind.Sequential)]
    public struct SYSTEM_INFO_WCE50
    {
        [MarshalAs(UnmanagedType.U2)]
        public short wProcessorArch;
        [MarshalAs(UnmanagedType.U2)]
        public short wReserved;
        [MarshalAs(UnmanagedType.U4)]
        public int dwPageSize;
        public uint lpMinimumApplicationAddress;
        public uint lpMaximumApplicationAddress;
        [MarshalAs(UnmanagedType.U4)]
        public int dwActiveProcessorMask;
        [MarshalAs(UnmanagedType.U4)]
        public int dwNumberOfProcessors;
        [MarshalAs(UnmanagedType.U4)]
        public int dwProcessorType;
        [MarshalAs(UnmanagedType.U4)]
        public int dwAllocationGranularity;
        [MarshalAs(UnmanagedType.U2)]
        public short dwProcessorLevel;
        [MarshalAs(UnmanagedType.U2)]
        public short dwProcessorRevision;
    }

Alternative Managed API:

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Notes:

Tips & Tricks:

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Sample Code:

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
namespace Test
{

    public enum ProcessorArchitecture : int
    {
     PROCESSOR_ARCHITECTURE_INTEL = 0,
     PROCESSOR_ARCHITECTURE_MIPS = 1,
     PROCESSOR_ARCHITECTURE_ALPHA = 2,
     PROCESSOR_ARCHITECTURE_PPC = 3,
     PROCESSOR_ARCHITECTURE_SHX = 4,
     PROCESSOR_ARCHITECTURE_ARM = 5,
     PROCESSOR_ARCHITECTURE_IA64 = 6,
     PROCESSOR_ARCHITECTURE_ALPHA64 = 7,
     PROCESSOR_ARCHITECTURE_UNKNOWN = 0xFFFF,
    }

    public class SysInfo
    {
    [DllImport("kernel32", EntryPoint = "GetSystemInfo", SetLastError = true)]
    public static extern void GetSystemInfo30(out SYSTEM_INFO_WCE30 pSi);

    [DllImport("kernel32", EntryPoint = "GetSystemInfo", SetLastError = true)]
    public static extern void GetSystemInfo50(out SYSTEM_INFO_WCE50 pSi);

    public static ProcessorArchitecture GetProcessorArch()
    {
        if (Environment.OSVersion.Platform != PlatformID.WinCE)
        return ProcessorArchitecture.PROCESSOR_ARCHITECTURE_UNKNOWN; // probably no coredll

        if (Environment.OSVersion.Version.Major >= 5)
        {
        SYSTEM_INFO_WCE50 si;
        GetSystemInfo50(out si);
        return (ProcessorArchitecture)si.wProcessorArch;
        }
        else
        {
        SYSTEM_INFO_WCE30 si;
        GetSystemInfo30(out si);
        return (ProcessorArchitecture)si.wProcessorArch;
        }
    }
    }

Documentation

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