Dim IID_IAcce As Guid = New Guid("618736E0-3C3D-11CF-810C-00AA00389B71")

        CARET = 0xFFFFFFF8,

    Guid guid = new Guid("{618736E0-3C3D-11CF-810C-00AA00389B71}");

If you are calling this API from .NET Framework version 2.0 or higher, be sure to put the STAThread attribute on your main(), or manually set the ApartmentState property of the thread you are calling this from to ApartmentStates.STA, or you will get an error code of 0x8001010D which is a “cannot call out exception because of an input synchronous call”.

    private const int IME_CMODE_FULLSHAPE = 0x8;

pszProfilePath's capacity must not exceed 260 characters or CreateProfile will return error code 0x800706f7.

    # of -2147024809.

i686-pc-mingw32-gcc -Wl,--enable-stdcall-fixup -Wall userprof.c /cygdrive/c/windows/system32/userenv.dll

http://support.microsoft.com/kb/872895

http://support.microsoft.com/kb/813349

        int result = MAPISendMail(new IntPtr(0), new IntPtr(0), msg, 0x00000001 | 0x00000008, 0);

            int g = ((int)_ColorRef >> 8) & 0xff;

    param.pszFont = "Tahoma,8";

StringBuilder manufacturerString = new StringBuilder(128);

byte[] buffer = new byte[128];

// 5 mSec and we successfully complete the ping in 188 mSec... should timeout.

    char *ip_addr_str = strdup("149.20.53.86");     // www.netbsd.org:

    ''' See http://msdn.microsoft.com/en-us/library/aa374802(v=vs.85).aspx

    ''' NOTE: Windows Vista or Server 2008 or later ONLY. For older Windows versions use CredUIPromptForCredentials().

    ''' See http://msdn.microsoft.com/en-us/library/aa375178(v=VS.85).aspx

    ERROR_NOT_FOUND = 1168

    ERROR_INVALID_PARAMETER = 87

    ''' See http://msdn.microsoft.com/en-us/library/aa375185(v=vs.85).aspx

static extern TODO 8(TODO);

Declare Function 8 Lib "kernel32.dll" (TODO) As TODO

    private const uint ACTCTX_FLAG_RESOURCE_NAME_VALID = 0x008;

    private const uint ACTCTX_FLAG_HMODULE_VALID = 0x080;

    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 128)]

    <MarshalAs(UnmanagedType.ByValTStr, SizeConst:=128)> _

External values of type 'bool' could represent a 1-byte (e.g. C++ bool), 2-byte (e.g. COM VARIANT_BOOL) or 4-byte (e.g. Windows BOOL) value. The distinction is less important for parameters, but for the return, the value would be stored in either (on x86) AL (1 byte), AX (2 bytes) or EAX (4 bytes). By telling interop of the native return type, it knows which parts of EAX to interpret.

http://msdn.microsoft.com/en-us/library/aa288474(v=VS.71).aspx

"You cannot return the same exact pointer from a native function that you took as a parameter. If a native function returns the pointer that has been marshaled to it by PInvoke[c or c++ or DllImport in c#], memory corruption and exceptions may ensue." http://msdn.microsoft.com/en-us/library/ms235282.aspx

    NORM_LINGUISTIC_CASING = &H8000000 'use linguistic rules for casing

    SORT_DIGITSASNUMBERS = &H8 'use digits as numbers sort method

    /// http://msdn.microsoft.com/en-us/library/ms682073(VS.85).aspx

        ColorDWORD = (uint)color.R + (((uint)color.G) << 8) + (((uint)color.B) << 16);

           (int)(0x0000FF00U & ColorDWORD) >> 8, (int)(0x00FF0000U & ColorDWORD) >> 16);

        ColorDWORD = (uint)color.R + (((uint)color.G) << 8) + (((uint)color.B) << 16);

        [FieldOffset(8), MarshalAs(UnmanagedType.U2)]

        const uint CONSOLE_MOUSE_DOWN = 0x0008; // Mouse is down

        COPY_FILE_ALLOW_DECRYPTED_DESTINATION = 0x00000008

        COPY_FILE_ALLOW_DECRYPTED_DESTINATION = &H8

        COPY_FILE_ALLOW_DECRYPTED_DESTINATION = 0x00000008

        COPY_FILE_ALLOW_DECRYPTED_DESTINATION = &H8

http://msdn.microsoft.com/en-us/library/windows/desktop/ms686010%28v=vs.85%29.aspx

    PageWriteCopy = 0x08,

    SectionCommit = 0x8000000,

    PageWriteCopy = &H8

    SectionCommit = &H8000000

        PageWriteCopy = 0x08,

        SectionCommit = 0x8000000,

    PageWriteCopy = 0x08,

    SectionCommit = 0x8000000,

    PageWriteCopy = &H8

    SectionCommit = &H8000000

        PageWriteCopy = 0x08,

        SectionCommit = 0x8000000,

        public const int    ERROR_ALREADY_EXISTS    = 183;

        public const int    ERROR_ALREADY_EXISTS    = 183;

            WRITE_OWNER        = 0x00080000,

        FILE_FLAG_FIRST_PIPE_INSTANCE = 0x00080000,

        FILE_FLAG_WRITE_THROUGH = 0x80000000,

        WRITE_OWNER = 0x00080000L,

        PIPE_REJECT_REMOTE_CLIENTS = 0x00000008

    private const UInt32 GENERIC_READ = 0x80000000;

Replace STARTUPINFO with STARTUPINFOEX to use UpdateProcThreadAttribute and extend CreateProcess. Make sure you include the flag EXTENDED_STARTUPINFO_PRESENT (0x00080000)

If the approach outlined above does not work verbatim, try the variation by Thottam R. Sriram: http://blogs.msdn.com/thottams/archive/2006/08/11/696013.aspx

Here's a sample of using CreateRemoteThread from C#: http://blogs.msdn.com/jmstall/archive/2006/09/28/managed-create-remote-thread.aspx

    WT_EXECUTEINPERSISTENTTHREAD = 0x00000080,

    WT_EXECUTEONLYONCE = 0x00000008,

    WT_EXECUTEINPERSISTENTTHREAD = 0x00000080,

    WT_EXECUTEONLYONCE = 0x00000008,

    public const uint TH32CS_SNAPMODULE   = 0x00000008;

    public const uint TH32CS_INHERIT      = 0x80000000;

You may find that you when calling CreateToolhelp32Snapshot that you must specify SnapshotFlag.NoHeaps in addition to any other flags or you will get an invalid handle and an "Out of Memory" error (ERROR_NOT_ENOUGH_MEMORY = 0x8). This is a seemingly undocumented flag. See the bottom of the MSDN page http://msdn.microsoft.com/en-us/library/windows/desktop/ms682489(v=vs.85).aspx

    Module = 0x00000008,

    Inherit = 0x80000000,

    internal const uint DDD_NO_BROADCAST_SYSTEM = 0x00000008;

    Status = DeviceIoControl( handle, Control, ref DeviceBuffer, 8, ref AdcOverlapData );

    DiskFileSystem        = 0x00000008,

    Printer                = 0x00000018,

    Port8042            = 0x00000027,

    NetworkRedirector    = 0x00000028,

    Termsrv                = 0x00000038,

///     http://msdn.microsoft.com/en-us/library/windows/hardware/ff543023(v=vs.85).aspx

     DiskGetDriveGeometryEx = (EFileDevice.Disk << 16) | (0x0028 << 2) | EMethod.Buffered | (0 << 14),

     DiskPerformance = (EFileDevice.Disk << 16) | (0x0008 << 2) | EMethod.Buffered | (0 << 14),

     DiskSenseDevice = (EFileDevice.Disk << 16) | (0x00f8 << 2) | EMethod.Buffered | (0 << 14),

     ChangerExchangeMedium = (EFileDevice.Changer << 16) | (0x0008 << 2) | EMethod.Buffered | (FileAccess.Read << 14),

     FsctlDismountVolume = (EFileDevice.FileSystem << 16) | (8 << 2) | EMethod.Buffered | (0 << 14),

     FsctlGetRetrievalPointers = (EFileDevice.FileSystem << 16) | (28 << 2) | EMethod.Neither | (0 << 14),

     FsctlSetObjectId = (EFileDevice.FileSystem << 16) | (38 << 2) | EMethod.Buffered | (0 << 14),

     FsctlCreateOrGetObjectId = (EFileDevice.FileSystem << 16) | (48 << 2) | EMethod.Buffered | (0 << 14),

     FsctlReadFileUsnData = (EFileDevice.FileSystem << 16) | (58 << 2) | EMethod.Neither | (0 << 14),

     FsctlHsmData = (EFileDevice.FileSystem << 16) | (68 << 2) | EMethod.Neither | (FileAccess.ReadWrite << 14),

http://msdn.microsoft.com/en-us/library/aa363147(v=VS.85).aspx

   Private Const DFP_GET_VERSION As Integer = &H74080

   Private Const DFP_SEND_DRIVE_COMMAND As Integer = &H7C084

   Private Const DFP_RECEIVE_DRIVE_DATA As Integer = &H7C088

   Private Const GENERIC_READ As Integer = &H80000000

   Private Const IOCTL_STORAGE_CHECK_VERIFY2 As Integer = &H2D0800

   Private Const FILE_READ_ATTRIBUTES As Integer = &H80

       ERROR_RATE_ATTRIBUTE = &H8

       <MarshalAs(UnmanagedType.ByValTStr, SizeConst:=128)> _

    FONT = 8,

    FONT = 8

    private const uint RT_FONT = 0x00000008;

        case 87:

    LOCALE_NOUSEROVERRIDE     =0x80000000,   // do not use user overrides

    LOCALE_SNATIVECOUNTRYNAME     =0x00000008,   // native name of country, eg "Deutschland"

    LOCALE_SMONGROUPING       =0x00000018,   // monetary grouping

    LOCALE_S1159          =0x00000028,   // AM designator

    LOCALE_SMONTHNAME1        =0x00000038,   // long name for January

    LOCALE_SMONTHNAME8        =0x0000003F,   // long name for August

    LOCALE_SABBREVMONTHNAME5      =0x00000048,   // abbreviated name for May

    LOCALE_SABBREVMONTHNAME8      =0x0000004B,   // abbreviated name for August

    LOCALE_FONTSIGNATURE      =0x00000058,   // font signature

    LOCALE_IPAPERSIZE         =0x0000100A,   // 1 = letter, 5 = legal, 8 = a3, 9 = a4

    LOCALE_SNATIVECURRNAME    =0x00001008,   // native name of currency

    LOCALE_SISO3166CTRYNAME2      =0x00000068,   // 3 character ISO country name

        case 87:

    LOCALE_NOUSEROVERRIDE     =0x80000000,   // do not use user overrides

    LOCALE_SNATIVECOUNTRYNAME     =0x00000008,   // native name of country, eg "Deutschland"

    LOCALE_SMONGROUPING       =0x00000018,   // monetary grouping

    LOCALE_S1159          =0x00000028,   // AM designator

    LOCALE_SMONTHNAME1        =0x00000038,   // long name for January

    LOCALE_SMONTHNAME8        =0x0000003F,   // long name for August

    LOCALE_SABBREVMONTHNAME5      =0x00000048,   // abbreviated name for May

    LOCALE_SABBREVMONTHNAME8      =0x0000004B,   // abbreviated name for August

    LOCALE_FONTSIGNATURE      =0x00000058,   // font signature

    LOCALE_IPAPERSIZE         =0x0000100A,   // 1 = letter, 5 = legal, 8 = a3, 9 = a4

    LOCALE_SNATIVECURRNAME    =0x00001008,   // native name of currency

    LOCALE_SISO3166CTRYNAME2      =0x00000068,   // 3 character ISO country name

    SETBREAK = 8, //Suspends character transmission and places the transmission line in a break state until the ClearCommBreak function is called

            hexTS.Substring(14, 2), hexTS.Substring(12, 2), hexTS.Substring(10, 2), hexTS.Substring(8, 2));

FILE_NOTIFY_CHANGE_SIZE 0x00000008

https://msdn.microsoft.com/en-us/library/windows/desktop/aa365261(v=vs.85).aspx

    //0x40000000 | 0x80000000 - corresponds to GENERIC_READ | GENERIC_WRITE

    IntPtr inBuffer = GetInputBuffer("CONIN$", 0x40000000 | 0x80000000,

If you are trying use FormatMessage to "decode" an error from Marshal.GetLastWin32Error, go take a look at Marshal.ThrowExceptionForHR (http://msdn.microsoft.com/en-us/library/ckxcyk36(v=VS.80).aspx).

    const uint FORMAT_MESSAGE_FROM_HMODULE = 0x00000800;

If you are trying use FormatMessage to "decode" an error from Marshal.GetLastWin32Error, go take a look at Marshal.ThrowExceptionForHR (http://msdn.microsoft.com/en-us/library/ckxcyk36(v=VS.80).aspx).

    const uint FORMAT_MESSAGE_FROM_HMODULE = 0x00000800;

    'FORMAT_MESSAGE_FROM_HMODULE = &H800

    ENABLE_WINDOW_INPUT = &H8

    ENABLE_EXTENDED_FLAGS = &H80

        public COLORREF color8;

        const uint CONSOLE_MOUSE_DOWN = 0x0008; // Mouse is down

     ShowNA = 8

    /// http://msdn.microsoft.com/en-us/library/aa288104.aspx

        /// Unicode (UTF-8)

        CP_UTF8 = 65001,

     8 => -###.## $

Look at this link: http://msdn.microsoft.com/en-us/goglobal/bb688126.aspx