short t1_timeouts;

    short ti_timeouts;

   Dim t1_timeouts As Short

   Dim ti_timeouts As Short

   WORD    t1_timeouts;

   WORD    ti_timeouts;

using System.Runtime.InteropServices;

Imports System.Runtime.InteropServices

        public SYSTEMTIME stLastSeen;

        public SYSTEMTIME stLastUsed;

SYSTEMTIME

        internal byte cTimeoutMultiplier;

        public FILETIME CreationTime;

        public FILETIME LastAccessTime;

        public FILETIME LastWriteTime;

  <FieldOffset(4)> Public ftCreationTime As Int64         ' FILETIME

  <FieldOffset(12)> Public ftLastAccessTime As Int64      ' FILETIME

  <FieldOffset(20)> Public ftLastWriteTime As Int64       ' FILETIME

    val mutable CreationTime:FILETIME

    val mutable LastAccessTime:FILETIME

    val mutable LastWriteTime:FILETIME

        /// Time limit enabled flag. If this member is TRUE, streaming capture stops after the number

        /// of seconds in wTimeLimit has elapsed. The default value is FALSE.

        /// Time limit for capture, in seconds. This parameter is used only if fLimitEnabled is TRUE.

        public System.UInt32 wTimeLimit;

        /// a video source is enabled. If it is FALSE, real-time capture using an MCI device is enabled.

        public System.UInt32 dwMCIStartTime;

        public System.UInt32 dwMCIStopTime;

        /// Number of times a frame is sampled when creating a frame based on the average sample. A typical

        ''' Time limit enabled flag. If this member is TRUE, streaming capture stops after the

        ''' number of seconds in wTimeLimit has elapsed. The default value is FALSE.

        ''' Time limit for capture, in seconds. This parameter is used only if fLimitEnabled is TRUE.

        Public wTimeLimit As Integer

        ''' a video source is enabled. If it is FALSE, real-time capture using an MCI device is enabled.

        Public dwMCIStartTime As Integer

        Public dwMCIStopTime As Integer

        ''' Number of times a frame is sampled when creating a frame based on the average sample. A

Imports System.Runtime.InteropServices

   public FILETIME NotBefore;

   public FILETIME NotAfter;

        public IntPtr pftTimeToUse;

        public uint dwUrlRetrievalTimeout;

        public bool fCheckFreshnessTime;

        public uint dwFreshnessTime;

        public IntPtr pftCurrentTime;

        public bool fHasFreshnessTime;

        public uint dwFreshnessTime;

const UInt32 PCF_INTTIMEOUTS   = 0x0080; // Interval time-outs supported

const UInt32 PCF_TOTALTIMEOUTS = 0x0040; // Total (elapsed) time-outs supported

struct COMMTIMEOUTS {

     public UInt32 ReadIntervalTimeout;

     public UInt32 ReadTotalTimeoutMultiplier;

     public UInt32 ReadTotalTimeoutConstant;

     public UInt32 WriteTotalTimeoutMultiplier;

     public UInt32 WriteTotalTimeoutConstant;

Private Type COMMTIMEOUTS

    ReadIntervalTimeout As Long

    ReadTotalTimeoutMultiplier As Long

    ReadTotalTimeoutConstant As Long

    WriteTotalTimeoutMultiplier As Long

    WriteTotalTimeoutConstant As Long

Public Structure COMMTIMEOUTS

    Public ReadIntervalTimeout As Int32

    Public ReadTotalTimeoutMultiplier As Int32

    Public ReadTotalTimeoutConstant As Int32

    Public WriteTotalTimeoutMultiplier As Int32

    Public WriteTotalTimeoutConstant As Int32

ReadIntervalTimeout

Maximum time allowed to elapse between the arrival of two bytes on the communications line, in milliseconds. During a ReadFile operation, the time period begins when the first byte is received. If the interval between the arrival of any two bytes exceeds this amount, the ReadFile operation is completed and any buffered data is returned. A value of zero indicates that interval time-outs are not used.

A value of MAXDWORD, combined with zero values for both the ReadTotalTimeoutConstant and ReadTotalTimeoutMultiplier members, specifies that the read operation is to return immediately with the bytes that have already been received, even if no bytes have been received.

ReadTotalTimeoutMultiplier

Multiplier used to calculate the total time-out period for read operations, in milliseconds. For each read operation, this value is multiplied by the requested number of bytes to be read.

ReadTotalTimeoutConstant

Constant used to calculate the total time-out period for read operations, in milliseconds. For each read operation, this value is added to the product of the ReadTotalTimeoutMultiplier member and the requested number of bytes.

A value of zero for both the ReadTotalTimeoutMultiplier and ReadTotalTimeoutConstant members indicates that total time-outs are not used for read operations.

WriteTotalTimeoutMultiplier

Multiplier used to calculate the total time-out period for write operations, in milliseconds. For each write operation, this value is multiplied by the number of bytes to be written.

WriteTotalTimeoutConstant

Constant used to calculate the total time-out period for write operations, in milliseconds. For each write operation, this value is added to the product of the WriteTotalTimeoutMultiplier member and the number of bytes to be written.

A value of zero for both the WriteTotalTimeoutMultiplier and WriteTotalTimeoutConstant members indicates that total time-outs are not used for write operations.

If an application sets ReadIntervalTimeout and ReadTotalTimeoutMultiplier to MAXDWORD and sets ReadTotalTimeoutConstant to a value greater than zero and less than MAXDWORD, one of the following occurs when the ReadFile function is called:

->If no bytes arrive within the time specified by ReadTotalTimeoutConstant, ReadFile times out.

     /// returns after the profile has been loaded. Loading the profile can be time-consuming,

   <System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Sequential)> _

using System.Runtime.InteropServices;

    [System.Runtime.InteropServices.FieldOffset(0)]

    [System.Runtime.InteropServices.FieldOffset(32)]

    [System.Runtime.InteropServices.FieldOffset(34)]

    [System.Runtime.InteropServices.FieldOffset(36)]

    [System.Runtime.InteropServices.FieldOffset(38)]

    [System.Runtime.InteropServices.FieldOffset(40)]

    [System.Runtime.InteropServices.FieldOffset(44)]

    [System.Runtime.InteropServices.FieldOffset(46)]

    [System.Runtime.InteropServices.FieldOffset(48)]

    [System.Runtime.InteropServices.FieldOffset(50)]

    [System.Runtime.InteropServices.FieldOffset(52)]

    [System.Runtime.InteropServices.FieldOffset(54)]

    [System.Runtime.InteropServices.FieldOffset(56)]

    [System.Runtime.InteropServices.FieldOffset(58)]

    [System.Runtime.InteropServices.FieldOffset(44)]

    [System.Runtime.InteropServices.FieldOffset(52)]

    [System.Runtime.InteropServices.FieldOffset(56)]

    [System.Runtime.InteropServices.FieldOffset(60)]

    [System.Runtime.InteropServices.FieldOffset(62)]

    [System.Runtime.InteropServices.FieldOffset(64)]

    [System.Runtime.InteropServices.FieldOffset(66)]

    [System.Runtime.InteropServices.FieldOffset(68)]

    [System.Runtime.InteropServices.FieldOffset(70)]

    [System.Runtime.InteropServices.FieldOffset(102)]

    [System.Runtime.InteropServices.FieldOffset(104)]

    [System.Runtime.InteropServices.FieldOffset(108)]

    [System.Runtime.InteropServices.FieldOffset(112)]

    [System.Runtime.InteropServices.FieldOffset(116)]

    [System.Runtime.InteropServices.FieldOffset(116)]

    [System.Runtime.InteropServices.FieldOffset(120)]

using System.Runtime.InteropServices;

Imports System.Runtime.InteropServices

        public int Timeout;                                            // Timeout, in seconds, of this junction point

public struct DATE_TIME

    public uint dwLowDateTime;

    public uint dwHighDateTime;

Structure DHCP_DATE_TIME

   Dim dwLowDateTime As Integer

   Dim dwHighDateTime As Integer

<System.Runtime.InteropServices.StructLayout(LayoutKind.Sequential)> _

        public UInt32 dwTimeStamp; // REVERSED from MS documentation

        public UInt32 dwTimeStamp { get { return header.dwTimeStamp;}}

public struct DynamicTimeZoneInformation

    public SystemTime StandardDate;

    public SystemTime DaylightDate;

    public string TimeZoneKeyName;

    public bool DynamicDaylightTimeDisabled;

     [MarshalAs(System.Runtime.InteropServices.UnmanagedType.LPWStr)]

    [MarshalAs(System.Runtime.InteropServices.UnmanagedType.LPWStr)]

    public UInt32 time;

    Public time As UInt32

       FD_CREATETIME     = 0x00000008,

       FD_ACCESSTIME     = 0x00000010,

       FD_WRITESTIME     = 0x00000020,

       public System.Runtime.InteropServices.ComTypes.FILETIME ftCreationTime;

       public System.Runtime.InteropServices.ComTypes.FILETIME ftLastAccessTime;

       public System.Runtime.InteropServices.ComTypes.FILETIME ftLastWriteTime;

    FD_CREATETIME = &H8

    FD_ACCESSTIME = &H10

    FD_WRITESTIME = &H20

<Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Sequential, CharSet:=Runtime.InteropServices.CharSet.Auto)>

    Public ftCreationTime As System.Runtime.InteropServices.ComTypes.FILETIME

    Public ftLastAccessTime As System.Runtime.InteropServices.ComTypes.FILETIME

    Public ftLastWriteTime As System.Runtime.InteropServices.ComTypes.FILETIME

    <Runtime.InteropServices.MarshalAs(Runtime.InteropServices.UnmanagedType.ByValTStr, SizeConst:=260)>

public struct FILETIME {

    public uint DateTimeLow;

    public uint DateTimeHigh;

Public Structure FILETIME

   Public dwLowDateTime As UInteger

   Public dwHighDateTime As UInteger

       Return CType(dwHighDateTime << 32, ULong) + dwLowDateTime

[System.Runtime.InteropServices.FILETIME] (obsolete), or [System.Runtime.InteropServices.ComTypes.FILETIME] in the .NET Framework 2.0.

There is no reason not to use [System.Runtime.InteropServices.ComTypes.FILETIME], but there still is a need for conversion to [DateTime]:

    public static DateTime FiletimeToDateTime(FILETIME fileTime) {

        long hFT2 = (((long) fileTime.dwHighDateTime) << 32) | ((uint) fileTime.dwLowDateTime);

        return DateTime.FromFileTimeUtc(hFT2);

    public static FILETIME DateTimeToFiletime(DateTime time) {

        FILETIME ft;

        long hFT1 = time.ToFileTimeUtc();

        ft.dwLowDateTime = (int) (hFT1 & 0xFFFFFFFF);

        ft.dwHighDateTime = (int) (hFT1 >> 32);

Actually, this is NOT working. The only solution I've found so far is using the API Kernel32.dll function FileTimeToSystemTime, then transforming from that into a regular DateTime.

* Note that System.Runtime.InteropServices.FILETIME is now obsolete. Changed to use System.Runtime.InteropServices.ComTypes.FILETIME instead.

    Private Shared Function ConvertFileTimeToDateTime(input As FILETIME) As DateTime

    Dim longTime As ULong = (CType(input.dwHighDateTime, ULong) << 32) Or input.dwLowDateTime

    Return DateTime.FromFileTime(longTime)

    struct FILETIME {

        private long timestamp;

        public DateTime Local {

            get { return DateTime.FromFileTime(this.timestamp); }

            set { this.timestamp = value.ToFileTime(); }

        public DateTime Utc {

            get { return DateTime.FromFileTimeUtc(this.timestamp); }

            set { this.timestamp = value.ToFileTimeUtc(); }

        public LargeInteger CreationTime;

        public LargeInteger LastAccessTime;

        public LargeInteger LastWriteTime;

        public LargeInteger ChangeTime;

    //     handle with the GMEM_SHARE flag. If the System.Runtime.InteropServices.ComTypes.STGMEDIUMSystem.Runtime.InteropServices.ComTypes.STGMEDIUM.pUnkForRelease

    //     The storage medium is a disk file identified by a path. If the STGMEDIUMSystem.Runtime.InteropServices.ComTypes.STGMEDIUM.pUnkForRelease

    //     ISequentialStream::Read to read the data. If the System.Runtime.InteropServices.ComTypes.STGMEDIUMSystem.Runtime.InteropServices.ComTypes.STGMEDIUM.pUnkForRelease

    //     If the System.Runtime.InteropServices.ComTypes.STGMEDIUMSystem.Runtime.InteropServices.ComTypes.STGMEDIUM.pUnkForRelease

    //     If the System.Runtime.InteropServices.ComTypes.STGMEDIUMSystem.Runtime.InteropServices.ComTypes.STGMEDIUM.pUnkForRelease

    //     to access the metafile's data. If the System.Runtime.InteropServices.ComTypes.STGMEDIUMSystem.Runtime.InteropServices.ComTypes.STGMEDIUM.pUnkForRelease

    //     The storage medium is an enhanced metafile. If the System.Runtime.InteropServices.ComTypes.STGMEDIUMSystem.Runtime.InteropServices.ComTypes.STGMEDIUM.pUnkForRelease

    '     handle with the GMEM_SHARE flag. If the System.Runtime.InteropServices.ComTypes.STGMEDIUMSystem.Runtime.InteropServices.ComTypes.STGMEDIUM.pUnkForRelease

    '     The storage medium is a disk file identified by a path. If the STGMEDIUMSystem.Runtime.InteropServices.ComTypes.STGMEDIUM.pUnkForRelease

    '     ISequentialStream::Read to read the data. If the System.Runtime.InteropServices.ComTypes.STGMEDIUMSystem.Runtime.InteropServices.ComTypes.STGMEDIUM.pUnkForRelease

    '     If the System.Runtime.InteropServices.ComTypes.STGMEDIUMSystem.Runtime.InteropServices.ComTypes.STGMEDIUM.pUnkForRelease

    '     If the System.Runtime.InteropServices.ComTypes.STGMEDIUMSystem.Runtime.InteropServices.ComTypes.STGMEDIUM.pUnkForRelease

    '     to access the metafile's data. If the System.Runtime.InteropServices.ComTypes.STGMEDIUMSystem.Runtime.InteropServices.ComTypes.STGMEDIUM.pUnkForRelease

    '     The storage medium is an enhanced metafile. If the System.Runtime.InteropServices.ComTypes.STGMEDIUMSystem.Runtime.InteropServices.ComTypes.STGMEDIUM.pUnkForRelease

     public int DefaultRevocationFreshnessTime;

     public int DefaultRevocationUrlRetrievalTimeout;

  public Int32 RoundTripTime;

        public UInt32 TimeDateStamp;

    Public TimeDateStamp As Integer

            public UInt32 TimeDateStamp;

    ''' Indicates the time when the file was created. This value is the number  

    ''' of seconds since January 1, 1970, Greenwich Mean Time (GMT). This value  

    ''' file system date/time.

    Public TimeDateStamp As UInt32

      ' Indicates the time when the file was created. This value is the number of seconds since

      ' January 1, 1970, Greenwich Mean Time (GMT).  This value is a more accurate indicator of

      ' when the file was created than is the file system date/time.

      TimeDateStamp As Long

        IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER = 12,

        public IMAGE_DATA_DIRECTORY CLRRuntimeHeader;

        public IMAGE_DATA_DIRECTORY CLRRuntimeHeader;

    ''' runtime library code that calls the aforementioned functions. This field can  

    ''' The ImageBase can be set at link time with the /BASE switch, or later with the  

    ''' At one time, it was used to indicate that the newer Windows 95 or Windows NT 4.0  

    ' or DllMain, rather, it points to runtime library code that calls the aforementioned functions.

    ' The ImageBase can be set at link time with the /BASE switch, or later with the REBASE utility.

    ' At one time, it was used to indicate that the newer Windows 95 or Windows NT 4.0 user interface was

    ' or DllMain, rather, it points to runtime library code that calls the aforementioned functions.

    ' The ImageBase can be set at link time with the /BASE switch, or later with the REBASE utility.

    ' At one time, it was used to indicate that the newer Windows 95 or Windows NT 4.0 user interface was

    public IMAGE_DATA_DIRECTORY CLRRuntimeHeader;

        IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER = 12,

     ICC_DATE_CLASSES       = 0x00000100, // month picker, date picker, time picker, updown

    ' month picker, date picker, time picker, updown

  public byte TimeToLive;

   public SYSTEMTIME Submitted;

    public uint time;

        Public time As UInt32

    public time As UInt32

        public long StartTime;

        public long EndTime;

        public long RenewTime;

        internal int time;

  Public time As Integer

        public UInt32 dwTime;

    Public dwTime As Integer

     dwTime : uint32

dwTime does wrap around. Watch out for that, and beware of casting to a signed.

2) The FromLogFont method in VB .NET returned "Times New Roman" as the Font.name for many LogFont.lfFaceName that were not "Times New Roman."

The .NET Framework class Font, has a method, Font::FromLogfont that takes an Object reference as it's method parameter. You must define a managed LOGFONT class using the same format as the C# signature above. When using the StructLayout attribute on the class definition, you must set the CharSet property to Auto (the default is Ansi, which will not work correctly). The only difficulty encountered is passing the string value (the designated Font Face Name) to the FromLogfont method; apparently, this must have the attribute: [MarshalAs(UnmanagedType::ByValTStr)] enum value for the method to work correctly. Then, when instantiating a new Font in your managed application, you must cast the LOGFONT class (with appropriate member values assigned) to a System::Object for the function to work without generating a runtime exception.

    uint DozeTimeoutAc;

    uint DozeTimeoutDc;

    uint DozeS4TimeoutAc;

    uint DozeS4TimeoutDc;

        Private DozeTimeoutAc As UInteger

        Private DozeTimeoutDc As UInteger

        Private DozeS4TimeoutAc As UInteger

        Private DozeS4TimeoutDc As UInteger

    public string lpszDateReceived = DateTime.Now.ToString("yyyy/MM/dd HH:mm");

    /// <remarks>MEMORYSTATUSEX reflects the state of memory at the time of the call. It also

    /// reflects the size of the paging file at that time. The operating system can enlarge

mi.cbSize = System.Runtime.InteropServices­.Marshal.SizeOf(typeof(MENUINF­O));

private const uint MIXERCONTROL_CT_CLASS_TIME   = 0x60000000u;

private const uint MIXERCONTROL_CT_SC_TIME_MICROSECS = 0x00000000u;

private const uint MIXERCONTROL_CT_SC_TIME_MILLISECS = 0x01000000u;

     MICROTIME      =(MIXERCONTROL_CT_CLASS_TIME | MIXERCONTROL_CT_SC_TIME_MICROSECS | MIXERCONTROL_CT_UNITS_UNSIGNED),

     MILLITIME      =(MIXERCONTROL_CT_CLASS_TIME | MIXERCONTROL_CT_SC_TIME_MILLISECS | MIXERCONTROL_CT_UNITS_UNSIGNED),

struct MmTime {

    Public Structure MmTime

        internal uint time;

  Public time As Integer

    public int time;

    Public time As Int32

   UCHAR   ncb_rto;        /* rcv timeout/retry count    */

   UCHAR   ncb_sto;        /* send timeout/sys timeout       */

    /// NOTE: This field is also used for the Timeout value. Specifies whether the Shell notify

using System.Runtime.InteropServices

    public int uTimeoutOrVersion;

    Dim uTimeout As Integer ' ignore the uVersion union

    ''' The first time your application creates the dialog box,

    ''' The system uses the strings to initialize the user-defined file filter the next time

        public byte LatencyTimer;

[System.Runtime.InteropServices.ComVisible(false)]        

        public uint StartTime;

        public uint UntilTime;

        Public StartTime As Integer

        Public UntilTime As Integer

        public uint DeviceNotSelectedTimeout;

        public uint TransmissionRetryTimeout;

     public int dwTimeoutErr;

     Public dwTimeoutErr As Integer

    <System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Sequential)> _

    public UInt64 Timeout;

   <FieldOffset(16)> Public Timeout As Long          'DWORDLONG Timeout;

Imports System.Runtime.InteropServices