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/// <param name="dwTimeout">The maximum amount of time, in milliseconds, to wait for an action. A value of zero causes the function to return immediately. A value of INFINITE causes this function never to time out.</param>

static extern SCardFunctionReturnCodes SCardGetStatusChange(int hContext, int dwTimeout, [In, Out] SCARD_READERSTATE[] rgReaderStates, int cReaders);

SCARD_E_TIMEOUT = 0x8010000A,

Summary

The SCardStatus function provides the current status of a smart card in a reader. You can call it any time after a successful call to SCardConnect and before a successful call to SCardDisconnect. It does not affect the state of the reader or reader driver.

request.cbPciLength = System.Runtime.InteropServices.Marshal.SizeOf(typeof(UnsafeNativeMethods.SCARD_IO_REQUEST));

internal static extern uint SCardGetStatusChange(IntPtr hContext, UInt32 dwTimeout, [In, Out] SCARD_READERSTATE[] rgReaderStates, UInt32 cReaders);

System.Runtime.InteropServices.ComTypes.FILETIME ftDriverDate;

FILETIME ftDriverDate;

FILETIME ftMinInboxDriverVerDate;

Public Submitted As SYSTEMTIME

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Auto)> Structure SYSTEMTIME

Imports System.Runtime.InteropServices

'deserialize data one job at a time

using System.Runtime.InteropServices;

You will need to import System.Runtime.InteropServices

You will need to import System.Runtime.InteropServices.

Optionally call SendMessageTimeout() to notify running programs of the change:

pinvokeResult = SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, IntPtr.Zero,

IntPtr.Zero, SendMessageTimeoutFlags.SMTO_NORMAL, 1000, out innerPinvokeResult);

pinvokeResult = SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, IntPtr.Zero,

IntPtr.Zero, SendMessageTimeoutFlags.SMTO_NORMAL, 1000, out innerPinvokeResult);

var obj = System.Runtime.InteropServices.Marshal.BindToMoniker("IIS://localhost/W3SVC") as IADs;

Required referenece to System, System.Security, System.Runtime.InteropServices, System.Reflection Namespaces.

[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]

<MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)>

[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]

<MethodImpl(MethodImplOptions.InternalCall, MethodCodeType:=MethodCodeType.Runtime)> _

MethodCodeType=MethodCodeType.Runtime)]

using System.Runtime.InteropServices;

using System.Runtime.CompilerServices;

INET_E_CONNECTION_TIMEOUT = 0x800C000B,

case HRESULTS.INET_E_CONNECTION_TIMEOUT:

Description = "Connection Timeout.";break;

using System.Runtime.InteropServices;

Imports System.Runtime.InteropServices

Also available in System.Runtime.InteropServices.ComTypes

Imports System.Runtime.InteropServices

Public time As UInt32

Imports System.Runtime.InteropServices

Public time As UInt32

Imports System.Runtime.InteropServices

I've encountered exactly the same unreliable (sometimes called, sometimes not) behavior in vb .net 2005, when using BSTR, LPWSTR version works fine.

using IDataObject_Com = System.Runtime.InteropServices.ComTypes.IDataObject;

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

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

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

Summary

Part of the Task Scheduler 1.0 Interfaces, which consists of IEnumWorkItems, ITask, ITaskScheduler, ITaskTrigger and IScheduledWorkItem. There is some helper code below for actually using the iterator as the marshalling seemed impossible without resorting to the unmanaged helper functions in System.Runtime.InteropServices.Marshal. Not all methods have been tested, so be careful!

using System.Runtime.InteropServices;

[System.Runtime.InteropServices.InterfaceType(1)]

[System.Runtime.InteropServices.Guid("3127CA40-446E-11CE-8135-00AA004BB851")]

void AddError(string pszPropName, ref System.Runtime.InteropServices.ComTypes.EXCEPINFO pExcepInfo);

GetIconLocation() must be declared before Extract()! If you don't, you will get a cryptic runtime error (Read/write of protected memory).

[MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime ), PreserveSig]

[MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]

[MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime ), PreserveSig]

[MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]

[MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime ), PreserveSig]

[MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]

[MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime ), PreserveSig]

[MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]

// time

' date and time of the last write to the file, size, and so on; and by

using System.Runtime.InteropServices;

Imports System.Runtime.InteropServices

[MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]

void Stat(out System.Runtime.InteropServices.STATSTG pstatstg, int grfStatFlag);

<Runtime.InteropServices.ComImport()> _

<Runtime.InteropServices.InterfaceType(Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)> _

<Runtime.InteropServices.Guid("00000002-0000-0000-C000-000000000046")> _

<Runtime.InteropServices.PreserveSig()> Function Alloc(ByVal cb As UInt32) As IntPtr

<Runtime.InteropServices.PreserveSig()> Function Realloc(ByVal pv As IntPtr, ByVal cb As UInt32) As IntPtr

<Runtime.InteropServices.PreserveSig()> Sub Free(ByVal pv As IntPtr)

<Runtime.InteropServices.PreserveSig()> Function GetSize(ByVal pv As IntPtr) As UInt32

<Runtime.InteropServices.PreserveSig()> Function DidAlloc(ByVal pv As IntPtr) As Int16

<Runtime.InteropServices.PreserveSig()> Sub HeapMinimize()

/// <param name="phEnum">[in, out] A pointer to the enumerator. This must be a null value when the EnumAssemblyRefs method is called for the first time.</param>

/// <param name="phEnum">[in, out] A pointer to the enumerator. This must be a null value when the <c>EnumExportedTypes</c> method is called for the first time.</param>

/// <param name="phEnum">[in, out] A pointer to the enumerator. This must be a null value when the <c>EnumManifestResources</c> method is called for the first time.</param>

/// Gets an array of assemblies with the specified <c>szAssemblyName</c> parameter, using the standard rules employed by the common language runtime (CLR) for resolving references.

afRetargetable = 0x0100, // The assembly can be retargeted (at runtime) to an

tdBeforeFieldInit = 0x00100000, // Initialize the class any time before first static field access.

// Flags reserved for runtime use.

tdRTSpecialName = 0x00000800, // Runtime should check name encoding.

Furthermore, you cannot load multiple times the assembly by using "Assembly.ReflectionOnlyLoad", even if it's file was overwritten with the newer version.

/// <param name="rclsid">[in] The CLSID of the version of metadata structures to be created. This value must be CLSID_CorMetaDataRuntime.</param>

/// <param name="szScope">[in] The name of the file to be opened. The file must contain common language runtime (CLR) metadata.</param>

[MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime ), PreserveSig]

using System.Runtime.InteropServices;

Requires reference to System.Runtime.InteropServices.

Here is some complete code for the two classes that are required to fully utilize the IOleCommandTarget COM interface as referenced on http://msdn.microsoft.com/en-us/library/office/aa701079(v=office.12).aspx#infopath2007hostinginfopathforms_notavailable . I am posting this becasue we all know how MS likes to make links and pages disappear from time to time. While they are still valid, you can get example projects at: http://www.microsoft.com/en-us/download/details.aspx?id=21356 InfoPath2007UsingIOLECommands.exe and InfoPath2007UsingIOLECommandsCOM.exe. Happy InfoPathing! If there is such a thing. The happy part that is...

using System.Runtime.InteropServices;

throw new NonApplicableCommandException("The command could not be executed at this time because it is not applicable. Command: " +

Sub GetWindow(<System.Runtime.InteropServices.Out()> ByRef phwnd As IntPtr)

Note

.Net2 now includes this definition in System.Runtime.InteropServices.Comtypes namespace, but doesn't include return values for the methods

48: IProgressDialog

/// <param name="dwCompleted">An application-defined value that indicates what proportion of the operation has been completed at the time the method was called.</param>

/// <param name="ullCompleted">An application-defined value that indicates what proportion of the operation has been completed at the time the method was called.</param>

/// <param name="dwLineNum">The line number on which the text is to be displayed. Currently there are three lines—1, 2, and 3. If the PROGDLG_AUTOTIME flag was included in the dwFlags parameter when IProgressDialog::StartProgressDialog was called, only lines 1 and 2 can be used. The estimated time will be displayed on line 3.</param>

/// <remarks>This function is typically used to display a message such as "Item XXX is now being processed." typically, messages are displayed on lines 1 and 2, with line 3 reserved for the estimated time.</remarks>

/// next time it calls IProgressDialog::HasUserCancelled to discover that the user has canceled the

/// Resets the progress dialog box timer to zero.

/// <param name="dwTimerAction">Flags that indicate the action to be taken by the timer.</param>

/// The timer is used to estimate the remaining time. It is started when your application

/// it should call Timer just before starting the operation.

/// This practice ensures that the time estimates will be as accurate as possible. This method

void Timer(

PDTIMER dwTimerAction, //DWORD

PROGDLG, PDTIMER, PathCompactPath

pd.StartProgressDialog(this.Handle, null, PROGDLG.Modal | PROGDLG.AutoTime | PROGDLG.NoMinimize, IntPtr.Zero);

pd.Timer(PDTIMER.Reset, null);

49: IPropertyStore

[MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]

<MethodImpl(MethodImplOptions.InternalCall, MethodCodeType:=MethodCodeType.Runtime)>

50: IScheduledWorkItem

int GetRunTimes( ref SYSTEMTIME pstBegin,

ref SYSTEMTIME pstEnd,

out SYSTEMTIME rgstTaskTimes);

int GetNextRunTime( ref SYSTEMTIME pstNextRun);

int GetMostRecentRunTime( out SYSTEMTIME pstLastRun);

51: IShellItemArray

[MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]

52: IShellItemFilter

[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime), PreserveSig]

53: IStorage

void SetElementTimes(

/* [unique][in] */ FILETIME pctime,

/* [unique][in] */ FILETIME patime,

/* [unique][in] */ FILETIME pmtime);

Sub SetElementTimes(ByVal pwcsName As String,

ByVal pctime As FILETIME,

ByVal patime As FILETIME,

ByVal pmtime As FILETIME)

FILETIME

54: IStream

[System.Runtime.InteropServices.ComTypes.IStream] in the .NET Framework 2.0.

55: ITask

TASK_TIME_TRIGGER_ONCE = 0, // Ignore the Type field.

TASK_TIME_TRIGGER_DAILY = 1, // Use DAILY

TASK_TIME_TRIGGER_WEEKLY = 2, // Use WEEKLY

TASK_TIME_TRIGGER_MONTHLYDATE = 3, // Use MONTHLYDATE

TASK_TIME_TRIGGER_MONTHLYDOW = 4, // Use MONTHLYDOW

56: ITaskScheduler

using System.Runtime.InteropServices;

57: ITaskTrigger

TASK_TIME_TRIGGER_ONCE = 0,

TASK_TIME_TRIGGER_DAILY = 1,

TASK_TIME_TRIGGER_WEEKLY = 2,

TASK_TIME_TRIGGER_MONTHLYDATE = 3,

TASK_TIME_TRIGGER_MONTHLYDOW = 4,

58: IUICollection

Summary

The IUICollectionChangedEvent interface is implemented by the application and defines the method required to handle changes to a collection at run time.

59: IUIContextualUI

// Typically this is the mouse location at the time of right click.

60: IUnknown

It is usually not necessary to call IUnknown's methods directly in your .NET code. The interop runtime code will insert the appropriate method calls for reference counting when the managed proxy objects are created and freed, and will translate typecast, "is", and "as" operators into calls to QueryInterface.

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