//SetBitmap(hWnd, (isPlaylistVisible ? IDB_RESTORE_PRESSED : IDB_CLOSE_PRESSED));

        EMR_CLOSEFIGURE        = 61,

    LINE_CLOSE = 3,

    /// in the resource file closest to the desired size. This will succeed only if hImage was loaded by LoadIcon or LoadCursor,

    ''' in the resource file closest to the desired size. This will succeed only if hImage was loaded by LoadIcon or LoadCursor,

const int _O_TEMPORARY   = 0x0040;  /* Temporary file bit - file is deleted when last handle is closed */

    public static PropertyKey PKEY_RecordedTV_IsClosedCaptioningAvailable = new PropertyKey( 0x6D748DE2, 0x8D38, 0x4CC3, 0xAC, 0x60, 0xF0, 0x09, 0xB0, 0x57, 0xC5, 0x57, 12);

    public static PropertyKey PKEY_Search_IsClosedDirectory = new PropertyKey( 0x0B63E343, 0x9CCC, 0x11D0, 0xBC, 0xDB, 0x00, 0x80, 0x5F, 0xCC, 0xCE, 0x04, 23);

    public static PropertyKey WPD_COMMAND_OBJECT_RESOURCES_CLOSE = new PropertyKey(0xB3A2B22D, 0xA595, 0x4108, 0xBE, 0x0A, 0xFC, 0x3C, 0x96, 0x5F, 0x3D, 0x4A, 7);

        static extern bool CloseHandle(IntPtr hHandle);

                    CloseHandle(hToken);

    public const int SEE_MASK_NOCLOSEPROCESS    = 0x00000040;

    public const int SEE_MASK_NOCLOSEPROCESS    = 0x00000040;

private const uint FILE_FLAG_DELETE_ON_CLOSE     = 0x04000000;

public const int FSCTL_OPBATCH_ACK_CLOSE_PENDING = 0x00090010;

public const int FSCTL_WRITE_USN_CLOSE_RECORD = 0x000900ef;

        /// The semaphore is set and cannot be closed.

        /// The pipe is being closed.

        /// The network connection was gracefully closed.

        /// The RPC pipe object has already been closed.

        public const int RPC_X_PIPE_CLOSED = 1916;

        /// Unable to open or close the inject/eject port.

        /// A close operation is pending on the session.

        public const int ERROR_CTX_CLOSE_PENDING = 7007;

        /// The unicodePwd attribute value must be enclosed in double quotes.

        /// The Global catalog server is not in the closest site.

        public const int ERROR_DS_NOT_CLOSEST = 8588;

        /// An existing connection was forcibly closed by the remote host.

        public const int ERROR_SXS_XML_E_EXPECTINGCLOSEQUOTE = 14045;

        /// Manifest Parse Error : The following tags were not closed: %1.

        public const int ERROR_SXS_XML_E_UNCLOSEDTAG = 14052;

        /// Manifest Parse Error : Element was not closed.

        public const int ERROR_SXS_XML_E_UNCLOSEDSTARTTAG = 14060;

        public const int ERROR_SXS_XML_E_UNCLOSEDENDTAG = 14061;

        /// Manifest Parse Error : A string literal was not closed.

        public const int ERROR_SXS_XML_E_UNCLOSEDSTRING = 14062;

        /// Manifest Parse Error : A comment was not closed.

        public const int ERROR_SXS_XML_E_UNCLOSEDCOMMENT = 14063;

        /// Manifest Parse Error : A declaration was not closed.

        public const int ERROR_SXS_XML_E_UNCLOSEDDECL = 14064;

        /// Manifest Parse Error : A CDATA section was not closed.

        public const int ERROR_SXS_XML_E_UNCLOSEDCDATA = 14065;

        /// CloseClipboard Failed

        public const int CLIPBRD_E_CANT_CLOSE = (int)(0x800401D4 - 0x100000000);

        /// XACT_E_TRANSACTIONCLOSED

        public const int XACT_E_TRANSACTIONCLOSED = (int)(0x8004D083 - 0x100000000);

        /// Unable to close a serialization handle or a file handle.

        public const int CO_E_FAILEDTOCLOSEHANDLE = (int)(0x80010138 - 0x100000000);

        /// Final closure is pending until additional frees or closes.

        public const int CRYPT_E_PENDING_CLOSE = (int)(0x8009200F - 0x100000000);

        public const int OSS_CANT_CLOSE_TRACE_FILE = (int)(0x8009302E - 0x100000000);

private const UInt32 WM_CLOSE          = 0x0010;

   WM_CLOSE = &H10

WM_CLOSE          equ 010h

private void CloseCdCommand()

     mciSendString("set CDAudio door closed", rt, 127, IntPtr.Zero);

    private static extern uint midiInClose(IntPtr hMidiIn);

static extern uint midiOutClose(IntPtr hMidiOut);

Declare Function midiOutClose Lib "winmm.dll" (ByRef phMidiOut As IntPtr) As Uinteger

The device should be disposed with midiOutClose when not needed anymore.

extern static Int32 midiStreamClose(IntPtr hMidiStream);

Public Declare Function midiStreamClose Lib "winmm.dll" (ByVal hMidiStream As IntPtr) As Integer

static extern Int32 mixerClose(IntPtr hmx);

Declare Function mixerClose Lib "winmm.dll" (ByVal hmx As IntPtr) As Integer

      oWriter.Close();

static extern uint waveInClose(IntPtr hwi);

Shared Function waveInClose(<MarshalAs(UnmanagedType.I4)> ByVal hwi As Integer) As MMRESULT

public static extern uint waveOutClose(IntPtr hwo);

Declare Auto Function waveOutClose Lib "winmm.dll" (ByVal hwo As IntPtr) As UInteger

I release the unmanaged memory allocated in the Open() method in the class's Close method:

        MM_WIM_CLOSE = 0x03BF,

  WIM_CLOSE = &H3BF

        PNP_VetoPendingClose = 2,

Private Declare Sub CloseHandle Lib “kernel32″ _

(ByVal HandleToClose As Long)

CloseHandle DeviceHandle

public static extern void SetupCloseInfFile(IntPtr InfHandle);

Public Declare Auto Sub SetupCloseInfFile Lib "setupapi.dll" (ByVal InfHandle As IntPtr)

     SetupCloseInfFile(infHandle);

    SetupCloseInfFile(infHandle)

     SetupCloseInfFile(infHandle);

    SetupCloseInfFile(infHandle)

     SetupCloseInfFile(infHandle);

    SetupCloseInfFile(infHandle)

     SetupCloseInfFile(infHandle);

    SetupCloseInfFile(infHandle)

     SetupCloseInfFile(infHandle);

    SetupCloseInfFile(infHandle)

     SetupCloseInfFile(infHandle);

    SetupCloseInfFile(infHandle)

/// Searches a path for spaces. If spaces are found, the entire path is enclosed in quotation marks.

''' Searches a path for spaces. If spaces are found, the entire path is enclosed in quotation marks.

    public const int CERT_STORE_DEFER_CLOSE_UNTIL_LAST_FREE_FLAG = 0x00000004;

    Public Const CERT_STORE_DEFER_CLOSE_UNTIL_LAST_FREE_FLAG As Integer = &H4

   public POWER_ACTION_POLICY LidCloseAc;

   public POWER_ACTION_POLICY LidCloseDc;

   Public LidCloseAc As POWER_ACTION_POLICY

   Public LidCloseDc As POWER_ACTION_POLICY

    HTCLOSE = 20,

    /// In a Close button.

    HTCLOSE = 20,

    /// In a window menu or in a Close button in a child window.

     HTCLOSE = 20

The handle returned in the PROCESS_INFORMATION structure should be closed explicitly.

    public UInt32 ReturnOnlyOnClose;

   <FieldOffset(12)> Public ReturnOnlyOnClose As Integer     'DWORD ReturnOnlyOnClose;  

public extern static int CloseHandle(IntPtr hObject);

     CloseHandle(h);

   Public CloseState As TBBStates

   CloseHandle(h);

   CloseHandle(h);

   CloseHandle(h);

   CloseHandle(h);

   CloseHandle(h);

    Close = 0x80000000

        Close = 0x00000002,

WindowClosing event is never fired when implemented with 2.0 .Net Fx. Workaround available at http://blogs.msdn.com/jpsanders/archive/2007/05/25/how-to-close-the-form-hosting-the-webbrowser-control-when-scripting-calls-window-close-in-the-net-framework-version-2-0.aspx>