public IntPtr hwndOwner;

    '  HWND      hwndOwner;

typedef UINT_PTR (CALLBACK *LPOFNHOOKPROC) (HWND,UINT,WPARAM,LPARAM);

     HWND hwndOwner;

    ofn.hwndOwner = NULL;

    '  HWND      hwndOwner;

        _pdex.hwndOwner = m_hParent

    Public hwndOwner As IntPtr

        _pdex.hwndOwner = m_hParent

    Public hwndOwner As IntPtr

static extern int MsiSetInternalUI(int dwUILevel, ref IntPtr phWnd);

static extern int MsiSetInternalUI(INSTALLUILEVEL dwUILevel, ref IntPtr phWnd);

Private Function MsiSetInternalUI(dwUILevel As INSTALLUILEVEL, ByRef phWnd As IntPtr) As Integer

IntPtr hwnd = IntPtr.Zero;

MsiUtils.MsiSetInternalUI(MsiUtils.INSTALLUILEVEL.INSTALLUILEVEL_NONE , ref hwnd);

private static extern int WNetAddConnection3(IntPtr hWndOwner,

    ''' <param name="hWndOwner"></param>

    Private Shared Function WNetAddConnection3(ByVal hWndOwner As IntPtr, _

WNetAddConnection3(hWnd, ref ConnInf, null, null,

private static extern int WNetAddConnection3(IntPtr hWndOwner,

    ''' <param name="hWndOwner"></param>

    Private Shared Function WNetAddConnection3(ByVal hWndOwner As IntPtr, _

WNetAddConnection3(hWnd, ref ConnInf, null, null,

    IntPtr      hwndOwner,

    public IntPtr hwndOwner;

     Public hwndOwner As IntPtr

   public IntPtr hwnd;

• Desktop handle to the window specified by hwnd. This is returned only if BroadcastSystemMessageEx specifies BSF_RETURNHDESK and BSF_QUERY.

• hwnd

        public IntPtr        hwnd;          // might be NULL (indicating no owner window)

    public IntPtr hwndCombo;

    public IntPtr hwndEdit;

    public IntPtr hwndList;

    hwndCombo As Long

    hwndEdit As Long

    hwndList As Long

   SendMessage(hWnd, WM_COPYDATA, IntPtr.Zero, copyDataBuff);

        public IntPtr hwndParent;

        Public hwndParent As IntPtr

            public IntPtr hwndParent;

    Public hwndParent As IntPtr

    public IntPtr hwndApp;

    Public hwndApp As IntPtr

     IntPtr hWnd;

        public IntPtr hwnd;

        Public hWnd As IntPtr

    public IntPtr hwnd;

    Public hwnd As IntPtr

    public IntPtr        hwndActive;

    public IntPtr        hwndFocus;

    public IntPtr        hwndCapture;

    public IntPtr        hwndMenuOwner;

    public IntPtr        hwndMoveSize;

    public IntPtr        hwndCaret;

    Public hwndActive As IntPtr

    Public hwndFocus As IntPtr

    Public hwndCapture As IntPtr

    Public hwndMenuOwner As IntPtr

    Public hwndMoveSize As IntPtr

    Public hwndCaret As IntPtr

    public IntPtr hwnd;

    public IntPtr hwnd;

    public IntPtr hwndOwner;

   public IntPtr hwndFrom;

   Public hwndFrom As IntPtr

    /// taskbar status area. The Shell uses hWnd and uID to identify which icon to operate on

    public IntPtr hwnd;

    /// Application-defined identifier of the taskbar icon. The Shell uses hWnd and uID to identify

    /// associated with a single hWnd by assigning each a different uID.

    /// notifications to the window identified in hWnd.

    public IntPtr hWnd;

    Dim hWnd As IntPtr

   public IntPtr hWnd;

    int hwndOwner;

    Public hwndOwner As IntPtr  

   public IntPtr hwndOwner;

    Public hwndOwner As IntPtr

    public IntPtr hwndOwner;        

   public int hwndParent = 0;

        Dim hwnd As IntPtr

        Dim hwnd As IntPtr

        SetReaderModeInfo.hwnd = Me.Handle

        public IntPtr hwndChild;

    public IntPtr hwnd;

     Public hwnd As IntPtr

     hWnd As Long

• Always set hwnd to my main app window (I was using IntPtr.Zero, this might not be required)
An IntPtr is a pointer to a memory location (unmanaged) that adapts to the platform it is running on (64-bit, etc.) UNLIKE a standard int/Integer. You should always use this type for unmanaged calls that require it, even though an int will appear to work on your development machine.
1/13/2008 4:00:13 AM - Damon Carr-72.43.165.29

        public static extern bool GetTitleBarInfo(IntPtr hwnd, ref TITLEBARINFO pti);

   public IntPtr hwnd;

    Public hwnd As IntPtr

   public IntPtr  hwndTrack;

   Public hwndTrack As IntPtr

        public IntPtr hwnd;

        public IntPtr hwndInsertAfter;

        Public hwnd As IntPtr

        Public hwndInsertAfter As IntPtr

    static extern System.UInt16  SetWindowRgn(IntPtr hWnd, IntPtr hRgn, bool bRedraw);

        static extern IntPtr GetDC(IntPtr hWnd);

        static extern IntPtr GetDC(IntPtr hWnd);

            Graphics graphics = Graphics.FromHwnd(IntPtr.Zero);

            Graphics graphics = Graphics.FromHwnd(IntPtr.Zero);

    Graphics vGraphics = Graphics.FromHwnd(Handle);

        static extern IntPtr GetDC(IntPtr hWnd);

        using (System.Drawing.Graphics g = System.Drawing.Graphics.FromHwnd(IntPtr.Zero))

        Using g As System.Drawing.Graphics = System.Drawing.Graphics.FromHwnd(IntPtr.Zero)

        Graphics g = Graphics.FromHwnd(IntPtr.Zero);

  static extern IntPtr GetDC(IntPtr hwnd);

  static extern Int32 ReleaseDC(IntPtr hwnd, IntPtr hdc);

      static extern IntPtr GetDC(IntPtr hwnd);

      static extern Int32 ReleaseDC(IntPtr hwnd, IntPtr hdc);

    private static IntPtr HWND_BROADCAST = new IntPtr(0xffff);

    private static IntPtr HWND_TOP = new IntPtr(0);

    private static IntPtr HWND_BOTTOM = new IntPtr(1);

    private static IntPtr HWND_TOPMOST = new IntPtr(-1);

    private static IntPtr HWND_NOTOPMOST = new IntPtr(-2);

    private static IntPtr HWND_MESSAGE = new IntPtr(-3);

    private static extern int SendMessage(IntPtr hWnd, WindowsMessages wMsg, IntPtr wParam, IntPtr lParam);

        long result = SendMessage(HWND_BROADCAST, WindowsMessages.WM_FONTCHANGE, IntPtr.Zero, IntPtr.Zero);

public static extern IntPtr GetDC(IntPtr hWnd);

public static extern IntPtr GetDC(IntPtr hWnd);

    Graphics vGraphics = Graphics.FromHwnd(Handle);

    Using G = Graphics.FromHwnd(Me.Handle)

private static extern bool CeGetUserNotificationPreferences(IntPtr hWndParent, byte[] lpNotification);

private static extern bool CeGetUserNotificationPreferences(IntPtr hWndParent, byte[] lpNotification);

static extern int ChangeDisplaySettingsEx(string lpszDeviceName, ref DEVMODE lpDevMode, IntPtr hwnd, int dwflags, IntPtr lParam);

Declare Function ChangeDisplaySettingsEx Lib "coredll.dll" (ByVal lpszDeviceName As String, ByVal lpDevMode As Byte(), ByVal hwnd As IntPtr, ByVal dwflags As CDSFlags, ByVal lParam As IntPtr) As CDSRet

        ref DEVMODE lpDevMode, IntPtr hwnd, int dwflags, IntPtr lParam);

    Friend Shared Function ChangeDisplaySettingsEx(ByVal lpszDeviceName As String, ByVal lpDevMode As Byte(), ByVal hwnd As IntPtr, ByVal dwflags As CDSFlags, ByVal lParam As IntPtr) As CDSRet

hwnd

in Specifies the scope of this function. Set to TGF_SCOPE_WINDOW to disable gestures for the window indicated by hwnd. Set to TGF_SCOPE_PROCESS to disable gestures for the application process.

    public static extern bool DisableGestures(IntPtr hwnd, UInt64 TGFflags, uint scope);

hwnd

in Specifies the scope of this function. Set to TGF_SCOPE_WINDOW to enable gestures for the window indicated by hwnd. Set to TGF_SCOPE_PROCESS to enable gestures for the application process.

public static extern bool EnableGestures(IntPtr hwnd, UInt64 TGFflags, uint scope);

private static extern IntPtr GetDC(IntPtr hwnd);

    private static extern IntPtr GetDC(IntPtr hwnd);

    public const int HWND_TOP = 0;

    public const int HWND_BOTTOM = 1;

    public const int HWND_TOPMOST = -1;

    public const int HWND_NOTOPMOST = -2;

private static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int cx, int cy, uint uFlags);

Private Shared Function SetWindowPos(ByVal hWnd As IntPtr, _

     ByVal hWndInsertAfter As IntPtr, _

public IntPtr GetHWnd(Control ctrl)

   IntPtr hWnd = GetCapture();

   return hWnd;

    IntPtr hWnd = GetCapture();

    SetWindowPos(hWnd,

        hWnd,

static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X,