pinvoke.net: Edit: user32.UnhookWindowsHookEx

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Summary: The UnhookWindowsHookEx API

!!!!C# Signature:
 /// <summary>
 ///     Removes a hook procedure installed in a hook chain by the SetWindowsHookEx function.
 ///     <para>
 ///         See [ https://msdn.microsoft.com/en-us/library/windows/desktop/ms644993%28v=vs.85%29.aspx ] for more
 ///         information
 ///     </para>
 /// </summary>
 /// <param name="hhk">
 ///     C++ ( hhk [in]. Type: HHOOK )<br />A handle to the hook to be removed. This parameter is a hook
 ///     handle obtained by a previous call to <see cref="SetWindowsHookEx" />.
 /// </param>
 /// <returns>
 ///     C++ ( Type: BOOL )
 ///     <c>true</c> or nonzero if the function succeeds, <c>false</c> or zero if the function fails.
 ///     <para>
 ///         To get extended error information, call
 ///         <see cref="!:https://msdn.microsoft.com/en-us/library/windows/desktop/ms679360%28v=vs.85%29.aspx">GetLastError</see>
 ///         .
 ///     </para>
 ///     <para>The return value is the calling thread's last-error code.</para>
 ///     The Return Value section of the documentation for each function that sets the last-error code notes the conditions
 ///     under which the function sets the last-error code. Most functions that set the thread's last-error code set it when
 ///     they fail. However, some functions also set the last-error code when they succeed. If the function is not
 ///     documented to set the last-error code, the value returned by this function is simply the most recent last-error
 ///     code to have been set; some functions set the last-error code to 0 on success and others do not.
 ///     <para></para>
 /// </returns>
 /// <remarks>
 ///     <para>
 ///         The hook procedure can be in the state of being called by another thread even after UnhookWindowsHookEx
 ///         returns. If the hook procedure is not being called concurrently, the hook procedure is removed immediately
 ///         before <see cref="UnhookWindowsHookEx" /> returns.
 ///     </para>
 ///     <para>
 ///         For an example, see
 ///         <see cref="!:https://msdn.microsoft.com/en-us/library/windows/desktop/ms644960%28v=vs.85%29.aspx#system_events">
 ///             Monitoring
 ///             System Events
 ///         </see>
 ///         .
 ///     </para>
 /// </remarks>
 [DllImport("user32.dll", SetLastError = true)]
 [return: MarshalAs(UnmanagedType.Bool)]
 static extern bool UnhookWindowsHookEx(IntPtr hhk);

!!!!VB.NET Signature:
 <DllImport("user32.dll", SetLastError := True)> _
 Public Shared Function UnhookWindowsHookEx(ByVal hhk As IntPtr) As <MarshalAs(UnmanagedType.Bool)> Boolean
 End Function
!!!!VB Signature:
 Public Declare Function UnhookWindowsHookEx Lib "user32" _
                  (ByVal hHook As Long) As Long
!!!!User-Defined Types:
None.

!!!!Notes:
None.

!!!!Tips & Tricks:	
Please add some!

!!!!Sample Code:
Please add some!

!!!!Alternative Managed API:
The ManagedWindowsApi project (http://mwinapi.sourceforge.net) provides a Hook class and subclasses for Journal hooks, Message hooks and Low-Level hooks.

Documentation: UnhookWindowsHookEx@msdn on MSDN