C# Signature:

[DllImport("kernel32.dll", SetLastError=true)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool CloseHandle(IntPtr hObject);

VB .NET Signature:

Declare Auto Function CloseHandle Lib "kernel32.dll" (ByVal hObject As IntPtr) As Boolean
Declare Function CloseHandle Lib "kernel32" Alias "CloseHandle" (ByVal hObject As Integer) As Integer

User-Defined Types:

None.

Notes:

For .NET 2.0, consider using Microsoft.Win32.SafeHandles.SafeFileHandle instead. It can be used where IntPtr is used.

Can someone explain why "[return: MarshalAs(UnmanagedType.Bool)]" is part of the signature?

Tips & Tricks:

Please add some!

Sample Code:

hMapFile = CreateFileMapping(INVALID_HANDLE_VALUE, 0, PAGE_READWRITE, 0, 4096, "mIRC")
CloseHandle(hMapFile)

Alternative Managed API:

Do you know one? Please contribute it!

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• helpful tips or sample code to share for using this API in managed code?
• corrections to the existing content?
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