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CriticalHandleZeroOrMinusOneIsInvalid Class

Provides a base class for Win32 critical handle implementations in which the value of either 0 or -1 indicates an invalid handle.

Namespace: Microsoft.Win32.SafeHandles
Assembly: mscorlib (in mscorlib.dll)

public abstract class CriticalHandleZeroOrMinusOneIsInvalid : CriticalHandle
public abstract class CriticalHandleZeroOrMinusOneIsInvalid extends CriticalHandle
public abstract class CriticalHandleZeroOrMinusOneIsInvalid extends CriticalHandle
Not applicable.

This class derives from the System.Runtime.InteropServices.CriticalHandle class. It describes the format of an invalid handle. For example, some handles use -1 as an invalid handle value, while others use 0. Further derivations of this class (for example, file or registry handles) can specialize this further.

Use the CriticalHandleZeroOrMinusOneIsInvalid class when you need to wrap an unmanaged resource that does not have an existing managed wrapper.

NoteNote:

See the CriticalHandle class for important information on critical handle security and thread safety.

System.Object
   System.Runtime.ConstrainedExecution.CriticalFinalizerObject
     System.Runtime.InteropServices.CriticalHandle
      Microsoft.Win32.SafeHandles.CriticalHandleZeroOrMinusOneIsInvalid

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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