This documentation is archived and is not being maintained.

Marshal.GetManagedThunkForUnmanagedMethodPtr Method

NOTE: This API is now obsolete.

Gets a pointer to a thunk that marshals a call from managed to unmanaged code.

Namespace:  System.Runtime.InteropServices
Assembly:  mscorlib (in mscorlib.dll)

[ObsoleteAttribute("The GetManagedThunkForUnmanagedMethodPtr method has been deprecated and will be removed in a future release.", 
[SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.UnmanagedCode)]
public static IntPtr GetManagedThunkForUnmanagedMethodPtr(
	IntPtr pfnMethodToWrap,
	IntPtr pbSignature,
	int cbSignature


Type: System.IntPtr

A pointer to the method to marshal.

Type: System.IntPtr

A pointer to the method signature.

Type: System.Int32

The number of bytes in pbSignature.

Return Value

Type: System.IntPtr
A pointer to the thunk that will marshal a call from the pfnMethodToWrap parameter.

GetManagedThunkForUnmanagedMethodPtr is exposed for compiler support only.


This method uses SecurityAction.LinkDemand to prevent it from being called from untrusted code; only the immediate caller is required to have SecurityPermissionAttribute.UnmanagedCode permission. If your code can be called from partially trusted code, do not pass user input to Marshal class methods without validation. For important limitations on using the LinkDemand member, see Demand vs. LinkDemand.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 1.1, 1.0
Obsolete (compiler warning) in 3.5
Obsolete (compiler warning) in 3.5 SP1
Obsolete (compiler warning) in 3.0
Obsolete (compiler warning) in 3.0 SP1
Obsolete (compiler warning) in 3.0 SP2
Obsolete (compiler warning) in 2.0
Obsolete (compiler warning) in 2.0 SP1
Obsolete (compiler warning) in 2.0 SP2