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UnmanagedFunctionPointerAttribute Class

Controls the marshaling behavior of a delegate signature passed as an unmanaged function pointer to or from unmanaged code. This class cannot be inherited.

System.Object
  System.Attribute
    System.Runtime.InteropServices.UnmanagedFunctionPointerAttribute

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

[AttributeUsageAttribute(AttributeTargets.Delegate, AllowMultiple = false, 
	Inherited = false)]
[ComVisibleAttribute(true)]
public sealed class UnmanagedFunctionPointerAttribute : Attribute

The UnmanagedFunctionPointerAttribute type exposes the following members.

  NameDescription
Public methodUnmanagedFunctionPointerAttributeInitializes a new instance of the UnmanagedFunctionPointerAttribute class with the specified calling convention.
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  NameDescription
Public propertyCallingConventionGets the value of the calling convention.
Public propertyTypeIdWhen implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)
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  NameDescription
Public methodEqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodIsDefaultAttributeWhen overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
Public methodMatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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  NameDescription
Public fieldBestFitMappingEnables or disables best-fit mapping behavior when converting Unicode characters to ANSI characters.
Public fieldCharSetIndicates how to marshal string parameters to the method, and controls name mangling.
Public fieldSetLastErrorIndicates whether the callee calls the SetLastError Win32 API function before returning from the attributed method.
Public fieldThrowOnUnmappableCharEnables or disables the throwing of an exception on an unmappable Unicode character that is converted to an ANSI "?" character.
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  NameDescription
Explicit interface implemetationPrivate method_Attribute.GetIDsOfNamesMaps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoRetrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoCountRetrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.InvokeProvides access to properties and methods exposed by an object. (Inherited from Attribute.)
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The fields of the UnmanagedFunctionPointerAttribute attribute control various aspects of the transition of a delegate to an unmanaged function pointer, and are the same as the fields with identical names in the DllImportAttribute attribute. These fields are optional, but if you do not specify a field name, UnmanagedFunctionPointerAttribute is ignored.

For more information about using attributes, see Extending Metadata Using Attributes.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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

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