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UnmanagedFunctionPointerAttribute Class

.NET Framework (current version)
 

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

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

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

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

NameDescription
System_CAPS_pubmethodUnmanagedFunctionPointerAttribute(CallingConvention)

Initializes a new instance of the UnmanagedFunctionPointerAttribute class with the specified calling convention.

NameDescription
System_CAPS_pubpropertyCallingConvention

Gets the value of the calling convention.

System_CAPS_pubpropertyTypeId

When implemented in a derived class, gets a unique identifier for this Attribute.(Inherited from Attribute.)

NameDescription
System_CAPS_pubmethodEquals(Object^)

This API supports the product infrastructure and is not intended to be used directly from your code. Returns a value that indicates whether this instance is equal to a specified object.(Inherited from Attribute.)

System_CAPS_pubmethodGetHashCode()

Returns the hash code for this instance.(Inherited from Attribute.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodIsDefaultAttribute()

When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.(Inherited from Attribute.)

System_CAPS_pubmethodMatch(Object^)

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

NameDescription
System_CAPS_pubfieldBestFitMapping

Enables or disables best-fit mapping behavior when converting Unicode characters to ANSI characters.

System_CAPS_pubfieldCharSet

Indicates how to marshal string parameters to the method, and controls name mangling.

System_CAPS_pubfieldSetLastError

Indicates whether the callee calls the SetLastError Win32 API function before returning from the attributed method.

System_CAPS_pubfieldThrowOnUnmappableChar

Enables or disables the throwing of an exception on an unmappable Unicode character that is converted to an ANSI "?" character.

NameDescription
System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute::GetIDsOfNames(Guid%, IntPtr, UInt32, UInt32, IntPtr)

Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute::GetTypeInfo(UInt32, UInt32, IntPtr)

Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute::GetTypeInfoCount(UInt32%)

Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute::Invoke(UInt32, Guid%, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Provides access to properties and methods exposed by an object.(Inherited from Attribute.)

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.

Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1

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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