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OpCodes.Ldvirtftn Field

Pushes an unmanaged pointer (type natural int) to the native code implementing a particular virtual method associated with a specified object onto the evaluation stack.

[Visual Basic]
Public Shared ReadOnly Ldvirtftn As OpCode
[C#]
public static readonly OpCode Ldvirtftn;
[C++]
public: static OpCode Ldvirtftn;
[JScript]
public static var Ldvirtftn : OpCode;

Remarks

The following table lists the instruction's hexadecimal and Microsoft Intermediate Language (MSIL) assembly format, along with a brief reference summary:

Format Assembly Format Description
FE 07 < T > ldvirtftn method Pushes the pointer to an object's virtual method method on the stack.

The stack transitional behavior, in sequential order, is:

  1. An object reference is pushed onto the stack.
  2. The object reference is popped from the stack and the address of the entry point to the method (as specified by the metadata token method) is looked up.
  3. The pointer to method is pushed onto the stack.

The resulting unmanaged pointer pushed onto the stack by the ldvirtftn instruction can be called using the Calli instruction if it references a managed method (or a stub that transitions from managed to unmanaged code).

The unmanaged pointer points to native code using the calling convention specified by in the metadata token method. As a result, the method pointer can be passed to unmanaged native code (for example, as a callback routine) if that routine expects the corresponding calling convention.

The following Emit constructor overload can use the ldvirtftn opcode:

  • ILGenerator.Emit(OpCode, MethodInfo)

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also

OpCodes Class | OpCodes Members | System.Reflection.Emit Namespace

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