VariantWrapper(Object) 构造函数

定义

命名空间:

System.Runtime.InteropServices

程序集:

System.Runtime.InteropServices.dll

Source:

VariantWrapper.cs

使用指定的 Object 参数初始化 VariantWrapper 类的新实例。

public:
 VariantWrapper(System::Object ^ obj);

public VariantWrapper (object? obj);

new System.Runtime.InteropServices.VariantWrapper : obj -> System.Runtime.InteropServices.VariantWrapper

Public Sub New (obj As Object)

参数

obj

Object

要封送的对象。

示例

下面的代码示例演示如何使用 VariantWrapper 类包装 Object 互操作封送处理器作为 传递 VT_VARIANT | VT_BYREF的 。

// Create an instance of an unmanged COM object.
UnmanagedComClass UnmanagedComClassInstance = new UnmanagedComClass();

// Create a string to pass to the COM object.
string helloString = "Hello World!";

// Wrap the string with the VariantWrapper class.
object var = new System.Runtime.InteropServices.VariantWrapper(helloString);

// Pass the wrapped object.
UnmanagedComClassInstance.MethodWithStringRefParam(ref var);

' Create an instance of an unmanged COM object.
Dim UnmanagedComClassInstance As New UnmanagedComClass()

' Create a string to pass to the COM object.
Dim helloString As String = "Hello World!"

' Wrap the string with the VariantWrapper class.
Dim var As Object = New System.Runtime.InteropServices.VariantWrapper(helloString)

' Pass the wrapped object.
UnmanagedComClassInstance.MethodWithStringRefParam(var)