VB.NET MarshalAsAttribute.SizeParamIndex字段代码示例

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本文整理汇总了VB.NET中System.Runtime.InteropServices.MarshalAsAttribute.SizeParamIndex字段的典型用法代码示例。如果您正苦于以下问题：VB.NET MarshalAsAttribute.SizeParamIndex字段的具体用法？VB.NET MarshalAsAttribute.SizeParamIndex怎么用？VB.NET MarshalAsAttribute.SizeParamIndex使用的例子？那么恭喜您, 这里精选的字段代码示例或许可以为您提供帮助。您也可以进一步了解该字段所在类System.Runtime.InteropServices.MarshalAsAttribute的用法示例。

在下文中一共展示了MarshalAsAttribute.SizeParamIndex字段的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的VB.NET代码示例。

示例1: SomeMethod

Option Strict Off

Imports System.Runtime.InteropServices
Imports SomeNamespace

Namespace SomeNamespace
    ' Force the layout of your fields to the C style struct layout.
    ' Without this, the .NET Framework will reorder your fields.
    
    <StructLayout(LayoutKind.Sequential)> _
    Structure Vertex
        Dim x As Decimal
        Dim y As Decimal
        Dim z As Decimal
    End Structure

    Class SomeClass
        ' Add [In] or [In, Out] attributes as approppriate.
        ' Marshal as a C style array of Vertex, where the second (SizeParamIndex is zero-based)
        '  parameter (size) contains the count of array elements.

        Declare Auto Sub SomeUnsafeMethod Lib "somelib.dll" ( _
                                      <MarshalAs(UnmanagedType.LPArray, SizeParamIndex:=1)> data() As Vertex, _
                                      size As Long ) 

        Public Sub SomeMethod()
            Dim verts(3) As Vertex
            SomeUnsafeMethod( verts, verts.Length )
        End Sub

    End Class

End Namespace

Module Test
    Sub Main
        Dim AClass As New SomeClass

        AClass.SomeMethod
        End Sub
End Module

开发者ID:VB.NET开发者，项目名称:System.Runtime.InteropServices，代码行数:41，代码来源:MarshalAsAttribute.SizeParamIndex

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