P/Invoke 声明似乎不正确

发布于 2024-09-26 12:30:58 字数 972 浏览 4 评论 0原文

我得到了一个内部开发的库,作为 BITS 的包装。有人告诉我,如果您想在 64 位和 32 位版本之间进行更改,则需要交换这两行注释。

[StructLayout(LayoutKind.Explicit, Size = 8, Pack = 4)]  //32 bit address
internal struct BG_BASIC_CREDENTIALS
{
    [FieldOffset(0)]
    [MarshalAs(UnmanagedType.LPWStr)]
    public string UserName;

    [FieldOffset(4)]
    [MarshalAs(UnmanagedType.LPWStr)]
    public string Password;
}


//[StructLayout(LayoutKind.Explicit, Size = 16, Pack = 8)]  //64 bit address
//internal struct BG_BASIC_CREDENTIALS
//{
//    [FieldOffset(0)]
//    [MarshalAs(UnmanagedType.LPWStr)]
//    public string UserName;

//    [FieldOffset(8)]
//    [MarshalAs(UnmanagedType.LPWStr)]
//    public string Password;
//}

这对我来说是不合适的,是我通过做正确的事情得到这个的人(此代码使用交换注释技巧部署在 32 和 64 机器上,所以我知道它是有效的)。如果这是需要做的,有什么方法可以做到这一点,这样注释就不需要在每次 32 或 64 位构建完成时手动调整? (或者使该dll目标CPU全部兼容的方法)

链接到该数据类型的 MSDN

I was handed down a library that was developed in house as a wrapper for BITS. I was told that if you wanted to change between the 64bit and 32bit build you would need to swap out these two commented lines.

[StructLayout(LayoutKind.Explicit, Size = 8, Pack = 4)]  //32 bit address
internal struct BG_BASIC_CREDENTIALS
{
    [FieldOffset(0)]
    [MarshalAs(UnmanagedType.LPWStr)]
    public string UserName;

    [FieldOffset(4)]
    [MarshalAs(UnmanagedType.LPWStr)]
    public string Password;
}


//[StructLayout(LayoutKind.Explicit, Size = 16, Pack = 8)]  //64 bit address
//internal struct BG_BASIC_CREDENTIALS
//{
//    [FieldOffset(0)]
//    [MarshalAs(UnmanagedType.LPWStr)]
//    public string UserName;

//    [FieldOffset(8)]
//    [MarshalAs(UnmanagedType.LPWStr)]
//    public string Password;
//}

This just does not sit right with me, was the person who I got this from doing the right thing (this code is deployed on both 32 and 64 machines using the swapped comment trick so I know it works). If this is what needs to be done is there any way to make it so the comment does not need to be manually adjusted every time a 32 or 64 bit build is done? (or a way to make this dll target cpu all compatible)

Link to the MSDN of the datatype

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氛圍 2024-10-03 12:30:58

你不需要做任何 x64/x86 技巧,这是结构体的 pinvoke

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)]
struct BG_BASIC_CREDENTIALS
{
  public string UserName;
  public string Pssword;
}

You don't need todo any x64/x86 tricks, here is the pinvoke of the struct

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)]
struct BG_BASIC_CREDENTIALS
{
  public string UserName;
  public string Pssword;
}
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