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P/Invoke on 32bit and 64bit system
原标题:P/Invoke on 32 bit and 64 bit systems

让我们举一个例子:

BOOL MessageBeep(UINT uType); // from User32.dll

投入参数是UINT,以具体说明整形类型,即32比特和64比特分类,取决于我们称之为的Windows版本(或我错了?)。

如果我想从C#中获取P/Invoke信息,那么我就适用《驱逐宣言》:

[DllImport("User32.dll")]
static extern Boolean MessageBeep(UInt32 beepType);

该代码C#在Windows x64下的工作吗?

  • If yes, why is it OK to invoke the call a 32bit integer, while a 64bit integer is expected (assuming that I am correct on this)?
  • If no, how should the proper platform agnostic P/Invoke declaration look like in C#?
最佳回答

你是错误的。

但是,对于像<代码>HANDLE这样的与比照性不同的类型,请使用<代码>IntPtr。

如果你对一项P/Inoke声明有疑问,第一个检查地点是here

问题回答

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