如何在 C# 中定义 TBBUTTON 结构?

本文介绍了如何在 C# 中定义 TBBUTTON 结构?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

大家好，

TBBUTTON 结构体在 MSDN 上定义如下:

The TBBUTTON struct is defined on MSDN as follows:

typedef struct { int iBitmap; int idCommand; BYTE fsState; BYTE fsStyle; #ifdef _WIN64 BYTE bReserved[6]; #else #if defined(_WIN32) BYTE bReserved[2]; #endif #endif DWORD_PTR dwData; INT_PTR iString; } TBBUTTON, *PTBBUTTON, *LPTBBUTTON;

我需要使用这个结构在 C# 中做一些互操作.我如何复制这个怪物，以便在为 AnyCPU 编译时正确定义它?谷歌显然充满了危险的错误信息！

I need to do some interop in C# using this struct. How do I replicate this monster so that it's defined correctly when compiled for AnyCPU? Google is apparently full of dangerous misinformation!

推荐答案

啊，我知道必须有办法.这是:

Ahah, I knew there had to be a way. And here it is:

[StructLayout(LayoutKind.Sequential)] public struct TBBUTTON { public int iBitmap; public int idCommand; [StructLayout(LayoutKind.Explicit)] private struct TBBUTTON_U { [FieldOffset(0)] public byte fsState; [FieldOffset(1)] public byte fsStyle; [FieldOffset(0)] private IntPtr bReserved; } private TBBUTTON_U union; public byte fsState { get { return union.fsState; } set { union.fsState = value; } } public byte fsStyle { get { return union.fsStyle; } set { union.fsStyle = value; } } public UIntPtr dwData; public IntPtr iString; }

Marshal.SizeOf 在 x64 进程上返回 32，在 x86 进程上返回 20，当我将它传递给 SendMessage 时，一切都会结束.我知道你可以做到，C#！

Marshal.SizeOf returns 32 on x64 processes and 20 on x86 processes, and everything ends up where it should when I pass this to SendMessage. I knew you could do it, C#!