• C# 与 C++ 数据类型比较及结构体转换


    转发至http://www.blogjava.net/heting/archive/2010/03/20/315998.html

    C++            C#
    =====================================
    WORD            ushort
    DWORD            uint
    UCHAR            int/byte   大部分情况都可以使用int代替,而如果需要严格对齐的话则应该用bytebyte 
    UCHAR*            string/IntPtr
    unsigned char*         [MarshalAs(UnmanagedType.LPArray)]byte[]/?(Intptr)
    char*            string
    LPCTSTR            string
    LPTSTR            [MarshalAs(UnmanagedType.LPTStr)] string
    long            int
    ulong               uint
    Handle            IntPtr
    HWND            IntPtr
    void*            IntPtr
    int            int
    int*            ref int
    *int            IntPtr
    unsigned int        uint
    COLORREF                uint 

     

     

    API与C#的数据类型对应关系表 
    API数据类型 类型描述 C#类型 API数据类型 类型描述 C#类型 
    WORD 16位无符号整数 ushort CHAR 字符 char 
    LONG 32位无符号整数 int DWORDLONG 64位长整数 long 
    DWORD 32位无符号整数 uint HDC 设备描述表句柄 int 
    HANDLE 句柄,32位整数 int HGDIOBJ GDI对象句柄 int 
    UINT 32位无符号整数 uint HINSTANCE 实例句柄 int 
    BOOL 32位布尔型整数 bool HWM 窗口句柄 int 
    LPSTR 指向字符的32位指针 string HPARAM 32位消息参数 int 
    LPCSTR 指向常字符的32位指针 String LPARAM 32位消息参数 int 
    BYTE 字节 byte WPARAM 32位消息参数 int 


     

     

     

    BOOL=System.Int32
    BOOLEAN=System.Int32
    BYTE=System.UInt16
    CHAR=System.Int16
    COLORREF=System.UInt32
    DWORD=System.UInt32
    DWORD32=System.UInt32
    DWORD64=System.UInt64
    FLOAT=System.Float
    HACCEL=System.IntPtr
    HANDLE=System.IntPtr
    HBITMAP=System.IntPtr
    HBRUSH=System.IntPtr
    HCONV=System.IntPtr
    HCONVLIST=System.IntPtr
    HCURSOR=System.IntPtr
    HDC=System.IntPtr
    HDDEDATA=System.IntPtr
    HDESK=System.IntPtr
    HDROP=System.IntPtr
    HDWP=System.IntPtr
    HENHMETAFILE=System.IntPtr
    HFILE=System.IntPtr
    HFONT=System.IntPtr
    HGDIOBJ=System.IntPtr
    HGLOBAL=System.IntPtr
    HHOOK=System.IntPtr
    HICON=System.IntPtr
    HIMAGELIST=System.IntPtr
    HIMC=System.IntPtr
    HINSTANCE=System.IntPtr
    HKEY=System.IntPtr
    HLOCAL=System.IntPtr
    HMENU=System.IntPtr
    HMETAFILE=System.IntPtr
    HMODULE=System.IntPtr
    HMONITOR=System.IntPtr
    HPALETTE=System.IntPtr
    HPEN=System.IntPtr
    HRGN=System.IntPtr
    HRSRC=System.IntPtr
    HSZ=System.IntPtr
    HWINSTA=System.IntPtr
    HWND=System.IntPtr
    INT=System.Int32
    INT32=System.Int32
    INT64=System.Int64
    LONG=System.Int32
    LONG32=System.Int32
    LONG64=System.Int64
    LONGLONG=System.Int64
    LPARAM=System.IntPtr
    LPBOOL=System.Int16[]
    LPBYTE=System.UInt16[]
    LPCOLORREF=System.UInt32[]
    LPCSTR=System.String
    LPCTSTR=System.String
    LPCVOID=System.UInt32
    LPCWSTR=System.String
    LPDWORD=System.UInt32[]
    LPHANDLE=System.UInt32
    LPINT=System.Int32[]
    LPLONG=System.Int32[]
    LPSTR=System.String
    LPTSTR=System.String
    LPVOID=System.UInt32
    LPWORD=System.Int32[]
    LPWSTR=System.String
    LRESULT=System.IntPtr
    PBOOL=System.Int16[]
    PBOOLEAN=System.Int16[]
    PBYTE=System.UInt16[]
    PCHAR=System.Char[]
    PCSTR=System.String
    PCTSTR=System.String
    PCWCH=System.UInt32
    PCWSTR=System.UInt32
    PDWORD=System.Int32[]
    PFLOAT=System.Float[]
    PHANDLE=System.UInt32
    PHKEY=System.UInt32
    PINT=System.Int32[]
    PLCID=System.UInt32
    PLONG=System.Int32[]
    PLUID=System.UInt32
    PSHORT=System.Int16[]
    PSTR=System.String
    PTBYTE=System.Char[]
    PTCHAR=System.Char[]
    PTSTR=System.String
    PUCHAR=System.Char[]
    PUINT=System.UInt32[]
    PULONG=System.UInt32[]
    PUSHORT=System.UInt16[]
    PVOID=System.UInt32
    PWCHAR=System.Char[]
    PWORD=System.Int16[]
    PWSTR=System.String
    REGSAM=System.UInt32
    SC_HANDLE=System.IntPtr
    SC_LOCK=System.IntPtr
    SHORT=System.Int16
    SIZE_T=System.UInt32
    SSIZE_=System.UInt32
    TBYTE=System.Char
    TCHAR=System.Char
    UCHAR=System.Byte
    UINT=System.UInt32
    UINT32=System.UInt32
    UINT64=System.UInt64
    ULONG=System.UInt32
    ULONG32=System.UInt32
    ULONG64=System.UInt64
    ULONGLONG=System.UInt64
    USHORT=System.UInt16
    WORD=System.UInt16
    WPARAM=System.IntPtr

    <---------补充----------->

    Wtypes.h 中的非托管类型    非托管C 语言类型    托管类名       说明 
    HANDLE                        void*                   System.IntPtr  32 位 
    BYTE                            unsigned char       System.Byte    8 位 
    SHORT                         short                    System.Int16   16 位 
    WORD                          unsigned short      System.UInt16  16 位 
    INT                               int                       System.Int32   32 位 
    UINT                             unsigned int         System.UInt32  32 位 
    LONG                            long                    System.Int32   32 位 
    BOOL                            long                    System.Int32   32 位 
    DWORD                        unsigned long       System.UInt32  32 位 
    ULONG                          unsigned long      System.UInt32  32 位 
    CHAR                            char                    System.Char    用 ANSI 修饰。 
    LPSTR                           char*                  System.String 或 System.StringBuilder 用 ANSI 修饰。 
    LPCSTR                         Const char*         System.String 或 System.StringBuilder 用 ANSI 修饰。 
    LPWSTR                        wchar_t*             System.String 或 System.StringBuilder 用 Unicode 修饰。 
    LPCWSTR                      Const wchar_t*    System.String 或 System.StringBuilder 用 Unicode 修饰。 
    FLOAT                           Float                    System.Single 32 位 
    DOUBLE                        Double                 System.Double 64 位 

     

     

    C/C++中的结构类型数据在C#下的转换

     
    在做项目移植的时候,经常会碰到数据类型的转换,而我这一次碰到的是C/C++中的结构怎样转换到C#。折腾了一个晚上终于有一个完美的方案。
    例如我们在C/C++下的结构数据如下:
    typedef struct 
    {
        char sLibName[ 256 ];
        char sPathToLibrary[ 256 ];
        INT32        iEntries;
        INT32        iUsed;
        UINT16    iSort;
        UINT16    iVersion;
        BOOLEAN    fContainsSubDirectories;
        INT32        iReserved;
    } LIBHEADER;
    我们想把它转成C#下的结构类型如下:
        public struct LIBHEADER
        {
            public char[] sLibName;
            public char[] sPathToLibrary;
            public Int32 iEntries;
            public Int32 iUsed;
            public UInt16 iSort;
            public UInt16 iVersion;
            public Boolean fContainsSubDirectories;
            public Int32 iReserved;
        }
    看上去好像没问题了,呵呵呵,其实这样是不行的,我们得再给C#编译器一些信息,告诉它一些字符数组的大小。然后它们在C#下面长得样子就变成这样:
        [StructLayout(LayoutKind.Sequential)]
        public struct LIBHEADER
        {
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 256)]
            public char[] sLibName;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 256)]
            public char[] sPathToLibrary;
            public Int32 iEntries;
            public Int32 iUsed;
            public UInt16 iSort;
            public UInt16 iVersion;
            public Boolean fContainsSubDirectories;
            public Int32 iReserved;
        }
    然后写一个函数负责转换。
    public StructType ConverBytesToStructure<StructType>(byte[] bytesBuffer)
            {
                // 检查长度。
                if (bytesBuffer.Length != Marshal.SizeOf(typeof(StructType)))
                {
                    throw new ArgumentException("bytesBuffer参数和structObject参数字节长度不一致。");
                }

                IntPtr bufferHandler = Marshal.AllocHGlobal(bytesBuffer.Length);
                for (int index = 0; index < bytesBuffer.Length; index++)
                {
                    Marshal.WriteByte(bufferHandler, index, bytesBuffer[index]);
                }
                StructType structObject = (StructType)Marshal.PtrToStructure(bufferHandler, typeof(StructType));
                Marshal.FreeHGlobal(bufferHandler);
                return structObject;
            }
    然后我们的函数用例是这样:
        FileStream file = File.OpenRead(@"D:Jagged Alliance 2 GoldINSTALL.LOG");
        byte[] buffer = new byte[Marshal.SizeOf(typeof(LIBHEADER))];
        file.Read(buffer, 0, buffer.Length);
        LIBHEADER testValue = CommonTools.ConverBytesToStructure<LIBHEADER>(buffer);
    string libName = new string(testValue.sLibName);
    string pathToLibrary= new string(testValue.sPathToLibrary);
    OK,搞定。
    如果想去掉后面两句的char数组的转换哪代码如下
    C#中的结构代码
        [StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi)]
        public struct LIBHEADER
        {
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)]
            public string sLibName;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)]
            public string sPathToLibrary;
            public Int32 iEntries;
            public Int32 iUsed;
            public UInt16 iSort;
            public UInt16 iVersion;
            public Boolean fContainsSubDirectories;
            public Int32 iReserved;
        }
    其它代码不用作修改便可使用。

  • 相关阅读:
    vue 解决 打包完iE下空白
    多层josn数据 修改
    vue 初始化data中的数据
    图片查看器(缩放 拖动)
    js 懒加载
    css flex 兼容ios android--商品展示 添加购物车
    领域驱动架构(DDD)建模
    知乎复制文本
    Nlog配置文件
    未能加载文件或程序集“xxx”或它的某一个依赖项。生成此程序集的运行时比当前加载的运行时新,无法加载此程序集
  • 原文地址:https://www.cnblogs.com/Iyce/p/4745863.html
Copyright © 2020-2023  润新知