C# 与 C++ 数据类型对照表

/C++中的DLL函数原型为
        //extern "C" __declspec(dllexport) bool 方法名一(const char* 变量名1, unsigned char* 变量名2)
        //extern "C" __declspec(dllexport) bool 方法名二(const unsigned char* 变量名1, char* 变量名2)


        //C#调用C++的DLL搜集整理的所有数据类型转换方式,可能会有重复或者多种方案,自己多测试
        //c++:HANDLE(void   *)          ----    c#:System.IntPtr
        //c++:Byte(unsigned   char)     ----    c#:System.Byte
        //c++:SHORT(short)              ----    c#:System.Int16
        //c++:WORD(unsigned   short)    ----    c#:System.UInt16
        //c++:INT(int)                  ----    c#:System.Int16
        //c++:INT(int)                  ----    c#:System.Int32
        //c++:UINT(unsigned   int)      ----    c#:System.UInt16
        //c++:UINT(unsigned   int)      ----    c#:System.UInt32
        //c++:LONG(long)                ----    c#:System.Int32
        //c++:ULONG(unsigned   long)    ----    c#:System.UInt32
        //c++:DWORD(unsigned   long)    ----    c#:System.UInt32
        //c++:DECIMAL                   ----    c#:System.Decimal
        //c++:BOOL(long)                ----    c#:System.Boolean
        //c++:CHAR(char)                ----    c#:System.Char
        //c++:LPSTR(char   *)           ----    c#:System.String
        //c++:LPWSTR(wchar_t   *)       ----    c#:System.String
        //c++:LPCSTR(const   char   *)  ----    c#:System.String
        //c++:LPCWSTR(const   wchar_t   *)      ----    c#:System.String
        //c++:PCAHR(char   *)   ----    c#:System.String
        //c++:BSTR              ----    c#:System.String
        //c++:FLOAT(float)      ----    c#:System.Single
        //c++:DOUBLE(double)    ----    c#:System.Double
        //c++:VARIANT           ----    c#:System.Object
        //c++:PBYTE(byte   *)   ----    c#:System.Byte[]


        //c++:BSTR      ----    c#:StringBuilder
        //c++:LPCTSTR   ----    c#:StringBuilder
        //c++:LPCTSTR   ----    c#:string
        //c++:LPTSTR    ----    c#:[MarshalAs(UnmanagedType.LPTStr)] string
        //c++:LPTSTR 输出变量名    ----    c#:StringBuilder 输出变量名
        //c++:LPCWSTR   ----    c#:IntPtr
        //c++:BOOL      ----    c#:bool  
        //c++:HMODULE   ----    c#:IntPtr   
        //c++:HINSTANCE ----    c#:IntPtr
        //c++:结构体    ----    c#:public struct 结构体{};
        //c++:结构体 **变量名   ----    c#:out 变量名   //C#中提前申明一个结构体实例化后的变量名
        //c++:结构体 &变量名    ----    c#:ref 结构体 变量名
        


        //c++:WORD      ----    c#:ushort
        //c++:DWORD     ----    c#:uint
        //c++:DWORD     ----    c#:int


        //c++:UCHAR     ----    c#:int
        //c++:UCHAR     ----    c#:byte
        //c++:UCHAR*    ----    c#:string
        //c++:UCHAR*    ----    c#:IntPtr


        //c++:GUID      ----    c#:Guid
        //c++:Handle    ----    c#:IntPtr
        //c++:HWND      ----    c#:IntPtr
        //c++:DWORD     ----    c#:int
        //c++:COLORREF  ----    c#:uint




        //c++:unsigned char     ----    c#:byte
        //c++:unsigned char *   ----    c#:ref byte
        //c++:unsigned char *   ----    c#:[MarshalAs(UnmanagedType.LPArray)] byte[]
        //c++:unsigned char *   ----    c#:[MarshalAs(UnmanagedType.LPArray)] Intptr


        //c++:unsigned char &   ----    c#:ref byte
        //c++:unsigned char 变量名      ----    c#:byte 变量名
        //c++:unsigned short 变量名     ----    c#:ushort 变量名
        //c++:unsigned int 变量名       ----    c#:uint 变量名
        //c++:unsigned long 变量名      ----    c#:ulong 变量名


        //c++:char 变量名       ----    c#:byte 变量名   //C++中一个字符用一个字节表示,C#中一个字符用两个字节表示
        //c++:char 数组名[数组大小]     ----    c#:MarshalAs(UnmanagedType.ByValTStr, SizeConst = 数组大小)]        public string 数组名; ushort


        //c++:char *            ----    c#:string       //传入参数
        //c++:char *            ----    c#:StringBuilder//传出参数
        //c++:char *变量名      ----    c#:ref string 变量名
        //c++:char *输入变量名  ----    c#:string 输入变量名
        //c++:char *输出变量名  ----    c#:[MarshalAs(UnmanagedType.LPStr)] StringBuilder 输出变量名


        //c++:char **           ----    c#:string
        //c++:char **变量名     ----    c#:ref string 变量名
        //c++:const char *      ----    c#:string
        //c++:char[]            ----    c#:string
        //c++:char 变量名[数组大小]     ----    c#:[MarshalAs(UnmanagedType.ByValTStr,SizeConst=数组大小)] public string 变量名;


        //c++:struct 结构体名 *变量名   ----    c#:ref 结构体名 变量名
        //c++:委托 变量名   ----    c#:委托 变量名


        //c++:int       ----    c#:int
        //c++:int       ----    c#:ref int
        //c++:int &     ----    c#:ref int
        //c++:int *     ----    c#:ref int      //C#中调用前需定义int 变量名 = 0;


        //c++:*int      ----    c#:IntPtr
        //c++:int32 PIPTR *     ----    c#:int32[]
        //c++:float PIPTR *     ----    c#:float[]
       


        //c++:double** 数组名          ----    c#:ref double 数组名
        //c++:double*[] 数组名          ----    c#:ref double 数组名
        //c++:long          ----    c#:int
        //c++:ulong         ----    c#:int
       
        //c++:UINT8 *       ----    c#:ref byte       //C#中调用前需定义byte 变量名 = new byte();       




        //c++:handle    ----    c#:IntPtr
        //c++:hwnd      ----    c#:IntPtr
       
       
        //c++:void *    ----    c#:IntPtr       
        //c++:void * user_obj_param    ----    c#:IntPtr user_obj_param
        //c++:void * 对象名称    ----    c#:([MarshalAs(UnmanagedType.AsAny)]Object 对象名称




       
        //c++:char, INT8, SBYTE, CHAR                               ----    c#:System.SByte 
        //c++:short, short int, INT16, SHORT                        ----    c#:System.Int16 
        //c++:int, long, long int, INT32, LONG32, BOOL , INT        ----    c#:System.Int32 
        //c++:__int64, INT64, LONGLONG                              ----    c#:System.Int64 
        //c++:unsigned char, UINT8, UCHAR , BYTE                    ----    c#:System.Byte 
        //c++:unsigned short, UINT16, USHORT, WORD, ATOM, WCHAR , __wchar_t             ----    c#:System.UInt16 
        //c++:unsigned, unsigned int, UINT32, ULONG32, DWORD32, ULONG, DWORD, UINT      ----    c#:System.UInt32 
        //c++:unsigned __int64, UINT64, DWORDLONG, ULONGLONG                            ----    c#:System.UInt64 
        //c++:float, FLOAT                                                              ----    c#:System.Single 
        //c++:double, long double, DOUBLE                                               ----    c#:System.Double 


        //Win32 Types        ----  CLR Type 
       


        //Struct需要在C#里重新定义一个Struct
        //CallBack回调函数需要封装在一个委托里，delegate static extern int FunCallBack(string str);


        //unsigned char** ppImage替换成IntPtr ppImage
        //int& nWidth替换成ref int nWidth
        //int*, int&, 则都可用 ref int 对应
        //双针指类型参数，可以用 ref IntPtr
        //函数指针使用c++: typedef double (*fun_type1)(double); 对应 c#:public delegate double  fun_type1(double);
        //char* 的操作c++: char*; 对应 c#:StringBuilder;
        //c#中使用指针:在需要使用指针的地方 加 unsafe




        //unsigned   char对应public   byte
        /*
         * typedef void (*CALLBACKFUN1W)(wchar_t*, void* pArg);
         * typedef void (*CALLBACKFUN1A)(char*, void* pArg);
         * bool BIOPRINT_SENSOR_API dllFun1(CALLBACKFUN1 pCallbackFun1, void* pArg);
         * 调用方式为
         * [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
         * public delegate void CallbackFunc1([MarshalAs(UnmanagedType.LPWStr)] StringBuilder strName, IntPtr pArg);
         *
         *
         */