c#引用c++ dll类型转换

来源：互联网发布：白展堂知乎编辑：程序博客网时间：2024/05/06 12:29
原文链接：http://www.dotblogs.com.tw/merlin/archive/2012/07/17/73424.aspx
//C++中的DLL函數原型為
//extern “C” __declspec(dllexport) bool 方法名一(const char* 變量名1, unsigned char* 變量名2)
//extern “C” __declspec(dllexport) bool 方法名二(const unsigned char* 變量名1, char* 變量名2)
    //C#調用C++的DLL搜集整理的所有數據類型轉換方式,可能會有重復或者多種方案,自己多測試    //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 輸出變量名    ----    c#:StringBuilder 輸出變量名    //c++:LPCWSTR   ----    c#:IntPtr    //c++:BOOL      ----    c#:bool       //c++:HMODULE   ----    c#:IntPtr        //c++:HINSTANCE ----    c#:IntPtr     //c++:結構體    ----    c#:public struct 結構體{};     //c++:結構體 **變量名   ----    c#:out 變量名   //C#中提前申明一個結構體實例化後的變量名    //c++:結構體 &變量名    ----    c#:ref 結構體 變量名            //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 變量名      ----    c#:byte 變量名    //c++:unsigned short 變量名     ----    c#:ushort 變量名    //c++:unsigned int 變量名       ----    c#:uint 變量名    //c++:unsigned long 變量名      ----    c#:ulong 變量名    //c++:char 變量名       ----    c#:byte 變量名   //C++中一個字符用一個字節表示,C#中一個字符用兩個字節表示    //c++:char 數組名[數組大小]     ----    c#:MarshalAs(UnmanagedType.ByValTStr, SizeConst = 數組大小)]        public string 數組名; ushort    //c++:char *            ----    c#:string       //傳入參數    //c++:char *            ----    c#:StringBuilder//傳出參數    //c++:char *變量名      ----    c#:ref string 變量名    //c++:char *輸入變量名  ----    c#:string 輸入變量名    //c++:char *輸出變量名  ----    c#:[MarshalAs(UnmanagedType.LPStr)] StringBuilder 輸出變量名    //c++:char **           ----    c#:string    //c++:char **變量名     ----    c#:ref string 變量名    //c++:const char *      ----    c#:string    //c++:char[]            ----    c#:string    //c++:char 變量名[數組大小]     ----    c#:[MarshalAs(UnmanagedType.ByValTStr,SizeConst=數組大小)] public string 變量名;    //c++:struct 結構體名 *變量名   ----    c#:ref 結構體名 變量名    //c++:委托 變量名   ----    c#:委托 變量名    //c++:int       ----    c#:int    //c++:int       ----    c#:ref int    //c++:int &     ----    c#:ref int    //c++:int *     ----    c#:ref int      //C#中調用前需定義int 變量名 = 0;    //c++:*int      ----    c#:IntPtr    //c++:int32 PIPTR *     ----    c#:int32[]    //c++:float PIPTR *     ----    c#:float[]    //c++:double** 數組名          ----    c#:ref double 數組名    //c++:double*[] 數組名          ----    c#:ref double 數組名    //c++:long          ----    c#:int    //c++:ulong         ----    c#:int    //c++:UINT8 *       ----    c#:ref byte       //C#中調用前需定義byte 變量名 = 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 * 對象名稱    ----    c#:([MarshalAs(UnmanagedType.AsAny)]Object 對象名稱    //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#裏重新定義一個Struct    //CallBack回調函數需要封裝在一個委托裏，delegate static extern int FunCallBack(string str);    //unsigned char** ppImage替換成IntPtr ppImage    //int& nWidth替換成ref int nWidth    //int*, int&, 則都可用 ref int 對應    //雙針指類型參數，可以用 ref IntPtr    //函數指針使用c++: typedef double (*fun_type1)(double); 對應 c#:public delegate double  fun_type1(double);    //char* 的操作c++: char*; 對應 c#:StringBuilder;    //c#中使用指針:在需要使用指針的地方 加 unsafe    //unsigned   char對應public   byte    /*     * typedef void (*CALLBACKFUN1W)(wchar_t*, void* pArg);     * typedef void (*CALLBACKFUN1A)(char*, void* pArg);     * bool BIOPRINT_SENSOR_API dllFun1(CALLBACKFUN1 pCallbackFun1, void* pArg);     * 調用方式為     * [UnmanagedFunctionPointer(CallingConvention.Cdecl)]     * public delegate void CallbackFunc1([MarshalAs(UnmanagedType.LPWStr)] StringBuilder strName, IntPtr pArg);     *      * /
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