C#调用C++的DLL搜集整理的所有数据类型转换方式 _.NET_编程开发_程序员俱乐部

本以为这篇搜集整理的代码会是很不错的文章,花了一天时间,搜索到最后居然出来一篇叫做"C# 与 C++ 数据类型对照表"的文章.几乎囊括掉和大部分的数据了,太打击我了. 本文中有部分的数据没有测试.也有一些不错的是看了上百篇网文对比整理得来的.希望有帮助.

??????? //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);
???????? *
???????? *
???????? */

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