C#与C++类型对应关系总结
另:
在进行string转换时,需要加入前缀 [MarshalAs(UnmanagedType.LPStr)]lpdword
对应于 ref int
C#调用DLL文件时参数对应表
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)] 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)] 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); 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 c++: typedef void (*CALLBACKFUN1W)(wchar_t*, void* pArg); typedef void (*CALLBACKFUN1A)(char*, void* pArg); bool BIOPRINT_SENSOR_API dllFun1(CALLBACKFUN1 pCallbackFun1, void* pArg); c#: [UnmanagedFunctionPointer(CallingConvention.Cdecl)] public delegate void CallbackFunc1([MarshalAs(UnmanagedType.LPWStr)] StringBuilder strName, IntPtr pArg);
以上仅供参考,原文链接:https://blog.csdn.net/Yoker3012/article/details/84027476
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