C#与C++数据类型对应总结
C#与C++数据类型对应总结
Windows Data Type |
.NET Data Type |
BOOL, BOOLEAN |
Boolean or Int32 |
BSTR |
String |
BYTE |
Byte |
CHAR |
Char |
DOUBLE |
Double |
DWORD |
Int32 or UInt32 |
FLOAT |
Single |
HANDLE (and all other handle types, such as HFONT and HMENU) |
IntPtr, UintPtr or HandleRef |
HRESULT |
Int32 or UInt32 |
INT |
Int32 |
LANGID |
Int16 or UInt16 |
LCID |
Int32 or UInt32 |
LONG |
Int32 |
LPARAM |
IntPtr, UintPtr or Object |
LPCSTR |
String |
LPCTSTR |
String |
LPCWSTR |
String |
LPSTR |
String or StringBuilder* |
LPTSTR |
String or StringBuilder |
LPWSTR |
String or StringBuilder |
LPVOID |
IntPtr, UintPtr or Object |
LRESULT |
IntPtr |
SAFEARRAY |
.NET array type |
SHORT |
Int16 |
TCHAR |
Char |
UCHAR |
SByte |
UINT |
Int32 or UInt32 |
ULONG |
Int32 or UInt32 |
VARIANT |
Object |
VARIANT_BOOL |
Boolean |
WCHAR |
Char |
WORD |
Int16 or UInt16 |
WPARAM |
IntPtr, UintPtr or Object |
另: 在进行string转换时,需要加入前缀[MarshalAs(UnmanagedType.LPStr)]lpdword 对应于 ref int
C/C++ |
C# |
HANDLE, LPDWORD, LPVOID, void* |
IntPtr |
LPCTSTR, LPCTSTR, LPSTR, char*, const char*, Wchar_t*, LPWSTR |
String [in], StringBuilder [in, out] |
DWORD, unsigned long, Ulong |
UInt32, [MarshalAs(UnmanagedType.U4)] |
bool |
bool |
LP |
[In] ref |
SIZE_T |
uint |
LPDWORD |
out uint |
LPTSTR |
[Out] StringBuilder |
PULARGE_INTEGER |
out ulong |
WORD |
uInt16 |
Byte, unsigned char |
byte |
Short |
Int16 |
Long, int |
Int32 |
float |
single |
double |
double |
NULL pointer |
IntPtr.Zero |
Uint |
Uint32 |
C#调用DLL文件时参数对应表
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 |
在 32 位 Windows 操作系统上为 32 位,在 64 位 Windows 操作系统上为 64 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.Text.StringBuilder |
用 ANSI 修饰。 |
LPCSTR |
Const char* |
System.String 或 System.Text.StringBuilder |
用 ANSI 修饰。 |
LPWSTR |
wchar_t* |
System.String 或 System.Text.StringBuilder |
用 Unicode 修饰。 |
LPCWSTR |
Const wchar_t* |
System.String 或 System.Text.StringBuilder |
用 Unicode 修饰。 |
FLOAT |
Float |
System.Single |
32 位 |
DOUBLE |
Double |
System.Double |
64 位 |
//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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