Ali P7 mobile Internet architect, Advanced Video (Daily update) for free learning, please click: https://space.bilibili.com/474380680
C ++ and C # data types summary
C ++ C # to call the DLL has collected all the data type conversions way, there may be a repeat or a variety of programs.
Win32 Types —- CLR Type
Struct need to be defined in C # in a Struct
the CallBack callback function needs to be encapsulated in a delegate Lane, delegate static extern int FunCallBack (string str);
alternatively unsigned char ppImage ** to IntPtr ppImage
int & nWidth replaced REF int nWidth
int , int &, then available ref int the corresponding
needle refers to the type parameter can ref IntPtr
function pointers using C ++: typedef Double ( fun_type1) (Double); corresponding to c #: public the delegate Double fun_type1 (Double);
char * operating c ++: char * corresponding to c # : the StringBuilder
c # pointers in use: add in place need to use unsafe pointers
corresponding to public byte unsigned char
typedef void (*CALLBACKFUN1W)(wchar_t*, void* pArg);
typedef void (*CALLBACKFUN1A)(char*, void* pArg);
bool BIOPRINT_SENSOR_API dllFun1(CALLBACKFUN1 pCallbackFun1, void* pArg);
Called to
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate void CallbackFunc1([MarshalAs(UnmanagedType.LPWStr)] StringBuilder strName, IntPtr pArg);
Original link: https://blog.csdn.net/humanking7/article/details/50981922
Ali P7 mobile Internet architect, Advanced Video (Daily update) for free learning, please click: https://space.bilibili.com/ 474 380 680