Question

c# 引用 c++ dll 参数 指针的指针 类型转换

#define FMTCVT_API extern "C" __declspec(dllimport)
FMTCVT_API HRESULT __stdcall FMTCVT_Create(void **handle);
FMTCVT_API HRESULT __stdcall FMTCVT_Initial(void *handle,char* szSourceName,char* szDecFileName);
FMTCVT_API HRESULT __stdcall FMTCVT_SetPara(void* handle,void* pDecFileInfo);
上面是几个函数 在c#中引用的时候 该怎么写呢?
[DllImport("xxx.dll")]
.........
下面的函数该怎么写?
所有的函数都返回int状态码.
所以应是int 而不是 void
FMTCVT_API HRESULT __stdcall FMCVT_SetSecretKey(void* handle,LONG lKeyType, char *pSecretKey, LONG lKeyLen); 这个又该怎么改啊

Answer 1

[DllImport("xxx.dll")]
public extern static void Create(out IntPtr handle );

[DllImport("xxx.dll")]
public extern static void Initial( IntPtr handle, string szSourceName, string szDecFileName);

[DllImport("xxx.dll")]
public extern static void SetPara( IntPtr handle, IntPtr pDecFileInfo);
-----------------------------------------

权当试试吧