从void（WI​​NAPI *）（...）强制转换为LPVOID无效

Question

i'm trying to use this code [RasDialAsync.c] ( https://github.com/pauldotknopf/WindowsSDK7-Samples/blob/master/netds/ras/rasdialasync/RasDialAsync.c ) inside QT , i have only one error that i can't figure it out . what is this ? how can i fix this ? here is the function header :
My RasDialFunc function :

void WINAPI RasDialFunc(UINT unMsg,
                    RASCONNSTATE rasconnstate,
                    DWORD dwError )

and here is part of my codes :

LPRASDIALPARAMS lpRasDialParams = NULL;   // Structure to store the RasDial parameters
HRASCONN        hRasConn = NULL;          // Handle to RAS connection
DWORD           nRet = 0;                 // Return value from a function
lpRasDialParams = (LPRASDIALPARAMS) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(RASDIALPARAMS));
if (NULL == lpRasDialParams)
{
    qDebug() << "HeapAlloc failed\n";
}
lpRasDialParams->dwSize =sizeof(RASDIALPARAMS);
StringCchCopy(lpRasDialParams->szEntryName, CELEMS(lpRasDialParams->szEntryName), rasConn);
StringCchCopy(lpRasDialParams->szUserName, CELEMS(lpRasDialParams->szUserName), username);
StringCchCopy(lpRasDialParams->szPassword, CELEMS(lpRasDialParams->szPassword), password);

hRasConn = NULL;
nRet = RasDial(NULL, NULL, lpRasDialParams, 0,&RasDialFunc, &hRasConn);
if (nRet != 0)

and here is the error

main.cpp:202: error: invalid conversion from 'void (__attribute__((__stdcall__)) *)(UINT, tagRASCONNSTATE, DWORD) {aka void (__attribute__((__stdcall__)) *)(unsigned int, tagRASCONNSTATE, long unsigned int)}' to 'LPVOID {aka void*}' [-fpermissive]
     nRet = RasDial(NULL, NULL, lpRasDialParams, 0,&RasDialFunc, &hRasConn);
                                                                          ^

Answer 1

These Following Comments are my answer :

It is, technically, illegal to cast between a function pointer and an object pointer. The standard allows them to have different sizes. For better or worse, WinAPI requires such a cast in a number of places (and I seem to recall there are some POSIX functions that do, too). MSVC compiler never complained about such a cast, but you are using GCC, which seems to want to be pedantic about it. I suspect there's might be some command line option that would make GCC accept it - look for that (I myself am not familiar with GCC). – Igor Tandetnik

reinterpret_cast - E4z9

And the final code is :

    nRet = RasDial(NULL, NULL, lpRasDialParams, 0,reinterpret_cast<void*>(&RasDialFunc) , &hRasConn);