AviFileOpen неработатет если распаложена в DLL, писал на С++ в Visual C++ Express. GetLastError возращает 0, сама функция возращает чегото неясное (в MSDN такого кода ошибки нет)
| Код |
void ErrorExit(LPTSTR lpszFunction)
{
// Retrieve the system error message for the last-error code
LPVOID lpMsgBuf;
LPVOID lpDisplayBuf;
DWORD dw = GetLastError();
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
dw,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) &lpMsgBuf,
0, NULL );
// Display the error message and exit the process
lpDisplayBuf = (LPVOID)LocalAlloc(LMEM_ZEROINIT,
(lstrlen((LPCTSTR)lpMsgBuf)+lstrlen((LPCTSTR)lpszFunction)+40)*sizeof(TCHAR));
StringCchPrintf((LPTSTR)lpDisplayBuf,
LocalSize(lpDisplayBuf),
TEXT("%s failed with error %d: %s"),
lpszFunction, dw, lpMsgBuf);
MessageBox(NULL, (LPCTSTR)lpDisplayBuf, TEXT("Error"), MB_OK);
LocalFree(lpMsgBuf);
LocalFree(lpDisplayBuf);
ExitProcess(dw);
}
unsigned int FormatAviMessage(HRESULT code, char *buf,unsigned int len)
{ const char *msg="unknown avi result code";
switch (code)
{ case S_OK: msg="Success"; break;
case AVIERR_BADFORMAT: msg="AVIERR_BADFORMAT: corrupt file or unrecognized format"; break;
case AVIERR_MEMORY: msg="AVIERR_MEMORY: insufficient memory"; break;
case AVIERR_FILEREAD: msg="AVIERR_FILEREAD: disk error while reading file"; break;
case AVIERR_FILEOPEN: msg="AVIERR_FILEOPEN: disk error while opening file"; break;
case REGDB_E_CLASSNOTREG: msg="REGDB_E_CLASSNOTREG: file type not recognised"; break;
case AVIERR_READONLY: msg="AVIERR_READONLY: file is read-only"; break;
case AVIERR_NOCOMPRESSOR: msg="AVIERR_NOCOMPRESSOR: a suitable compressor could not be found"; break;
case AVIERR_UNSUPPORTED: msg="AVIERR_UNSUPPORTED: compression is not supported for this type of data"; break;
case AVIERR_INTERNAL: msg="AVIERR_INTERNAL: internal error"; break;
case AVIERR_BADFLAGS: msg="AVIERR_BADFLAGS"; break;
case AVIERR_BADPARAM: msg="AVIERR_BADPARAM"; break;
case AVIERR_BADSIZE: msg="AVIERR_BADSIZE"; break;
case AVIERR_BADHANDLE: msg="AVIERR_BADHANDLE"; break;
case AVIERR_FILEWRITE: msg="AVIERR_FILEWRITE: disk error while writing file"; break;
case AVIERR_COMPRESSOR: msg="AVIERR_COMPRESSOR"; break;
case AVIERR_NODATA: msg="AVIERR_READONLY"; break;
case AVIERR_BUFFERTOOSMALL: msg="AVIERR_BUFFERTOOSMALL"; break;
case AVIERR_CANTCOMPRESS: msg="AVIERR_CANTCOMPRESS"; break;
case AVIERR_USERABORT: msg="AVIERR_USERABORT"; break;
case AVIERR_ERROR: msg="AVIERR_ERROR"; break;
}
unsigned int mlen=(unsigned int)strlen(msg);
if (buf==0 || len==0) return mlen;
unsigned int n=mlen; if (n+1>len) n=len-1;
strncpy(buf,msg,n); buf[n]=0;
return mlen;
}
....
if((hRes = AVIFileOpen(&m_pFile, _TEXT("C:\\video.avi"), OF_WRITE | OF_CREATE, NULL)) == AVIERR_OK)
{
....
}
else{
TCHAR BUF[512];
FormatAviMessage(hRes, BUF, 512);
MessageBox(GetForegroundWindow(), BUF, 0, 0);
ErrorExit("AviFileOpen");
}
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