BOOL MyFile::ReadAll( ByteBuffer& buffer )
{
DWORD dwFileSize = ::GetFileSize(m_handle, NULL);
if (0 == dwFileSize)
{
buffer.Free();
return TRUE;
}
buffer.Alloc(dwFileSize);
LPBYTE lpPos = (LPBYTE) buffer;
DWORD dwToRead = dwFileSize;
DWORD dwRead = 0;
while (::ReadFile(m_handle, lpPos, dwToRead, &dwRead, NULL) && dwRead > 0)
{
dwToRead -= dwRead;
lpPos += dwRead;
}
if (0 == dwToRead)
{
return TRUE;
}
else
{
buffer.Free();
return FALSE;
}
}
DWORD MyFile::Read( DWORD dwToRead, ByteBuffer& buffer )
{
if (0 == dwToRead) return 0;
buffer.Alloc(dwToRead);
DWORD dwRead = 0;
BOOL bRet = ::ReadFile(m_handle, (LPBYTE)buffer, dwToRead, &dwRead, NULL);
if (bRet)
{
return dwRead;
}
else
{
buffer.Free();
return 0;
}
}