/// <summary>
/// Sets the current position in a file to the given value.
/// </summary>
/// <param name="hf">The handle of an open file.</param>
/// <param name="dist">The number of bytes to move the pointer.</param>
/// <param name="seekType">The starting position for the move. Values are SEEK_CUR, SEEK_END, or SEEK_SET.</param>
/// <returns>Returns the new file position. Returns -1 on error.</returns>
/// <remarks>The File Decompression Interface (FDI) calls this function to position the file pointer.</remarks>
protected virtual int FileSeek(IntPtr hf, int dist, int seektype)
{
Trace.WriteLine(string.Format("FileSeek {0}", hf));
int err = 0;
try
{
return(CabIO.FileSeek(hf, dist, seektype, ref err, userData));
}
finally
{
erf.ErrorType = err;
}
}
/// <summary>
/// Sets the current position in a file to the given value.
/// </summary>
/// <param name="hf">The handle of an open file.</param>
/// <param name="dist">The number of bytes to move the pointer.</param>
/// <param name="seekType">The starting position for the move. Values are SEEK_CUR, SEEK_END, or SEEK_SET.</param>
/// <param name="err">Error return value.</param>
/// <param name="pUserData">User data object.</param>
/// <returns>Returns the new file position. Returns -1 on error.</returns>
/// <remarks>The File Compression Interface (FCI) calls this function to position the file pointer.</remarks>
protected virtual int FileSeek(IntPtr hf, int dist, int seekType,
ref int err, IntPtr pUserData)
{
Trace.WriteLine(string.Format("FileSeek {0}", hf));
return(CabIO.FileSeek(hf, dist, seekType, ref err, ((GCHandle)pUserData).Target));
}
