Returns an internal handle.
* index=0 returns always an imBinFile* handle,
* but for some formats returns NULL because they do not use imBinFile (like AVI and WMV).
* index=1 return an internal structure used by the format, usually is a handle
* to a third party library structure. This is file format dependent.
*
* \verbatim ifile:Handle() -> handle: userdata [in Lua 5] \endverbatim
* \ingroup file
Returns an internal handle. * index=0 returns always an imBinFile* handle, * but for some formats returns NULL because they do not use imBinFile (like AVI and WMV). * index=1 return an internal structure used by the format, usually is a handle * to a third party library structure. This is file format dependent. * * \verbatim ifile:Handle() -> handle: userdata [in Lua 5] \endverbatim * \ingroup file