About AEGP\IO

Hello,
I have a question about AEIO plugin, where is the structure definition of AEIO_OutSpecH, I do not see in any header file. I do see that is is defined as
typedef struct AEIO_OutSpec **AEIO_OutSpecH;
in aeio.h, however do not see the actual structure of this type. Any help is appreciated

There's no public documentation of the error message numbers; they refer to specific functions within After Effects.

Was not the AEGP IO sample source code and it solved by the fact that the FBIO sample source code is referred to.
After all, the viewpoint of error message number was not recognized, teaching?
For example (ErrNum_Xn and ErrNum_Yn) in, as for ErrNum_Xn being classified into some type? In the same way as for ErrNum_Yn being...?
In addition as for reference document of error code summary?

That's a very generic message. Set breakpoints in your plug-in to see where the problem lies.

Hi,
Reply thank you.
Following to message, the error number which is indicated is (39,10)

What's the error number? Perhaps you're not releasing something passed to you by the AE API?