PX_get_opaque — return data passed to error handler

       This manual page was written by Uwe Steinmann uwe@steinmann.cx.

                                                                                                PX_GET_OPAQUE(3)

       Calling  the  error  handler  will pass user data to it as specified with PX_new3(3). The pointer to this
       user data can be retrieve with this function.

       PX_get_opaque — return data passed to error handler

       Returns pointer to user data on success and NULL on failure or if the user data is NULL.

PX_new(3)

       #include <paradox.h>

       void * PX_get_opaque(pxdoc_t *pxdoc)