This callback allows the communication of page-level information via a callback/API call combination. It is called upon the completion of each page that is exported and gives the zero-based page number of the page exported. Information on whether or not a page is hidden or if a page has slide notes, as specified in the input document, can be retrieved when this callback is received. You can retrieve this information with the API call EXGetProperties.
SCCERR_OK or SCCERR_NOTHANDLED should be returned