page = doc:InsertPage(target)
doc:InsertPage()
creates a new page and inserts it just before the specified page.
doc:InsertPage()
returns the handle of the newly created page object on success.
Otherwise, it returns Nil
and the error handler is called.
#HPDF_INVALID_DOCUMENT
- An invalid document handle was set.
#HPDF_FAILED_TO_ALLOC_MEM
- Memory allocation failed.
#HPDF_INVALID_PAGE
- An invalid page handle was set.