status = page:SetWidth(value)
page:SetWidth()
#HPDF_INVALID_PAGE
#HPDF_PAGE_INVALID_SIZE - An invalid size was set.
#HPDF_PAGE_INVALID_SIZE
#HPDF_FAILED_TO_ALLOC_MEM - Memory allocation failed.
#HPDF_FAILED_TO_ALLOC_MEM