pdfium 代码执行流程

1.FPDF_InitLibrary(NULL);

CPDF_CustomAccess::CPDF_CustomAccess(FPDF_FILEACCESS* pFileAccess)

{

if (pFileAccess)

m_FileAccess = *pFileAccess;

}

FPDF_LoadCustomDocument

CPDF_CustomAccess* pFil

int first_page = FPDFAvail_GetFirstPageNum(doc);
(void) FPDFAvail_IsPageAvail(pdf_avail, first_page, &hints);

e = FX_NEW CPDF_CustomAccess(pFileAccess);

int page_count = FPDF_GetPageCount(doc); //页数统计

FPDF_DOCUMENT doc;