My WPF mod of PdfiumViewer

PdfiumViewerWPFSimple

• https://github.com/pvginkel/PdfiumViewer
• https://github.com/reliak/moonpdf
• http://git.oschina.net/weimingtom/pdfiumviewermod

• v1: full page paint
• v2: clip page paint
• v3: auto switch between page cache paint and clip page paint (first sync to github).
• v4: ink annot and undo tool, mupdf annot writer (mupdfannot.exe).
• v5: annot improving.

See https://github.com/weimingtom/pdfium_fork_build
But I don't use my built dll in this project