WPViewPDF 4.01.5.2 adds a new command to check if the document was modified (i.e. if pages were moved).
There is now a new function pdfMakeImageExt which allows it to load PDF data from an IStream interface and save the created bitmap (or bitmaps) to an IStream.
Now you can use WPViewPDF with the VCL
imaging component ImageEn to open PDF data. A read to use plugin unit has been provided.
A VCL Demo for WPTools within Delphi 10.1 Berlin has been published
here.