Please, could you tell me if 64-bit is a dead-end for this function?
I imagine the explorer.exe in Windows 64-bit is also 64-bit and uses IExtractImage so using 64-bit shouldn't be a dead-end.
I'm on Windows 10 64-bit but I don't see pdf-content in my thumbnails. I do see them in the preview screen but that's a different process (I think).
On both Laz32 / Win64 and Laz64 / Win64 I can extract jpg image.
On both Laz32 / Win64 and Laz64 / Win64 I get the generic pdf thumbnail when choosing a pdf.
On both Laz32 / Win64 and Laz64 / Win64 I get a SIGSEGV when I choose a LibreOffice document.
(The LibreOffice documents have correct thumbnails, with content, but no preview)
I need to find out why the LibreOffice documents give me a SIGSEGV.
Edit: Okay, this is a bummer:
We had to remove the thumbnail preview functionality from Acrobat and Reader DC for technical reasons. We know there are users who value it but certain design considerations forced us to make this change.
(In short, if you want PDF thumbnail previews, do NOT upgrade to Reader DC, because it breaks this thumbnail fix…)
Does anybody have thumbnails for new pdf's and Reader DC installed?
Edit #2:
Installing something like
PDF Preview and setting it as default viewer I got my thumbnail back for PDFs. The 64-bit program you supplied works for me with Lazarus 64-bit on Windows 10 64-bit.