windows - How to make thumbnail and preview work for shortcut file on Win 7/8 -

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i learning write windows shell thumbnail handler (ithumbnailprovider implementation), according sample project microsoft (https://code.msdn.microsoft.com/windowsapps/cppshellextthumbnailhandler-32399b35).

everything works fine until noticed there 1 problem thumbnail handler: shortcut file links file type registered sample dll, cannot show thumbnail , preview on windows 7/8/8.1, works on windows 10. screenshot might better demonstrate issue.

on windows 7: shortcut files not showing thumbnail or preview on windows 7

from screenshot, can see shortcut links .recipe file cannot show thumbnail , preview. tried sumatra , adobe acrobat reader, neither of them work.

however, powerpoint 2016 (.pptx) somehow works without problem.

here's screenshot taken on windows 10: thumbnail , preview works on windows 10

any idea how make thumbnail/preview work on windows 7/8?


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