c++ - Why upon explorer window closing several GetClipboardData are launched? -


i m developping little soft notify users when pasting content in unauthorized applications, hook getclipboarddata so. working fine when copy content word example, click on internetexplorer, open explorer window , close it, getclipboarddata launched explorer. can me understand behavior ? in advance regards

it common receive unexpected clipboard events applications, microsoft, when things closing windows or doing makes application stop , think: "hey, maybe left crap on clipboard, i'd better clean up, maybe re-post plain text without ole stuff, maybe did that, can't remember, i'll again." it's sort of ocd build everthing. pop-up saying "you've placed large amount of data on clipboard, make available other applications" when quit program. that's same thing. basically, they've put bunch of formats on clipboard require "delayed rendering" pasteable. , app worried leaving invalid data on clipboard, has re-post data without fancy formats. you'll if copy cell excel, , un-highlight cell. if clipboard event when starting app, it's add-in hooking clipboard chain, or perhaps committing worst sin of all: copy/pasting icon toolbar.


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