Windows: Update version number in Add/Remove Programs on update about zotero-standalone-build HOT 4 OPEN

Updates happen on restart, so the new version always starts up immediately.

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It looks like we'd need to update DisplayVersion in HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\Zotero 5.0.96.2 (x86 en-US) (as long as we're a 32-bit app).

Mozilla seems to do this with the maintenance service, which doesn't help us:

https://searchfox.org/mozilla-central/rev/ac7a567f036e1954542763f4722fbfce041fb752/toolkit/components/maintenanceservice/serviceinstall.cpp#460

https://searchfox.org/mozilla-central/rev/ac7a567f036e1954542763f4722fbfce041fb752/toolkit/components/maintenanceservice/serviceinstall.cpp#31-43

But we could theoretically do this with nsIWindowsRegKey without messing with our updater:

http://udn.realityripple.com/docs/Mozilla/Tech/XPCOM/Accessing_the_Windows_Registry_Using_XPCOm

I guess we could do it on startup when the current DisplayVersion didn't match the current app version. (If so, this would belong in zotero/zotero.)

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But we could theoretically do this with nsIWindowsRegKey without messing with our updater:

We have some example code using this https://github.com/zotero/zotero-word-for-windows-integration/blob/master/resource/installer.jsm#L75

from zotero-standalone-build.

I guess we could do it on startup

Just a minor point, but is there an easy way to make the update happen directly after installation? If the auto-update happens without a restart, the installed and reported-by-ARP versions are out of sync until the next restart.

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