Hi, I'm not sure if it's a problem, either, but the following article on MSDN states that a side-by-side assembly should be authored to support the concurrent use of multiple version in the same process:
http://msdn.microsoft.com/en-us/library/aa374238%28v=VS.85%29.aspx Your scenario is described at the top of the list. I guess you can expect that the bunch of assemblies that ship with Windows support that scenario but I don't know if that will be true for most of the open-source libraries CoApp is aiming at. Marc ________________________________________ Von: coapp-developers-bounces+marc.rittinghaus=student.kit....@lists.launchpad.net [coapp-developers-bounces+marc.rittinghaus=student.kit....@lists.launchpad.net] im Auftrag von Gordon Schumacher [[email protected]] Gesendet: Donnerstag, 15. April 2010 06:25 An: CoApp Betreff: [Coapp-developers] Another variant of DLL Hell I'm not sure this is within the scope of CoApp... but I'm not sure it isn't, either. I've gotten conflicting answer to this depending on who I've asked (read partially as "where in MSDN I've looked"). Let's pretend for a moment that I'm writing a plugin - say, a shell extension. Now pretend that my shell extension depends on an open-source library "Foo", so I link against libFoo.dll in WhizBangShellExt.dll. This is a brand-new project, so of course I install libFoo 3.141, the latest version. Now let's pretend that a user has installed my WhizBangShellExt, but unbeknownst to me he's previously loaded CrustyExplorer, another shell extension. It also depends on libFoo.dll, but it's a much older application and is no longer supported, so it's installed libFoo 2.718 - and it's even a different major revision, and therefore has a different API. My understanding is that for a given process, there can only be one "libFoo.dll" loaded at a time; if Explorer loads CrustyExplorer.dll first, it'll get libFoo 2.718, and if it loads WhizBangShellExt.dll first, it'll get libFoo 3.141 - which needless to say is rather less than ideal! Have I been misled here, or is this a challenge that might be facing CoApp as well...? _______________________________________________ Mailing list: https://launchpad.net/~coapp-developers Post to : [email protected] Unsubscribe : https://launchpad.net/~coapp-developers More help : https://help.launchpad.net/ListHelp _______________________________________________ Mailing list: https://launchpad.net/~coapp-developers Post to : [email protected] Unsubscribe : https://launchpad.net/~coapp-developers More help : https://help.launchpad.net/ListHelp
