If all copies of the shared component are installed using the exact same GUID w/ MSI then you don't need that bit. However, if any installations occur that don't share that same GUID, both installations should be using that bit.
You will need to inspect into (or experiment with) your old InstallShield packages to see what they are doing. The web page describing the shared DLL registration system is: http://msdn.microsoft.com/en-us/library/ms709304(VS.85).aspx and according to this page (http://msdn.microsoft.com/en-us/library/aa368007(VS.85).aspx) if the keypath is found in that registry key it's increment count/etc. will be honored regardless of this bit being set. If the keypath isn't found it won't be added to this registry key unless this bit is set. -----Original Message----- From: Ondrej Zarevucky [mailto:ondrej.zarevu...@fine.cz] Sent: Tuesday, July 28, 2009 2:15 AM To: General discussion for Windows Installer XML toolset. Subject: [WiX-users] Reguirements for shared DLLs between more then one product of one company Hi, reading the new messages in the mailing list I've noticed the Phil Wilson mentioning msidbComponentAttributesSharedDllRefCount bit (SharedDllRefCount Component attribute in WiX) I'm asking: We are preparing MSI installation for more products, but these products share some files in Program Files/Common Files/Fine Shared/... It is required to use SharedDllRefCount attribute? Currently we are setting the same GUID to the all instances of the same one-file components. BTW: The old installation was authored in old InstallShield 5.5 and I'm not sure, how it worked there. Until the process of upgrading all installations to MSI is done, there may be some products installed with InstallShield and with MSI and they have to work side by side. Thank you for clarification. Ondrej Zarevucky ---------------------------------------------------------------------------- -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users
