Upgrade DLLs ONLY if the installed version is lower?

7 posts

SnoverMay 5, 2003 at 7:25 PM#

Upgrade DLLs ONLY if the installed version is lower?

I'm not sure how to work this, since there is no inequality stuff in NSIS that I know of. I can GET the DLL version sure and I can check if they are EQUAL but as far as I know there's no way of doing this. So, anyone?

Joost VerburgMay 5, 2003 at 7:45 PM#

Use the UpgradeDLL macro. You can find this macro in the NSIS 2 documentation or in the archive: http://nsis.sourceforge.net/archive/....php?pageid=38

And about the inequality stuff: IntCmp can jump to different locations when the value is lower, equal or higher.

SunjammerMay 5, 2003 at 7:46 PM#

Well IntCmp won't jump anywhere in the case of <> so that's at least one way.

SnoverMay 5, 2003 at 8:09 PM#

Can I concatenate strings and then test?

Joost VerburgMay 6, 2003 at 9:31 AM#

What do you mean? And why not use UpgradeDLL?

SnoverMay 6, 2003 at 4:16 PM#

Does UpdateDLL actually check versions before it upgrades? I was under the impression that it just automated the process of reboot-overwriting DLLs that couldn't be removed.

Joost VerburgMay 6, 2003 at 7:24 PM#

UpgradeDLL first checks the version. It only updates if an older DLL is installed. It also handles registering, reboots, register-on-reboot etc.