lai
4th May 2006 18:38 UTC

auto-uninstall when installation failed
Hi,
If an installer aborts in the middle of the installation, is there any way to call uninstaller to clean up files that were installed up to when the installer aborts.

Thanks!

Red Wine
4th May 2006 19:00 UTC

Hi,
you may use the functions .onInstFailed and .onUserAbort to simulate a rollback, removing all changes made by your installer. :-)

lai
4th May 2006 19:14 UTC

Hi,
I copied the code that's in un.onInit function to .onInstFailed function. But it didn't successfully removed the installed files.

Function un.onInit
ReadRegStr $INSTDIR HKLM "${REGKEY}" Path
ReadRegStr $StartMenuGroup HKLM "${REGKEY}" StartMenuGroup
!insertmacro SELECT_UNSECTION Component1 ${UNSEC0000}
FunctionEnd

Function .onInstFailed
ReadRegStr $INSTDIR HKLM "${REGKEY}" Path
ReadRegStr $StartMenuGroup HKLM "${REGKEY}" StartMenuGroup
!insertmacro SELECT_UNSECTION Component1 ${UNSEC0000}
MessageBox MB_OK "Installation of $(^Name) Failed"
FunctionEnd


how do I debug this problem?

Thanks!

Red Wine
4th May 2006 19:27 UTC

this is not enough, you have to call a custom function and perform actions e.g. when .onInstFailed and/or .onUserAbort is true, then remove these files from that dir, remove those entries from registry, stop that service etc. You could write a specific uninstaller for this case, extract it only when the case is true, and simulate the "perform rollback" action like other applications do. :-)

lai
4th May 2006 19:52 UTC

thanks! got it. :)