Quit NSIS if REG Entry Not Present

[gruntlord6]

Originally Posted by jpderuiter

http://nsis.sourceforge.net/Abort

Thanks for the help! That solves half my problem. Can you tell me how I would perform the check? I would imagine something like:

code:
Function onInit

If RegKey HKLM "Software\(My Application)" "" false:

MessageBox MB_OK "You need (My Application) installed to use this installer."

Abort

FunctionEnd

I hope I don't seem lazy, I would just like an example to work from.