How to access InstallDirRegKey in NSIS

Question

I can specify installation directory and registry value in NSIS like this:

InstallDir "$PROGRAMFILES\CTVI"
InstallDirRegKey HKLM "Software\CTVI" "Install_Dir"

Now I can access InstallDir by using the notation $INSTDIR throughout the script. How do I similarly access InstallDirRegKey ? Is there a similar notation as there exists for InstallDir ? I tried $INSTDIRREGKEY but that is not. Now what I do is that I type HKLM "Software\\CTVI" "Install_Dir" everytime I require it. But that is not so DRY :)

Answer 1

使用InstallDirRegKey属性时，NSIS将在启动时查找指定的注册表项，如果找到路径，则会在任何代码运行之前将该值放在$Instdir ...