InstallAware

I am using Parse String to try and work out the length of a string.

I am splitting a string at position 21
Parse String $VMS_SERIALNUM$ into Variables VMS_SERIAL_A and VMS_SERIAL_B (Split at position from start)
However if VMS_SERIALNUM is say 12 chars, VMS_SERIAL_A is 12 chars long, so I can't tell how long this string is if it is less than the requried length.

How can I detect the length of a string using this or another method?

You can use the Call DLL Function to invoke lstrlenA in kernel32.dll.

Here is a code that does this (paste this in IA):

Thanks Aviv - which operating system can this be used on? XP, Vista, 7, 2003, 2008 will work I am assuming?

This works on a minimum OS of Windows 2000.