Inno Setup parameter with quotes in [Run] section

Question

I use [Run] section to modify the merit value of some codecs with commandmerit.exe that supports command-line.

So the syntax is:

Answer 1

I can see two different things in your problem.

First, is the { having a special meaning in inno setup, because it is the start of a constant. So, you have to escape the { by doubling it, e.g. {{. There is no need to escape the closing bracket because it is treated as the end of a constant only if it is a start for that constant.

Second, is that you're trying to pass " as part of the string, but that seems unnecessary in this case, since the purpose of the " character in the command line parameters is to allow the use of blank spaces inside a single parameter, but none of your parameters have spaces.

All that said, you must try writing your command like this:

[run]
Filename: "{app}\Commandmerit.exe"; Parameters: {{F8FC6C1F-DE81-41A8-90FF-0316FDD439FD} 0x10000000; WorkingDir: "{app}"

Answer 2

To add quotes to a parameter, you must double up each quote, and then put quotes around the entire value.

Your second attempt was close but you forgot the middle ones.

Filename: "{app}\Commandmerit.exe"; Parameters: """{F8FC6C1F-DE81-41A8-90FF-0316FDD439FD}"" ""0x10000000"""; WorkingDir: "{app}"