Logging TWindowsVersion in Inno Setup

Previously I was using:

{ Check Windows Version }
WindowsVersion := GetWindowsVersion;
Log(Format('Windows Version: %x', [WindowsVersion]));

Now I am using:

{ Check Windows Version }
GetWindowsVersionEx(WinVer);
WinVerPacked := PackVersionComponents(WinVer.Major, WinVer.Minor, WinVer.Build, 0);

Where WinVer is of type TWindowsVersion. How do we now handle the Log entry?

Solution

Why do you want to log it, if it is logged already by Inno Setup?

2020-11-17 16:26:59.234   Windows version: 10.0.19041  (NT platform: Yes)

Anyway, there's nothing preventing you from continuing to use GetWindowsVersion for logging purposes, even if you now use GetWindowsVersionEx for the version check.
PackVersionComponents return value is actually similar to GetWindowsVersion, so you can log it directly:
```
Log(Format('Windows Version: %x', [WinVerPacked]));
```
It will just have more zeroes in the output:
```
2020-11-17 16:26:59.337   Windows Version: A00004A610000
```
Though it's similarly user unfriendly as your previous logging of GetWindowsVersion:
```
2020-11-17 16:26:59.337   Windows Version: A004A61
```

More user friendly is indeed to use TWindowsVersion components.

Log(Format('Windows Version: %d.%d.%d', [WinVer.Major, WinVer.Minor, WinVer.Build]));

That will get you what Inno Setup logs in its header:

2020-11-17 16:26:59.337   Windows Version: 10.0.19041