Inno Setup: How to watch variables values or write to debug output?

Question

How can I watch values of variables while debugging in Inno Setup? How can I print something to debug output?

Thanks

Solution

There's currently no debug watch window, but you can simply hover the variable you want to inspect, when the debugger is stopped on a breakpoint. To print something to a debug output, use the Log procedure:

procedure InitializeWizard;
var
  Value: Integer;
begin
  Value := 123;
  Log('The Value is: ' + IntToStr(Value));
end;

Here is the result of the hovered Value variable from the previous script sample:

And the result of the debug output window after when you step over the Log statement: