What is the easiest way to convert a Boolean value into a String in an Inno Setup Pascal script? This trivial task that should be completely implicit seems to require a full-blown if/else construction.
function IsDowngradeUninstall: Boolean; begin Result := IsCommandLineParamSet('downgrade'); MsgBox('IsDowngradeUninstall = ' + Result, mbInformation, MB_OK); end; This doesn't work because "Type mismatch". IntToStr doesn't accept a Boolean neither. BoolToStr does not exist.
If you need it once only, the easiest inline solution is to cast the Boolean to Integer and use the IntToStr function. You get 1 for True and 0 for False.
MsgBox('IsDowngradeUninstall = ' + IntToStr(Integer(Result)), mbInformation, MB_OK); Though, I usually use the Format function for the same result:
MsgBox(Format('IsDowngradeUninstall = %d', [Result]), mbInformation, MB_OK); (Contrary to Delphi) The Inno Setup/Pascal Script Format implicitly converts the Boolean to Integer for %d.
If you need a more fancy conversion, or if you need the conversion often, implement your own function, as @RobeN already shows in his answer.
function BoolToStr(Value: Boolean): String; begin if Value then Result := 'Yes' else Result := 'No'; end; [Code] function BoolToStr(Value : Boolean) : String; begin if Value then result := 'true' else result := 'false'; end; or
[Code] function IsDowngradeUninstall: Boolean; begin Result := IsCommandLineParamSet('downgrade'); if Result then MsgBox('IsDowngradeUninstall = True', mbInformation, MB_OK) else MsgBox('IsDowngradeUninstall = False', mbInformation, MB_OK); end;