Install files if command-line switch is passed to

Question

I want to know, if there is a way to add some command line parameters to Inno Setup based installer for /VERYSILENT mode, if for example I have theses checks:

Source: "{app}\Portable-File.exe"; DestDir: "{app}"; MinVersion: 0.0,5.0; Check: install1;
Source: "{app}\Installer-File.exe"; DestDir: "{app}"; MinVersion: 0.0,5.0; Check: porta1;

And I have these lines based in my two examples checks:

"MyProgram.exe" /VERYSILENT /install1 /EN
"MyProgram.exe" /VERYSILENT /porta1 /EN

Answer 1

Implement the install1 and porta1 functions like:

function HasCommandLineSwitch(Name: string): Boolean;
var
  I: Integer;
begin
  Result := False;

  for I := 1 to ParamCount do
  begin
    if CompareText(ParamStr(I), '/' + Name) = 0 then
    begin
      Result := True;
      Break;
    end;
  end;
end;

function install1: Boolean;
begin
  Result := HasCommandLineSwitch('install1');
end;

function porta1: Boolean;
begin
  Result := HasCommandLineSwitch('porta1');
end;

---

You can actually use the HasCommandLineSwitch directly in the Check parameter:

[Files]
Source: "Portable-File.exe"; DestDir: "{app}"; Check: HasCommandLineSwitch('install1')
Source: "Installer-File.exe"; DestDir: "{app}"; Check: HasCommandLineSwitch('porta1')

Though I assume that your install1 and porta1 function will actually do more than just call HasCommandLineSwitch, so this is probably not applicable to you.

---

Actually, as I know that you have checkboxes that correspond to install1 and porta1, what you really want to do, is to check those checkboxes, when the installer is starting, if the switches are specified. This way you can use /install1 and /porta1 to set default values, even if not used in combination with /verysilent. And it will still work even in the /verysilent more, even though the user will actually never see the checkboxes (they are still present, even though not visible)

install1 := TNewRadioButton.Create(WizardForm); 
install1.Checked := HasCommandLineSwitch('install1');

porta1 := TNewRadioButton.Create(WizardForm); 
porta1.Checked := HasCommandLineSwitch('porta1');

And you keep your install1 and porta1 function to return the state of the checkboxes, as seen in Inno Setup Set Uninstallable directive based on custom checkbox value.