inno-setup

Change messages/texts at runtime (Inno Setup)

In an innosetup script it is possible to define messages like this:

[Messages]
WelcomeLabel2=This wizard will update [name] to version [name/ver]

Now I would like to change this message at runtime, like this:

procedure InitializeWizard;
begin
    //this doesn't work        
    WelcomeLabel2=NEW MESSAGE 
end;

What is the correct way to do this? I want to dynamically change the contents of the welcome page to display whether the setup is performing a new installation or update. Based on the existence of some executables in the installation directory.

Solution

  • One way;

    [Languages]
Name: "en"; MessagesFile: "compiler:Default.isl"

[CustomMessages]
en.WelcomeLabel2_ForInstall=install {#SetupSetting("AppName")}, {#SetupSetting("AppVersion")}
en.WelcomeLabel2_ForUpdate=update {#SetupSetting("AppName")} to {#SetupSetting("AppVersion")}

[code]
procedure InitializeWizard(); 
var
  message: string;
begin 
    //some logic
    message := 'WelcomeLabel2_ForUpdate';
    WizardForm.WelcomeLabel2.Caption := CustomMessage(message);
end;

procedure CurPageChanged(CurPageID: Integer);
begin
  case CurPageID of
      wpFinished : WizardForm.FinishedLabel.Caption := 'bla bla';
  end;
end;