Long descriptions on Inno Setup components

Question

I am building an install with Inno Setup and I am using the components section to allow the end user to select optional items to install.

Some of these items need a

Answer 1

Use this advanced compiler (download link is somewhere below).

It supports more classes and events than the standard compiler. You can access the property "OnItemMouseMove". Using this you can store a description for every item that is shown by a label. Here is an example:

var
CompLabel: TLabel;

procedure OnItemMouseMove(Sender: TObject; X, Y: Integer; Index: Integer; Area: TItemArea);
begin
  case Index of
    0: CompLabel.Caption := 'This is the description of Component 1';
    1: CompLabel.Caption := 'This is the description of Component 2';
    2: CompLabel.Caption := 'This is the description of Component 3';
    3: CompLabel.Caption := 'This is the description of Component 4'
  else
    CompLabel.Caption := 'Move your mouse over a component to see its description.';
  end;
end;

procedure OnMouseLeave(Sender: TObject);
begin
  CompLabel.Caption := 'Move your mouse over a component to see its description.';
end;

procedure InitializeWizard();
begin
  CompLabel := TLabel.Create(WizardForm);
  CompLabel.Parent := WizardForm.SelectComponentsPage;
  CompLabel.SetBounds(WizardForm.ComponentsList.Left,180,WizardForm.ComponentsList.Width,200);
  CompLabel.Caption := 'Move your mouse over a component to see its description.';
  WizardForm.ComponentsList.OnItemMouseMove := @OnItemMouseMove;
  WizardForm.ComponentsList.OnMouseLeave := @OnMouseLeave;
  WizardForm.ComponentsList.Height := WizardForm.ComponentsList.Height - 40;
end;