How to display a larger license box in an InnoSetup installer?

InnoSetup by default displays the license agreement in a really tiny text area that the user can't make bigger in any way.

While I know most people don't read these, I feel that providing it in a format that makes it particularly hard to read is a bad idea, and might form part of a defense in court.

Is there any way in InnoSetup to display the license in a large separate window? A pre-rolled Pasc开发者_JS百科al script perhaps?

You can change the WizardForm size and rearrange the controls in it if you want to make it bigger. I made this example to show you how to change the form height for the License page.

[Setup]
AppName=StackOverflow large license box
AppVersion=1.0
CreateAppDir=no
DisableProgramGroupPage=yes
DefaultGroupName=My Program
UninstallDisplayIcon={app}\MyProg.exe
LicenseFile=license.txt
;OutputDir=userdocs:Inno Setup Examples Output

[Code]

var
  DefaultTop, 
  DefaultLeft, 
  DefaultHeight,
  DefaultBackTop, 
  DefaultNextTop, 
  DefaultCancelTop,
  DefaultBevelTop, 
  DefaultOuterHeight: Integer;

const 
  LicenseHeight = 600;

procedure InitializeWizard();
begin
  DefaultTop := WizardForm.Top;
  DefaultLeft := WizardForm.Left;
  DefaultHeight := WizardForm.Height;
  DefaultBackTop := WizardForm.BackButton.Top;
  DefaultNextTop := WizardForm.NextButton.Top;
  DefaultCancelTop := WizardForm.CancelButton.Top;
  DefaultBevelTop := WizardForm.Bevel.Top;
  DefaultOuterHeight := WizardForm.OuterNotebook.Height;

  WizardForm.InnerPage.Height := WizardForm.InnerPage.Height + (LicenseHeight - DefaultHeight);
  WizardForm.InnerNotebook.Height :=  WizardForm.InnerNotebook.Height + (LicenseHeight - DefaultHeight);
  WizardForm.LicensePage.Height := WizardForm.LicensePage.Height + (LicenseHeight - DefaultHeight);
  WizardForm.LicenseMemo.Height := WizardForm.LicenseMemo.Height + (LicenseHeight - DefaultHeight);
  WizardForm.LicenseNotAcceptedRadio.Top := WizardForm.LicenseNotAcceptedRadio.Top + (LicenseHeight - DefaultHeight);
  WizardForm.LicenseAcceptedRadio.Top := WizardForm.LicenseAcceptedRadio.Top + (LicenseHeight - DefaultHeight);

end;

procedure CurPageChanged(CurPageID: Integer);
begin
  if CurPageID = wpLicense then
  begin
    WizardForm.Top := DefaultTop - (LicenseHeight - DefaultHeight) div 2;
    WizardForm.Height := LicenseHeight;
    WizardForm.OuterNotebook.Height := WizardForm.OuterNotebook.Height + (LicenseHeight - DefaultHeight);
    WizardForm.CancelButton.Top := DefaultCancelTop + (LicenseHeight - DefaultHeight);
    WizardForm.NextButton.Top := DefaultNextTop + (LicenseHeight - DefaultHeight);
    WizardForm.BackButton.Top := DefaultBackTop + (LicenseHeight - DefaultHeight);
    WizardForm.Bevel.Top := DefaultBevelTop + (LicenseHeight - DefaultHeight);
  end
  else 
  begin
    WizardForm.Top := DefaultTop;
    WizardForm.Left := DefaultLeft;
    WizardForm.Height := DefaultHeight;
    WizardForm.OuterNotebook.Height := DefaultOuterHeight;
    WizardForm.CancelButton.Top := DefaultCancelTop;
    WizardForm.NextButton.Top := DefaultNextTop;
    WizardForm.BackButton.Top := DefaultBackTop;
    WizardForm.Bevel.Top := DefaultBevelTop;
  end;
end;

Copy it to a new iss file and provide a valid license.txt file in order to compile successfully. The script is tested with inno 5.4.0 but it should work with any 5.x.

Resizing the license box didn't work too well, so instead we ended up providing a button to view the license in WordPad. This works surprisingly well; I rather liked it in the end. Code:

procedure ViewLicenseButtonClick(Sender: TObject);
var WordpadLoc: String;
    RetCode: Integer;
begin
  RegQueryStringValue(HKLM, 'SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\WORDPAD.EXE', '', WordpadLoc);

  // on NT/2000 it's a REG_EXPAND_SZ, so expand constant ProgramFiles
  StringChange(WordpadLoc, '%ProgramFiles%', ExpandConstant('{pf}'));
  // remove " at begin and end pf string
  StringChange(WordpadLoc, '"', '');

  try
    ExtractTemporaryFile('LicenseAgreement.rtf')
  except
    MsgBox('Cannot extract license file.', mbError, mb_Ok);
  end;

  if not Exec(WordpadLoc, '"' + ExpandConstant('{tmp}\LicenseAgreement.rtf') + '"', '', SW_SHOW, ewNoWait, RetCode) then
    MsgBox('Cannot display license file.', mbError, mb_Ok);
end;

procedure CurPageChanged(CurPageID: Integer);
var ViewLicenseButton: TButton;
begin
  if CurPageID = wpLicense then begin
    ViewLicenseButton := TButton.Create(WizardForm.LicenseMemo.Parent);
    ViewLicenseButton.Caption := '&View in WordPad';
    ViewLicenseButton.Width := 120;
    ViewLicenseButton.Left := WizardForm.LicenseMemo.Left +
                        WizardForm.LicenseMemo.Width - ViewLicenseButton.Width;
    ViewLicenseButton.Top := WizardForm.LicenseMemo.Top +
                        WizardForm.LicenseMemo.Height + 16;
    ViewLicenseButton.OnClick := @ViewLicenseButtonClick;
    ViewLicenseButton.Parent := WizardForm.LicenseAcceptedRadio.Parent;
  end;
end;

If you use the LicenseFile directive than Inno expects a plain text or RTF file. If you provide an RTF file you can set the font and other simple formatting (bold, italic etc) as you wish.