更换安装类型的单选按钮下拉列表(Replace installation types Dropdow

我最近添加不同的安装类型（安装，更新，维修），以我的InnoSetup。这一切都workes相当优良。

[Types]
Name: Install; Description: "Install OLP"; 
Name: Update; Description: "Update an existing version of OLP"; 
Name: Repair; Description: "Repair OLP";

我不喜欢那么多的唯一的事情是下拉列表中，当安装运行，选择安装类型之一出现。

有没有办法通过一个单选按钮组，以取代下拉列表？

谢谢

Answer 1:

您可以使用单选按钮（因为有在Inno Setup的使用没有无线电组件组）：

[Code]
procedure OnTypeChange(Sender: TObject);
begin
  { set the item index in hidden TypesCombo }
  WizardForm.TypesCombo.ItemIndex := TNewRadioButton(Sender).Tag;
  { notify TypesCombo about the selection change }
  WizardForm.TypesCombo.OnChange(nil);
end;

procedure InitializeWizard;
var
  I: Integer;
  RadioButton: TNewRadioButton;
begin
  for I := 0 to WizardForm.TypesCombo.Items.Count - 1 do
  begin
    { create radio button and set the basic properties }
    RadioButton := TNewRadioButton.Create(WizardForm);
    RadioButton.Parent := WizardForm.SelectComponentsPage;
    RadioButton.Left := WizardForm.TypesCombo.Left;
    RadioButton.Top := WizardForm.TypesCombo.Top + I * RadioButton.Height;
    RadioButton.Width := WizardForm.TypesCombo.Width;
    { check just the first item }
    RadioButton.Checked := I = 0;
    RadioButton.Caption := WizardForm.TypesCombo.Items[I];
    { the Tag property substitutes the index property }
    RadioButton.Tag := I;
    RadioButton.TabOrder := I;     
    RadioButton.OnClick := @OnTypeChange;
  end;
  { hide the TypesCombo combo box }
  WizardForm.TypesCombo.Visible := False;

  { if you're not using the "iscustom" flag in any type entry, you can remove }
  { the following lines, because they resize and reposition the check list box }
  { for component selection, which is hidden, if you don't use "iscustom" flag }
  I := WizardForm.ComponentsList.Top - 
    (RadioButton.Top + RadioButton.Height + 8);
  WizardForm.ComponentsList.Top := RadioButton.Top + RadioButton.Height + 8;
  WizardForm.ComponentsList.Height := WizardForm.ComponentsList.Height + I;
end;

而结果（包括iscustom组件列表）：

或者你可以使用如检查列表框，这是能够包含Inno Setup的单选按钮：

[Code]
procedure OnTypeChange(Sender: TObject);
begin
  { set the item index in hidden TypesCombo }
  WizardForm.TypesCombo.ItemIndex := TNewCheckListBox(Sender).ItemIndex;
  { notify TypesCombo about the selection change }
  WizardForm.TypesCombo.OnChange(nil);
end;

procedure InitializeWizard;
var
  I: Integer;
  CheckListBox: TNewCheckListBox;
begin
  { create the TNewCheckListBox object and set the basic properties }
  CheckListBox := TNewCheckListBox.Create(WizardForm);
  CheckListBox.Parent := WizardForm.SelectComponentsPage;
  CheckListBox.Left := WizardForm.TypesCombo.Left;
  CheckListBox.Top := WizardForm.TypesCombo.Top;
  CheckListBox.Width := WizardForm.TypesCombo.Width;
  CheckListBox.Height := CheckListBox.MinItemHeight * 
    WizardForm.TypesCombo.Items.Count + 4;
  CheckListBox.TabOrder := 0;
  { assign the selection change event }
  CheckListBox.OnClickCheck := @OnTypeChange;
  { add radio buttons from all TypesCombo items, select the first item }
  for I := 0 to WizardForm.TypesCombo.Items.Count - 1 do
    CheckListBox.AddRadioButton(WizardForm.TypesCombo.Items[I], 
      '', 0, I = 0, True, nil);
  { hide the TypesCombo combo box }
  WizardForm.TypesCombo.Visible := False;

  { if you're not using the "iscustom" flag in any type entry, you can remove }
  { the following lines, because they resize and reposition the check list box }
  { for component selection, which is hidden, if you don't use "iscustom" flag }
  I := WizardForm.ComponentsList.Top - 
    (CheckListBox.Top + CheckListBox.Height + 8);
  WizardForm.ComponentsList.Top := CheckListBox.Top + 
    CheckListBox.Height + 8;
  WizardForm.ComponentsList.Height := WizardForm.ComponentsList.Height + I;
end;

而结果（包括iscustom组件列表）：

Answer 2:

这方面的一个整洁的解决办法是使用CreateInputOptionPage创建具有前的组件选择页面单选按钮一个单独的页面。（有这个在CodeDlg.iss脚本的例子。）

一个更整洁的选择是不问可言，因为它是完全不必要的。您可以自动检测到已经安装的版本 - 如果不是安装它，它的安装，如果它安装，但年纪大了，这是一个升级，如果它的安装和相同的版本，那么它是一个修复，最后如果它安装，但新那么它是一个降级 - 你可能想要么禁止（更安全），或者许可证，但显示警告（更方便，如果很可能是人们可能要降级）。