如何删除自定义向导输入栏inno安装程序？

所以我知道你可以使用.add方法添加一个自定义字段......有什么方法可以删除它吗？如何删除自定义向导输入栏inno安装程序？

原因是我只添加字段，如果一个组件被选中，并且如果用户返回，我想删除字段，以便它们不会相乘。 :)

谢谢！

这里是我的.iss：（我正打算把代码中OnBackButtonClick功能......这就是为什么它的存在;）

; Script generated by the Inno Setup Script Wizard. 
; SEE THE DOCUMENTATION FOR DETAILS ON CREATING INNO SETUP SCRIPT FILES! 

#define MyAppName "DXX-Rebirth" 
#define MyAppName1 "D1X-Rebirth" 
#define MyAppName2 "D2X-Rebirth" 
#define MyAppVersion "0.57.0" 
#define MyAppURL "http://www.dxx-rebirth.com/" 
#define MyAppExeName "d1x-rebirth.exe" 
#define MyAppExeName2 "d2x-rebirth.exe" 

[Setup] 
; NOTE: The value of AppId uniquely identifies this application. 
; Do not use the same AppId value in installers for other applications. 
; (To generate a new GUID, click Tools | Generate GUID inside the IDE.) 
AppId={{DF665ED8-D2A7-490A-805F-6677EFFBAB40} 
AppName={#MyAppName} 
AppVersion={#MyAppVersion} 
;AppVerName={#MyAppName} {#MyAppVersion} 
AppPublisherURL={#MyAppURL} 
AppSupportURL={#MyAppURL} 
AppUpdatesURL={#MyAppURL} 
DefaultDirName={pf}\{#MyAppName} 
DefaultGroupName={#MyAppName} 
OutputBaseFilename=Setup 
Compression=lzma 
SolidCompression=yes 

[Languages] 
Name: "english"; MessagesFile: "compiler:Default.isl" 
Name: "german"; MessagesFile: "compiler:Languages\German.isl" 

[Tasks] 
Name: "desktopicon"; Description: "{cm:CreateDesktopIcon}"; GroupDescription: "{cm:AdditionalIcons}"; 
Name: "quicklaunchicon"; Description: "{cm:CreateQuickLaunchIcon}"; GroupDescription: "{cm:AdditionalIcons}"; Flags: unchecked 

[Types] 
Name: "install"; Description: "DXX-Rebirth"; Flags: iscustom 

[Components] 
Name: "d1x"; Description: "D1X"; Types: install 
Name: "d2x"; Description: "D2X"; Types: install 

[Files] 
;D1X Files 
Source: "C:\Documents and Settings\Owner\Desktop\Downloads\d1x-rebirth_v0.57-win\d1x-rebirth_v0.57-win\d1x-rebirth.exe"; DestDir: "{app}\D1X-Rebirth"; Components: d1x; Flags: ignoreversion 
Source: "C:\Documents and Settings\Owner\Desktop\Downloads\d1x-rebirth_v0.57-win\d1x-rebirth_v0.57-win\*"; DestDir: "{app}\D1X-Rebirth"; Excludes: "C:\Documents and Settings\Owner\Desktop\Downloads\d1x-rebirth_v0.57-win\d1x-rebirth_v0.57-win\Missions,C:\Documents and Settings\Owner\Desktop\Downloads\d1x-rebirth_v0.57-win\d1x-rebirth_v0.57-win\Players,C:\Documents and Settings\Owner\Desktop\Downloads\d1x-rebirth_v0.57-win\d1x-rebirth_v0.57-win\Demos,C:\Documents and Settings\Owner\Desktop\Downloads\d1x-rebirth_v0.57-win\d1x-rebirth_v0.57-win\Screenchots"; Components: d1x; Flags: ignoreversion recursesubdirs createallsubdirs 
Source: "C:\Documents and Settings\Owner\Desktop\Downloads\d1x-rebirth_v0.57-win\d1x-rebirth_v0.57-win\Missions"; DestDir: "{app}\D1X-Rebirth"; Components: d1x; Flags: ignoreversion recursesubdirs createallsubdirs onlyifdoesntexist 
Source: "C:\Documents and Settings\Owner\Desktop\Downloads\d1x-rebirth_v0.57-win\d1x-rebirth_v0.57-win\Players"; DestDir: "{app}\D1X-Rebirth"; Components: d1x; Flags: ignoreversion recursesubdirs createallsubdirs onlyifdoesntexist 
Source: "C:\Documents and Settings\Owner\Desktop\Downloads\d1x-rebirth_v0.57-win\d1x-rebirth_v0.57-win\Demos"; DestDir: "{app}\D1X-Rebirth"; Components: d1x; Flags: ignoreversion recursesubdirs createallsubdirs onlyifdoesntexist 
Source: "C:\Documents and Settings\Owner\Desktop\Downloads\d1x-rebirth_v0.57-win\d1x-rebirth_v0.57-win\Screenshots"; DestDir: "{app}\D1X-Rebirth"; Components: d1x; Flags: ignoreversion recursesubdirs createallsubdirs onlyifdoesntexist 
;D1 Main Files 
Source: "{code:Descent}\descent.hog"; DestDir: "{app}\D1X-Rebirth"; Components: "d1x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:Descent}\descent.pig"; DestDir: "{app}\D1X-Rebirth"; Components: "d1x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
;D1 Missions 
Source: "{code:Descent}\*.hog"; DestDir: "{app}\D1X-Rebirth\Missions"; Components: "d1x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:Descent}\*.msn"; DestDir: "{app}\D1X-Rebirth\Missions"; Components: "d1x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:Descent}\*.rdl"; DestDir: "{app}\D1X-Rebirth\Missions"; Components: "d1x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:Descent}\Missions\*"; DestDir: "{app}\D1X-Rebirth\Missions"; Components: "d1x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:Descent}\descent.hog"; DestDir: "{app}\D1X-Rebirth\Missions"; Components: "d1x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist deleteafterinstall 
;D1 Players 
Source: "{code:Descent}\*.eff:"; DestDir: "{app}\D1X-Rebirth\Players"; Components: "d1x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:Descent}\*.plr:"; DestDir: "{app}\D1X-Rebirth\Players"; Components: "d1x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:Descent}\*.plx:"; DestDir: "{app}\D1X-Rebirth\Players"; Components: "d1x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:Descent}\*.ngp:"; DestDir: "{app}\D1X-Rebirth\Players"; Components: "d1x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:Descent}\*.sg*:"; DestDir: "{app}\D1X-Rebirth\Players"; Components: "d1x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:Descent}\*.mg*:"; DestDir: "{app}\D1X-Rebirth\Players"; Components: "d1x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:Descent}\Players\*.eff:"; DestDir: "{app}\D1X-Rebirth\Players"; Components: "d1x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:Descent}\Players\*.plr:"; DestDir: "{app}\D1X-Rebirth\Players"; Components: "d1x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:Descent}\Players\*.plx:"; DestDir: "{app}\D1X-Rebirth\Players"; Components: "d1x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:Descent}\Players\*.ngp:"; DestDir: "{app}\D1X-Rebirth\Players"; Components: "d1x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:Descent}\Players\*.sg*:"; DestDir: "{app}\D1X-Rebirth\Players"; Components: "d1x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:Descent}\Players\*.mg*:"; DestDir: "{app}\D1X-Rebirth\Players"; Components: "d1x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
;D2X Files 
Source: "C:\Documents and Settings\Owner\Desktop\Downloads\d2x-rebirth_v0.57-win\d2x-rebirth_v0.57-win\d2x-rebirth.exe"; DestDir: "{app}\D2X-Rebirth"; Components: d2x; Flags: ignoreversion 
Source: "C:\Documents and Settings\Owner\Desktop\Downloads\d2x-rebirth_v0.57-win\d2x-rebirth_v0.57-win\*"; DestDir: "{app}\D2X-Rebirth"; Excludes: "C:\Documents and Settings\Owner\Desktop\Downloads\d2x-rebirth_v0.57-win\d2x-rebirth_v0.57-win\Missions,C:\Documents and Settings\Owner\Desktop\Downloads\d2x-rebirth_v0.57-win\d2x-rebirth_v0.57-win\Players,C:\Documents and Settings\Owner\Desktop\Downloads\d2x-rebirth_v0.57-win\d2x-rebirth_v0.57-win\Demos,C:\Documents and Settings\Owner\Desktop\Downloads\d2x-rebirth_v0.57-win\d2x-rebirth_v0.57-win\Screenshots"; Components: d2x; Flags: ignoreversion recursesubdirs createallsubdirs 
Source: "C:\Documents and Settings\Owner\Desktop\Downloads\d2x-rebirth_v0.57-win\d2x-rebirth_v0.57-win\Missions"; DestDir: "{app}\D2X-Rebirth"; Components: d2x; Flags: ignoreversion recursesubdirs createallsubdirs onlyifdoesntexist 
Source: "C:\Documents and Settings\Owner\Desktop\Downloads\d2x-rebirth_v0.57-win\d2x-rebirth_v0.57-win\Players"; DestDir: "{app}\D2X-Rebirth"; Components: d2x; Flags: ignoreversion recursesubdirs createallsubdirs onlyifdoesntexist 
Source: "C:\Documents and Settings\Owner\Desktop\Downloads\d2x-rebirth_v0.57-win\d2x-rebirth_v0.57-win\Demos"; DestDir: "{app}\D2X-Rebirth"; Components: d2x; Flags: ignoreversion recursesubdirs createallsubdirs onlyifdoesntexist 
Source: "C:\Documents and Settings\Owner\Desktop\Downloads\d2x-rebirth_v0.57-win\d2x-rebirth_v0.57-win\Screenshots"; DestDir: "{app}\D2X-Rebirth"; Components: d2x; Flags: ignoreversion recursesubdirs createallsubdirs onlyifdoesntexist 
;D2 Main Files 
Source: "{code:DescentTwo}\descent2.ham"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\descent2.hog"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\descent2.s11"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\descent2.s22"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\alien1.pig"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\alien2.pig"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\fire.pig"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\groupa.pig"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\ice.pig"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\water.pig"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\intro-h.mvl"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\intro-l.mvl"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\other-h.mvl"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\other-l.mvl"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\robots-h.mvl"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\robots-l.mvl"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
;Vertigo 
Source: "{code:DescentTwo}\d2x-h.mvl"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\d2x-l.mvl"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\hoard.ham"; DestDir: "{app}\D2X-Rebirth"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\d2x.hog"; DestDir: "{app}\D2X-Rebirth\Missions"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\d2x.mn2"; DestDir: "{app}\D2X-Rebirth\Missions"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\Missions\d2x.hog"; DestDir: "{app}\D2X-Rebirth\Missions"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\Missions\d2x.mn2"; DestDir: "{app}\D2X-Rebirth\Missions"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist 
;D2 Missions 
Source: "{code:DescentTwo}\*.hog"; DestDir: "{app}\D2X-Rebirth\Missions"; Components: "d2x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\*.mn2"; DestDir: "{app}\D2X-Rebirth\Missions"; Components: "d2x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\Missions\*"; DestDir: "{app}\D2X-Rebirth\Missions"; Components: "d2x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\descent2.hog"; DestDir: "{app}\D2X-Rebirth\Missions"; Components: "d2x"; Check: not DontInstall; Flags: external skipifsourcedoesntexist deleteafterinstall 
;D2 Players 
Source: "{code:DescentTwo}\*.eff:"; DestDir: "{app}\D2X-Rebirth\Players"; Components: "d2x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\*.plr:"; DestDir: "{app}\D2X-Rebirth\Players"; Components: "d2x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\*.plx:"; DestDir: "{app}\D2X-Rebirth\Players"; Components: "d2x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\*.ngp:"; DestDir: "{app}\D2X-Rebirth\Players"; Components: "d2x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\*.sg*:"; DestDir: "{app}\D2X-Rebirth\Players"; Components: "d2x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\*.mg*:"; DestDir: "{app}\D2X-Rebirth\Players"; Components: "d2x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\Players\*.eff:"; DestDir: "{app}\D2X-Rebirth\Players"; Components: "d2x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\Players\*.plr:"; DestDir: "{app}\D2X-Rebirth\Players"; Components: "d2x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\Players\*.plx:"; DestDir: "{app}\D2X-Rebirth\Players"; Components: "d2x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\Players\*.ngp:"; DestDir: "{app}\D2X-Rebirth\Players"; Components: "d2x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\Players\*.sg*:"; DestDir: "{app}\D2X-Rebirth\Players"; Components: "d2x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
Source: "{code:DescentTwo}\Players\*.mg*:"; DestDir: "{app}\D2X-Rebirth\Players"; Components: "d2x"; Check: InstallAll; Flags: external skipifsourcedoesntexist 
; NOTE: Don't use "Flags: ignoreversion" on any shared system files 

[Icons] 
Name: "{group}\{#MyAppName1}"; Filename: "{app}\D1X-Rebirth\{#MyAppExeName}" 
Name: "{group}\{#MyAppName2}"; Filename: "{app}\D2X-Rebirth\{#MyAppExeName2}" 
Name: "{group}\{cm:UninstallProgram,{#MyAppName}}"; Filename: "{uninstallexe}" 
Name: "{userdesktop}\{#MyAppName1}"; Filename: "{app}\D1X-Rebirth\{#MyAppExeName}"; Tasks: desktopicon 
Name: "{userdesktop}\{#MyAppName2}"; Filename: "{app}\D2X-Rebirth\{#MyAppExeName2}"; Tasks: desktopicon 
Name: "{userappdata}\Microsoft\Internet Explorer\Quick Launch\{#MyAppName1}"; Filename: "{app}\D1X-Rebirth\{#MyAppExeName}"; Tasks: quicklaunchicon 
Name: "{userappdata}\Microsoft\Internet Explorer\Quick Launch\{#MyAppName2}"; Filename: "{app}\D2X-Rebirth\{#MyAppExeName2}"; Tasks: quicklaunchicon 

[Run] 
Filename: "{app}\D1X-Rebirth\{#MyAppExeName}"; Description: "{cm:LaunchProgram,{#StringChange(MyAppName1, "&", "&&")}}"; Flags: nowait postinstall skipifsilent unchecked 
Filename: "{app}\D2X-Rebirth\{#MyAppExeName2}"; Description: "{cm:LaunchProgram,{#StringChange(MyAppName2, "&", "&&")}}"; Flags: nowait postinstall skipifsilent unchecked 

[UninstallDelete] 
Type: filesandordirs; Name: "{app}" 

[Code] 
// global vars 
var 
    SampleDataPage: TInputOptionWizardPage; 
    DataDirPage: TInputDirWizardPage; 

// custom wizard page setup, for data dir. 
procedure InitializeWizard; 
begin 
    { Taken from CodeDlg.iss example script } 
    { Create custom pages to show during install } 

    SampleDataPage := CreateInputOptionPage(wpSelectComponents, 
    'Install Descent Data', '', 
    'Would you like to copy the Descent game files to your DXX-Rebirth installation?', 
    True, False); 
    SampleDataPage.Add('Yes copy the game files, missions, players, and savegames.'); 
    SampleDataPage.Add('Yes, but just copy the game files.'); 
    SampleDataPage.Add('No, I'+chr(39)+'ll copy the game files myself later.'); 

    SampleDataPage.Values[0] := True; 

    DataDirPage := CreateInputDirPage(SampleDataPage.ID, 
    'Descent Data Directory', '', 
    'Please select the location where the original Descent files are installed.', 
    False, ''); 
end; 

function NextButtonClick(CurPageID: Integer): Boolean; 
begin 
    if CurPageID = SampleDataPage.ID then 
    begin 
    if (IsComponentSelected('d1x') = true) and (IsComponentSelected('d2x') = true) then 
    begin 
     DataDirPage.Add('Descent location.'); 
     DataDirPage.Add('Decent 2 location.'); 
     DataDirPage.Values[0] := ExpandConstant('{pf}\GOG.com\Descent and Descent 2\Descent'); 
     DataDirPage.Values[1] := ExpandConstant('{pf}\GOG.com\Descent and Descent 2\Descent 2'); 
     result := true; 
     exit; 
    end; 
    if (IsComponentSelected('d1x') = true) and (IsComponentSelected('d2x') = false) then 
    begin 
     DataDirPage.Add('Descent location.'); 
     DataDirPage.Values[0] := ExpandConstant('{pf}\GOG.com\Descent and Descent 2\Descent'); 
     result := true; 
     exit; 
    end; 
    if (IsComponentSelected('d1x') = false) and (IsComponentSelected('d2x') = true) then 
    begin 
     DataDirPage.Add('Decent 2 location.'); 
     DataDirPage.Values[0] := ExpandConstant('{pf}\GOG.com\Descent and Descent 2\Descent 2'); 
     result := true; 
     exit; 
    end; 
    result := true; 
    end 
    else 
    begin 
    result := true; 
    end; 
end; 

function BackButtonClick(CurPageID: Integer): Boolean; 
begin 
    if CurPageID = SampleDataPage.ID then 
    begin 
    result := true; 
    end 
    else 
    result := true; 
    end; 
end; 


function ShouldSkipPage(PageID: Integer): Boolean; 
begin 
    if (PageID = DataDirPage.ID) and (SampleDataPage.Values[2] = true) then 
    Result := True 
    else 
    Result := False; 
end; 

function InstallAll(): Boolean; 
begin 
    { Return the value of the 'install' radiobutton } 
    //MsgBox('InstallSampleData.', mbError, MB_OK); 
    Result := SampleDataPage.Values[0]; 
end; 

function Install(): Boolean; 
begin 
    { Return the value of the 'install' radiobutton } 
    //MsgBox('InstallSampleData.', mbError, MB_OK); 
    Result := SampleDataPage.Values[1]; 
end; 

function DontInstall(): Boolean; 
begin 
    Result := SampleDataPage.Values[2]; 
end; 

function DescentTwo(Param: String): String; 
begin 
if Assigned(DataDirPage) then 
    begin 
    if (IsComponentSelected('d1x') = true) and (IsComponentSelected('d2x') = true) then 
    begin 
     result := DataDirPage.Values[1]; 
    end; 
    if (IsComponentSelected('d1x') = false) and (IsComponentSelected('d2x') = true) then 
    begin 
     result := DataDirPage.Values[0]; 
    end; 
    if (IsComponentSelected('d1x') = true) and (IsComponentSelected('d2x') = false) then 
    begin 
     result := ''; 
    end; 
    end 
else 
result := ''; 
end; 

function Descent(Param: String): String; 
begin 
if Assigned(DataDirPage) then 
    begin 
    if (IsComponentSelected('d1x') = false) and (IsComponentSelected('d2x') = true) then 
    begin 
    result := ''; 
    end 
    else 
    begin 
     result := DataDirPage.Values[0]; 
    end; 
    end 
    else 
    result := ''; 
    end; 
end.

来源

2011-07-07 Mako

当你使用CreateInputDirPage（），该网页是一个TInputDirWizardPage。当您调用.Add（）时，它会返回一个索引，您可以使用该索引与页面的.Buttons [index]，.Edits [index]和.PromptLabels [index]属性直接访问控件本身。

这就允许您设置。可见或.Enabled直接：

 
DataDirPage.PromptLabels[IndexToDisable].Enabled := false; 
DataDirPage.Edits[IndexToDisable].Enabled := false; 
DataDirPage.Buttons[IndexToDisable].Enabled := false;

远更好的选择，但如果有更多的差异是有两页，就跳过一个或另一个在ShouldSkipPage（）事件函数。

来源

2011-07-07 11:00:55 Deanna

我该如何隐藏和禁用它们？这是什么财产？谢谢！ – Mako

我认为这样做的另一种方式是在用户返回时真正销毁页面，并在他再次前进时重新创建页面。这可能吗？ – Mako

您不能轻易销毁最近版本的Inno中的页面。 – Deanna

如何删除自定义向导输入栏inno安装程序？

回答

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