將「打印協議」按鈕添加到Inno Setup中的許可證頁面

Question

我需要幫助才能在Inno Setup窗體上放置按鈕（打印協議）以通過打印機打印EULA。

在安裝過程中，當用戶協議頁面顯示時，有3個按鈕（上一個，下一個和取消）。我想添加一個按鈕打印，以便用戶可以打印EULA文檔。有什麼辦法可以做到嗎？

Answer 1

下面是我放在一起的一個簡單腳本，它在許可證屏幕上顯示一個打印按鈕，然後打開帶有可打印許可證文件的記事本。
ShellExec可以更改爲「打印」謂詞（以代碼顯示但已註釋掉），以便它可以自動打印到默認打印機。這並沒有考慮到沒有安裝打印機的系統。代碼是：

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

#define MyAppName "My Program" 
#define MyAppVersion "1.5" 
#define MyAppPublisher "My Company, Inc." 
#define MyAppURL "http://www.example.com/" 
#define MyAppExeName "MyProg.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={{19ECF086-08A1-4A60-891F-E4D57E1266CF} 
AppName={#MyAppName} 
AppVersion={#MyAppVersion} 
;AppVerName={#MyAppName} {#MyAppVersion} 
AppPublisher={#MyAppPublisher} 
AppPublisherURL={#MyAppURL} 
AppSupportURL={#MyAppURL} 
AppUpdatesURL={#MyAppURL} 
DefaultDirName={pf}\{#MyAppName} 
DefaultGroupName={#MyAppName} 
OutputBaseFilename=setup 
Compression=lzma 
SolidCompression=yes 
LicenseFile=c:\license.txt 

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

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

[Files] 
Source: "C:\util\innosetup\Examples\MyProg.exe"; DestDir: "{app}"; Flags: ignoreversion 
Source: "c:\license.txt"; DestDir: "{tmp}"; Flags: dontcopy 
; NOTE: Don't use "Flags: ignoreversion" on any shared system files 

[Icons] 
Name: "{group}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}" 
Name: "{commondesktop}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}"; Tasks: desktopicon 


[Run] 
Filename: "{app}\{#MyAppExeName}"; Description: "{cm:LaunchProgram,{#StringChange(MyAppName, "&", "&&")}}"; Flags: nowait postinstall skipifsilent 

[code] 
var PrintButton: TButton; 

procedure PrintButtonClick(Sender: TObject); 
var ResultCode :integer; 
begin 
log('test'); 
ExtractTemporaryFile('license.txt'); 
//if not ShellExec('Print', ExpandConstant('{tmp}\license.txt'), 
//  '', '', SW_SHOW, ewNoWait, ResultCode) then 
if not ShellExec('', ExpandConstant('{tmp}\license.txt'), 
    '', '', SW_SHOW, ewNoWait, ResultCode) then 
log('test'); 
end; 

procedure InitializeWizard(); 
begin 
    PrintButton := TButton.Create(WizardForm); 
    PrintButton.Caption := '&Print...'; 
    PrintButton.Left := WizardForm.InfoAfterPage.Left + 96; 
    PrintButton.Top := WizardForm.InfoAfterPage.Height + 88; 
    PrintButton.OnClick := @PrintButtonClick; 
    PrintButton.Parent := WizardForm.NextButton.Parent; 
end; 

procedure CurPageChanged(CurPage: Integer); 

begin 
    PrintButton.Visible := CurPage = wpLicense; 
end;