Use WizardStyle=modern in the examples.

Examples/64Bit.iss

@@ -9,6 +9,7 @@
 [Setup]
 AppName=My Program
 AppVersion=1.5
+WizardStyle=modern
 DefaultDirName={autopf}\My Program
 DefaultGroupName=My Program
 UninstallDisplayIcon={app}\MyProg.exe

Examples/64BitThreeArch.iss

@@ -7,6 +7,7 @@
 [Setup]
 AppName=My Program
 AppVersion=1.5
+WizardStyle=modern
 DefaultDirName={autopf}\My Program
 DefaultGroupName=My Program
 UninstallDisplayIcon={app}\MyProg.exe

Examples/64BitTwoArch.iss

@@ -13,6 +13,7 @@ AppVersion=1.5
 DefaultDirName={autopf}\My Program
 DefaultGroupName=My Program
 UninstallDisplayIcon={app}\MyProg.exe
+WizardStyle=modern
 Compression=lzma2
 SolidCompression=yes
 OutputDir=userdocs:Inno Setup Examples Output

Examples/CodeAutomation.iss

@@ -5,6 +5,7 @@
 [Setup]
 AppName=My Program
 AppVersion=1.5
+WizardStyle=modern
 DisableWelcomePage=no
 CreateAppDir=no
 DisableProgramGroupPage=yes

Examples/CodeAutomation2.iss

@@ -10,6 +10,7 @@
 [Setup]
 AppName=My Program
 AppVersion=1.5
+WizardStyle=modern
 DisableWelcomePage=no
 CreateAppDir=no
 DisableProgramGroupPage=yes

Examples/CodeClasses.iss

@@ -5,6 +5,7 @@
 [Setup]
 AppName=My Program
 AppVersion=1.5
+WizardStyle=modern
 CreateAppDir=no
 DisableProgramGroupPage=yes
 DefaultGroupName=My Program

Examples/CodeDlg.iss

@@ -8,6 +8,7 @@
 [Setup]
 AppName=My Program
 AppVersion=1.5
+WizardStyle=modern
 DisableWelcomePage=no
 DefaultDirName={autopf}\My Program
 DisableProgramGroupPage=yes

Examples/CodeDll.iss

@@ -7,6 +7,7 @@
 [Setup]
 AppName=My Program
 AppVersion=1.5
+WizardStyle=modern
 DefaultDirName={autopf}\My Program
 DisableProgramGroupPage=yes
 UninstallDisplayIcon={app}\MyProg.exe

Examples/CodeExample1.iss

@@ -5,6 +5,7 @@
 [Setup]
 AppName=My Program
 AppVersion=1.5
+WizardStyle=modern
 DisableWelcomePage=no
 DefaultDirName={code:MyConst}\My Program
 DefaultGroupName=My Program

Examples/CodePrepareToInstall.iss

@@ -7,6 +7,7 @@
 [Setup]
 AppName=My Program
 AppVersion=1.5
+WizardStyle=modern
 DefaultDirName={autopf}\My Program
 DefaultGroupName=My Program
 UninstallDisplayIcon={app}\MyProg.exe

Examples/Components.iss

@@ -6,6 +6,7 @@
 [Setup]
 AppName=My Program
 AppVersion=1.5
+WizardStyle=modern
 DefaultDirName={autopf}\My Program
 DefaultGroupName=My Program
 UninstallDisplayIcon={app}\MyProg.exe

Examples/Example1.iss

@@ -6,6 +6,7 @@
 [Setup]
 AppName=My Program
 AppVersion=1.5
+WizardStyle=modern
 DefaultDirName={autopf}\My Program
 DefaultGroupName=My Program
 UninstallDisplayIcon={app}\MyProg.exe

Examples/Example2.iss

@@ -7,6 +7,7 @@
 [Setup]
 AppName=My Program
 AppVersion=1.5
+WizardStyle=modern
 DefaultDirName={autopf}\My Program
 ; Since no icons will be created in "{group}", we don't need the wizard
 ; to ask for a Start Menu folder name:

Examples/Example3.iss

@@ -7,6 +7,7 @@
 [Setup]
 AppName=My Program
 AppVersion=1.5
+WizardStyle=modern
 DefaultDirName={autopf}\My Program
 DefaultGroupName=My Program
 UninstallDisplayIcon={app}\MyProg.exe

Examples/ISPPExample1.iss

@@ -21,6 +21,7 @@
 [Setup]
 AppName={#AppName}
 AppVersion={#AppVersion}
+WizardStyle=modern
 DefaultDirName={autopf}\{#AppName}
 DefaultGroupName={#AppName}
 UninstallDisplayIcon={app}\MyProg.exe

Examples/Languages.iss

@@ -7,6 +7,7 @@
 AppName={cm:MyAppName}
 AppId=My Program
 AppVerName={cm:MyAppVerName,1.5}
+WizardStyle=modern
 DefaultDirName={autopf}\{cm:MyAppName}
 DefaultGroupName={cm:MyAppName}
 UninstallDisplayIcon={app}\MyProg.exe

Examples/UnicodeExample1.iss

@@ -6,6 +6,7 @@
 [Setup]
 AppName=ɯɐɹƃoɹd ʎɯ
 AppVerName=ɯɐɹƃoɹd ʎɯ version 1.5
+WizardStyle=modern
 DefaultDirName={autopf}\ɯɐɹƃoɹd ʎɯ
 DefaultGroupName=ɯɐɹƃoɹd ʎɯ
 UninstallDisplayIcon={app}\ƃoɹdʎɯ.exe

Examples/UninstallCodeExample1.iss

@@ -5,6 +5,7 @@
 [Setup]
 AppName=My Program
 AppVersion=1.5
+WizardStyle=modern
 DefaultDirName={autopf}\My Program
 DefaultGroupName=My Program
 UninstallDisplayIcon={app}\MyProg.exe

setup.iss

@@ -16,6 +16,7 @@ AppUpdatesURL=http://www.innosetup.com/
 VersionInfoCopyright=Copyright (C) 1997-2018 Jordan Russell. Portions Copyright (C) 2000-2018 Martijn Laan.
 AppMutex=InnoSetupCompilerAppMutex,Global\InnoSetupCompilerAppMutex
 SetupMutex=InnoSetupCompilerSetupMutex,Global\InnoSetupCompilerSetupMutex
+WizardStyle=modern
 DefaultDirName={autopf}\Inno Setup 6
 DefaultGroupName=Inno Setup 6
 PrivilegesRequiredOverridesAllowed=dialog