inno-installers/JT2GO

JT2GO Installer

Automated installer for Siemens JT2Go 2512 with prerequisite checking and silent installation support.

Overview

JT2Go is a free 3D CAD viewer for viewing JT, PDF, and other CAD formats. This installer automates the installation process by:

1. Checking for required prerequisites
2. Installing missing components automatically
3. Running the main JT2Go installer

Prerequisites Checked

Component	Detection Method	Installer
Visual C++ 2015-2022 x86	Registry check	VC_redist.x86.exe
Visual C++ 2015-2022 x64	Registry check	VC_redist.x64.exe
.NET Framework 4.8	Registry (Release >= 528040)	NDP48-x86-x64-AllOS-ENU.exe

Files Required

JT2GO/
├── JT2GO.iss              # Inno Setup script
├── JT2GoSetup.exe         # Main JT2Go installer (not in git)
├── VC_redist.x86.exe      # Visual C++ x86 (not in git)
├── VC_redist.x64.exe      # Visual C++ x64 (not in git)
├── NDP48-x86-x64-AllOS-ENU.exe  # .NET 4.8 (not in git)
├── CustomInstall.bat      # Helper batch file
├── gea-logo.ico           # Setup icon
├── patrick.bmp            # Wizard banner (164x314)
└── patrick-sm.bmp         # Wizard small image (55x58)

Usage

Interactive Installation

1. Compile JT2GO.iss with Inno Setup Compiler
2. Run the generated JT2GOSetup.exe
3. The installer will:
   • Display detected/missing prerequisites
   • Ask for confirmation to install missing components
   • Install prerequisites silently
   • Launch JT2Go installer

Silent Installation

JT2GOSetup.exe /VERYSILENT /SUPPRESSMSGBOXES

With logging:

JT2GOSetup.exe /VERYSILENT /SUPPRESSMSGBOXES /LOG="C:\install.log"

How It Works

Prerequisite Detection

Visual C++ Redistributables:

HKLM\SOFTWARE\Microsoft\VisualStudio\14.0\VC\Runtimes\x64
HKLM\SOFTWARE\Microsoft\VisualStudio\14.0\VC\Runtimes\x86

.NET Framework 4.8:

HKLM\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full
Release value >= 528040

Installation Flow

1. InitializeSetup - Verify admin privileges
2. Prerequisite Check - Scan registry for installed components
3. Display Summary - Show what will be installed
4. Install Prerequisites - Run installers silently (/quiet /norestart)
5. Handle Reboot - If .NET requires reboot, notify user
6. Install JT2Go - Run main installer (/L1033 /S /v"/qn /norestart")

Customization

Adding More Prerequisites

Edit the [Code] section in JT2GO.iss:

function IsMyComponentInstalled: Boolean;
begin
  // Add your registry check here
  Result := RegKeyExists(HKLM, 'SOFTWARE\YourComponent');
end;

Changing JT2Go Version

Update the installer filename and parameters in the script:

JT2GoInstaller := ExpandConstant('{src}\JT2GoSetup.exe');
JT2GoParams := '/L1033 /S /v"/qn /norestart"';

Troubleshooting

"Requires administrator privileges"

Right-click the installer and select "Run as administrator"

Prerequisites install but JT2Go fails

Check if JT2Go requires additional components not covered by this installer

Silent install shows dialogs

The /qn flag ensures fully silent MSI installation. If dialogs appear, the MSI parameters may need adjustment.

Building

1. Install Inno Setup 6.x
2. Download required installers to the JT2GO folder
3. Open JT2GO.iss in Inno Setup Compiler
4. Click Build > Compile (or press F9)
5. Output: Output/JT2GOSetup.exe

Author

WJDT / GE Aerospace