Qr Code In Vb6 Site

Title: The Enduring Utility of QR Codes in Visual Basic 6.0: A Technical Implementation Guide

Introduction

In the landscape of software development, few technologies have bridged the gap between the physical and digital worlds as effectively as the Quick Response (QR) code. Originally designed for the automotive industry in 1994, the QR code has become ubiquitous in modern life, used for everything from payment processing to inventory management. However, the rise of this technology predates the modern, managed-code environments of .NET and Java. Despite its age, Visual Basic 6.0 (VB6) remains a stalwart in many legacy enterprise systems, particularly in manufacturing and logistics.

Integrating modern QR code generation into a legacy VB6 application presents a unique set of challenges and opportunities. While VB6 lacks the extensive libraries found in contemporary languages, its robust support for COM (Component Object Model) and ActiveX controls allows developers to seamlessly implement QR functionality. This essay explores the technical mechanisms for generating QR codes in VB6, comparing the available methodologies and outlining best practices for implementation.

The Challenge of Native Generation

VB6, released in 1998, was designed in an era before 2D barcodes became standard. The language possesses native commands for linear (1D) barcode generation—such as Code 39 or Code 128—because these can be rendered using simple lines and text manipulation. However, QR codes are matrix barcodes (2D) based on complex algebraic geometry, specifically Reed-Solomon error correction.

Writing a pure VB6 algorithm to calculate the Reed-Solomon error correction codes and map the data modules is theoretically possible but practically inefficient. It would result in hundreds of lines of complex mathematical code within a .bas module, prone to errors and difficult to maintain. Therefore, the industry standard approach for VB6 development involves utilizing external libraries or components to handle the heavy lifting.

Method 1: The ActiveX/COM Component Approach

The most traditional and "VB6-native" method for generating QR codes is through the use of ActiveX controls (OCX) or COM DLLs. These are pre-compiled libraries, often written in C++, that expose objects and methods accessible to the VB6 IDE.

In this model, the developer adds a reference to the library (e.g., a "QRGenerator.dll") via the Project > References menu. The code typically involves instantiating an object and calling a generation method:

Dim qrGenerator As Object
Set qrGenerator = CreateObject("QRCodeLib.Generator")
' Generate the QR code image file
qrGenerator.GenerateFile "https://example.com", "C:\temp\qrcode.bmp"
' Alternatively, returning a binary stream for direct display
Dim picData As stdole.StdPicture
Set picData = qrGenerator.GeneratePicture("Sample Data")
Set Image1.Picture = picData

This approach offers high performance because the generation logic runs in compiled machine code rather than interpreted VB6 code. It also often provides access to advanced features like setting the error correction level (L, M, Q, H), defining module sizes, and customizing colors.

Method 2: The .NET Interop Approach

As the VB6 ecosystem has aged, many commercial ActiveX vendors have ceased updates. A modern alternative involves leveraging the Interop Forms Toolkit or the Regasm utility to bridge VB6 with the .NET Framework.

In this scenario, a developer creates a small class library in C# or VB.NET using open-source libraries like QRCoder (available via NuGet). This .NET assembly is then compiled with the "Register for COM Interop" option. VB6 can then call this .NET component as if it were a native COM object. This method allows legacy applications to utilize state-of-the-art generation algorithms while maintaining the stability of the legacy VB6 front end.

Method 3: Command Line Execution

For simple reporting or batch processing needs, VB6 can utilize the Shell command to execute a command-line utility. There are numerous lightweight executables available that accept a string parameter and output an image file.

Dim TaskID As Double
' Execute a console app to generate the image
TaskID = Shell("C:\Tools\qrgen.exe -o output.png -t ""Hello World""", vbHide)

While simple, this method introduces latency (process start-up time) and file I/O overhead, making it less suitable for real-time applications where dozens of codes must be generated per second.

Displaying the Result

Once the data is generated, the VB6 developer faces the task of rendering the image. If the library returns a stdPicture object, it can be directly assigned to a PictureBox or Image control. However, some libraries return a raw binary bitmap handle (hBmp) or a byte array.

In cases where raw bitmap data is returned, VB6’s API capabilities are required. Using GDI (Graphics Device Interface) API calls such as CreateCompatibleDC, SelectObject, and BitBlt, a developer can draw the QR code pixels directly onto a form or a picture box. This is particularly common when using older C++ DLLs that were not designed specifically for the VB6 container model.

Use Cases in the Legacy Sector

Why do developers continue to implement QR codes in a language over two decades old? The answer lies in the specific domain of "brownfield" software. Many Warehouse Management Systems (WMS) and Manufacturing Execution Systems (MES) were built in VB6.

As supply chains evolve, these systems must print QR codes for shipping labels and inventory tracking to comply with modern standards (e.g., GS1 QR codes). Rather than rewriting the entire application stack—a costly and risky endeavor—developers extend the existing VB6 application with QR capabilities. This allows a factory running Windows XP or Windows 7 embedded machines to generate modern 2D barcodes without a complete hardware or software overhaul.

Conclusion

Implementing QR code technology in Visual Basic 6.0 is a testament to the language’s adaptability and the foresight of its COM-based architecture. While VB6 cannot natively compute the complex mathematics of QR encoding efficiently, its ability to interface with external components allows it to bridge the technological gap. Whether through classic ActiveX controls, .NET interoperability, or shell execution, developers can successfully equip legacy applications with modern data capture capabilities. This ensures that the substantial investment in existing VB6 codebases remains viable and functional in a modern, mobile-first operational environment.

Implementing QR code functionality in Visual Basic 6.0 (VB6) typically requires using third-party libraries, ActiveX controls, or REST APIs, as the language lacks native modern barcode support. Top Library Options

Developers generally choose between lightweight open-source modules and robust commercial SDKs: VbQRCodegen (Open Source) : A popular, native VB6/VBA library available on GitHub (wqweto)

: No external dependencies; returns a vector picture that can be zoomed without quality loss. mdQRCodegen.bas to your project and call Set Image1.Picture = QRCodegenBarcode("Your Text") ByteScout QR Code SDK (Commercial)

: A comprehensive SDK that simplifies complex tasks like embedding logos or branding within the QR code.

: Supports high error correction levels (up to Level 3/High) and specialized data like contact cards or URLs. : Uses a simple COM interface: Set barcode = CreateObject("Bytescout.BarCode.QRCode") Chilkat API / REST API Integration

: For those who prefer not to manage local libraries, you can use a REST API like qrserver.com via an HTTP request.

: Offloads processing to a server; supports multiple formats (PNG, SVG, JPG). : Requires an active internet connection. Key Technical Considerations Vector vs. Raster

: Native vector solutions (like VbQRCodegen) are better for high-quality printing because they don't pixelate when resized. Error Correction

: Higher correction levels (e.g., Level 3) allow the code to remain readable even if up to 30% is damaged or covered by a logo.

: For reliable scanning, ensure a contrast of at least 55% between the foreground and background colors. Comparison Table: VB6 QR Solutions Key Feature VbQRCodegen Open Source Vector Output High-res printing/Scaling ByteScout SDK Commercial Logo Embedding Professional branding No local DLLs Simple web-connected apps source code example for one of these methods to get started? QR Code Advantages and Limitations - ByteScout qr code in vb6

It was 2:00 AM in the server room, the air conditioning humming a monotonous drone that matched the headache throbbing behind Elias’s eyes. On the screen before him, glowing like a ghost from a byotten era, was the IDE for Visual Basic 6. The color scheme was classic gray—the "metallic" interface of 1998.

Elias was a modern developer. He knew React, Node.js, Python. But the payroll system for Hyperion Logistics was written in VB6, and the only man who understood it had retired to a boat in Florida five years ago. Elias was the "lucky" one assigned to keep the dinosaur alive.

"Request coming down from upper management," the email had read. "We need to integrate 2D barcode scanning for inventory tracking. The handheld scanners can read them, but the software needs to generate them. Specifically, QR codes."

Elias stared at the "Form1" window. He had drag-and-dropped a button named cmdGenerate and a PictureBox named picQR.

"Okay," he whispered, his voice cracking in the silence. "How do you teach a dinosaur to speak modern language?"

His first instinct was to write the QR generation algorithm himself. He pulled up the ISO/IEC 18004 specification. He read about Reed-Solomon error correction, masking patterns, and finder patterns.

He tried to code it in a VB6 module. Dim x As Integer Dim y As Integer Dim module(0 To 40) As Boolean

Thirty minutes later, he was staring at a black square that looked like a Rorschach test rather than a scannable code. "Math is math," he muttered, deleting the botched attempt. "But VB6 has the arithmetic precision of a sledgehammer."

He needed a library. A DLL. In the modern world, you just typed npm install qrcode. In 1998, you had to find a cavalry.

He spun his chair around to the dusty "Legacy Archive" server share. He navigated through folders named Windows95_Drivers and Y2K_Patch_Files. Finally, he found a ZIP file from a defunct forum post from 2004: QRGeneratorWrapper.zip.

Inside was a single file: QRCodeGen.dll.

"Please be registered," Elias prayed. He opened the command prompt as Administrator. regsvr32 C:\Temp\QRCodeGen.dll

A cheerful little dialog box popped up: DllRegisterServer in QRCodeGen.dll succeeded.

Elias actually smiled. "Classic COM."

He switched back to the VB6 IDE. He went to Project > References. A list of available libraries populated. He scrolled down past "Excel 8.0 Object Library" and "Word 8.0 Object Library," praying to the coding gods.

There it was: QR Code Generator 1.0 Type Library. He checked the box and clicked OK.

Now, the code.

He double-clicked cmdGenerate.

Private Sub cmdGenerate_Click() Dim sData As String Dim oQR As QRCodeGen.QRCode ' The data to encode sData = txtInventoryID.Text ' Create the object Set oQR = New QRCodeGen.QRCode ' Generate the image oQR.Generate sData, picQR.ScaleWidth, picQR.ScaleHeight ' The library returns a handle to a bitmap (hBmp) picQR.Picture = oQR.Image End Sub

He paused. It felt too easy. He typed txtInventoryID.Text = "HYPERION-998877". He pressed F5 to compile and run.

The form appeared. It looked ancient—flat buttons, beveled edges, MS Sans Serif font. But it was functional.

He clicked Generate.

The hard drive churned—a physical grinding sound modern SSDs couldn

Generating and Reading QR Codes in VB6: A Comprehensive Guide

QR codes have become an essential part of modern technology, used in various industries such as marketing, healthcare, and finance. These two-dimensional barcodes can store a significant amount of data, making them a popular choice for encoding information. In this article, we will explore how to generate and read QR codes in VB6, a popular programming language still widely used today.

Introduction to QR Codes

QR codes, or Quick Response codes, were invented in the 1990s by Masahiro Hara, an engineer at Denso Wave. They are designed to store data in a matrix of black and white squares, which can be read by a QR code reader or a smartphone camera. QR codes can store various types of data, including text, URLs, contact information, and more.

Why Use QR Codes in VB6?

VB6, or Visual Basic 6, is a legacy programming language that is still widely used today, especially in industries that rely on older systems. While it may not be the most modern language, VB6 is still capable of generating and reading QR codes, making it a valuable skill for developers working with legacy systems.

Generating QR Codes in VB6

To generate QR codes in VB6, you will need to use a third-party library or component. There are several options available, including:

QR Code Generator ActiveX Control: This is a popular and widely used ActiveX control that can be used to generate QR codes in VB6. It supports various QR code versions and error correction levels.
ZXing: ZXing is an open-source barcode scanning library that can also be used to generate QR codes. It has a VB6 wrapper that makes it easy to use in your applications.

In this article, we will use the QR Code Generator ActiveX Control to generate QR codes in VB6.

Step-by-Step Guide to Generating QR Codes in VB6

Download and Register the QR Code Generator ActiveX Control: Download the QR Code Generator ActiveX Control and register it on your system.
Add the Control to Your VB6 Project: Open your VB6 project and add the QR Code Generator ActiveX Control to your toolbox.
Drag and Drop the Control: Drag and drop the control onto your form.
Configure the Control: Configure the control by setting the QRCodeText property to the text you want to encode, and the QRCodeVersion property to the desired QR code version.
Generate the QR Code: Call the GenerateQRCode method to generate the QR code.

Here is some sample code to get you started: Title: The Enduring Utility of QR Codes in Visual Basic 6

Private Sub Command1_Click()
    ' Create a new instance of the QR Code Generator ActiveX Control
    Dim qrCode As New QRCodeLib.QRCode
' Set the QR code text and version
    qrCode.QRCodeText = "https://www.example.com"
    qrCode.QRCodeVersion = 1
' Generate the QR code
    qrCode.GenerateQRCode
' Save the QR code to a file
    qrCode.SaveQRCode "c:\qr_code.png"
End Sub

Reading QR Codes in VB6

To read QR codes in VB6, you will need to use a third-party library or component that can access the camera or a QR code reader device. Some popular options include:

ZXing: ZXing has a VB6 wrapper that can be used to read QR codes.
Scandit: Scandit is a barcode scanning library that supports QR code reading.

In this article, we will use ZXing to read QR codes in VB6.

Step-by-Step Guide to Reading QR Codes in VB6

Download and Install ZXing: Download and install ZXing on your system.
Add the ZXing Library to Your VB6 Project: Add the ZXing library to your VB6 project.
Create a New Instance of the ZXing Reader: Create a new instance of the ZXing reader.
Configure the Reader: Configure the reader by setting the CameraIndex property to the desired camera.
Read the QR Code: Call the ReadQRCode method to read the QR code.

Here is some sample code to get you started:

Private Sub Command1_Click()
    ' Create a new instance of the ZXing reader
    Dim reader As New ZXing.ZXingReader
' Set the camera index
    reader.CameraIndex = 0
' Read the QR code
    Dim result As ZXing.ZXingResult
    result = reader.ReadQRCode
' Check if a QR code was read
    If result Is Nothing Then
        MsgBox "No QR code found"
    Else
        MsgBox "QR code text: " & result.Text
    End If
End Sub

Conclusion

In this article, we have explored how to generate and read QR codes in VB6 using third-party libraries and components. While VB6 may not be the most modern language, it is still capable of working with QR codes, making it a valuable skill for developers working with legacy systems.

Example Use Cases

QR codes can be used in various industries and applications, including:

Marketing: Use QR codes to encode URLs, promotional messages, or contact information.
Healthcare: Use QR codes to encode patient information, medical records, or medication instructions.
Finance: Use QR codes to encode payment information, account numbers, or transaction details.

Best Practices

When working with QR codes in VB6, keep in mind the following best practices:

Use a reliable and compatible library or component: Choose a well-tested and widely used library or component to ensure compatibility and reliability.
Test thoroughly: Test your QR code generation and reading code thoroughly to ensure it works as expected.
Follow QR code standards: Follow QR code standards and guidelines to ensure your QR codes are readable and compatible with various devices and platforms.

By following these guidelines and best practices, you can successfully generate and read QR codes in VB6, expanding the capabilities of your legacy applications.

In the late 1990s, when Visual Basic 6.0 was the king of rapid application development, the digital world was far simpler. Modern luxuries like QR codes—those blocky, robotic-looking squares—were still largely confined to Japanese automotive factories. This is the story of how an aging VB6 application meets the modern web. The Problem: A Legacy Gap Imagine a developer named

. He manages a massive, 20-year-old inventory system written in VB6. His company suddenly needs to print QR codes on shipping labels so workers can scan them with smartphones. VB6, born in 1998, has no built-in "GenerateQR" function. Arthur has three paths: the SDK, the API, or the Native Library. Path 1: The Modern SDK (The ByteScout Way)

first tries a professional route using a specialized SDK like ByteScout QR Code SDK. The Setup: He registers a .dll on his Windows machine.

The Code: He writes a few lines of code to set the Symbology to 16 (the magic number for QR Codes).

The Result: The system spits out a crisp .png file. It’s reliable, but it requires installing extra software on every machine in the warehouse. Path 2: The Cloud Bridge (The API Route)

Next, Arthur considers the "lazy" (and often smartest) method: let someone else do the math. Using a tool like Chilkat or simple WinHTTP calls, he sends a request to a web service like api.qrserver.com.

The Workflow: His VB6 app sends a URL-encoded string to the web.

The Delivery: The server sends back the raw binary data of an image.

The Catch: If the warehouse Wi-Fi goes down, shipping stops. For Arthur, this is a deal-breaker. Path 3: The Pure Code Hero (The Native Library)

Finally, Arthur finds a hidden gem: a native VB6 module like VbQRCodegen. This is a single .bas file—a masterpiece of retro-engineering that handles the complex Reed-Solomon error correction and matrix masking entirely within VB6 logic.

The Implementation: He drops mdQRCodegen.bas into his project.

The Magic Line: Set Image1.Picture = QRCodegenBarcode("Order#12345").

The Victory: Because it's native code, it’s fast, requires no external dependencies, and works offline. The Resolution

Arthur chooses the native library. He updates the old "Print Label" form, and suddenly, the gray, rectangular buttons of 1998 are generating 21st-century symbols. The old app lives to fight another decade, proving that even in the world of VB6, you can always teach an old dog new digital tricks.

Visual Basic 6.0 (VB6) may be a legacy environment, but its ability to integrate with modern data formats like QR codes remains a common requirement for industrial, retail, and logistical applications.

To generate a QR code in VB6, you typically have three main implementation paths: using a pure VB6 library (no dependencies), leveraging a web API, or using a third-party ActiveX/OCX control. 1. Pure VB6 Implementation (No Dependencies)

The most robust and portable way to handle QR codes in VB6 is through a "class" or "module" that implements the QR generation logic entirely in native code. This eliminates the need for registering external DLLs or requiring an internet connection.

VbQRCodegen: An excellent open-source choice is the VbQRCodegen library on GitHub. It is based on the highly-regarded Nayuki QR library and is distributed as a single .bas module.

How it works: You simply add mdQRCodegen.bas to your project. You can then call the QRCodegenBarcode function, which returns a vector-based StdPicture object. This allows you to scale the QR code to any size without losing quality. Example Code:

' In a form with an Image control named Image1 Set Image1.Picture = QRCodegenBarcode("https://example.com") Use code with caution. 2. Using Web APIs (Fastest Setup)

If your application will always have internet access, using a REST API is the simplest method. This offloads the complex math of QR generation to a remote server.

Google Charts API: Although officially deprecated, it remains widely used for simple tasks. You can download the image using a simple HTTP request. Example URL: https://googleapis.com. This approach offers high performance because the generation

Implementation: You can use the Chilkat VB6 API Examples to send a GET request to an endpoint like api.qrserver.com and save the resulting PNG or display it in a PictureBox. 3. Commercial ActiveX / OCX Controls

For enterprise environments that require dedicated support or advanced features (like adding logos or specific error correction levels), ActiveX controls are a standard choice. GitHubhttps://github.com wqweto/VbQRCodegen: QR Code generator library for VB6/VBA

Generating QR codes in Visual Basic 6.0 (VB6) is typically achieved through three main technical paths: using pure native code libraries, integrating specialized ActiveX/OCX components, or calling external web APIs. 1. Native VB6 Libraries (No Dependencies)

For developers who prefer to avoid external DLLs or registration issues, native libraries implemented directly in .bas modules are the most robust choice.

VbQRCodegen (by wqweto): A widely recommended single-file library (mdQRCodegen.bas) that requires no external dependencies.

Usage: Add the module to your project and call QRCodegenBarcode to generate a vector-based StdPicture.

Key Advantage: It produces high-quality, zoomable vector images (EMF/WMF) that do not lose quality when resized.

vbQRCode (by Luigi Micco): Another native library that supports various encoding modes including BIN, ALPHA, and NUMERIC without using third-party software or ActiveX. 2. ActiveX and OCX Components

ActiveX controls allow you to drag and drop a QR code generator directly onto a VB6 form. wqweto/VbQRCodegen: QR Code generator library for VB6/VBA

In Visual Basic 6.0 (VB6), generating QR codes typically requires using a third-party library, an ActiveX control (OCX), or a web API, as VB6 does not have native QR code support. 1. Pure VB6 Implementation (No Dependencies)

A popular modern option for VB6 is the VbQRCodegen library. It is a single-file, pure VB6 implementation that allows you to generate QR codes without external DLLs or dependencies. How to use: Download mdQRCodegen.bas from GitHub - wqweto/VbQRCodegen. Add the .bas file to your VB6 project. Call the QRCodegenBarcode function to generate a picture:

' Example: Displaying a QR code in a PictureBox control Set Picture1.Picture = QRCodegenBarcode("Your text or URL here") Use code with caution. Copied to clipboard

Key Features: Supports vector-based output for high-quality scaling and can be used in MS Access. 2. ActiveX / COM Components (SDKs)

Commercial SDKs like ByteScout BarCode SDK provide robust support via ActiveX components. Implementation Steps: Install the SDK and the ActiveX components. Create an instance of the barcode object:

Dim bc As Object Set bc = CreateObject("Bytescout.BarCode.Barcode") bc.Symbology = 16 ' 16 = QRCode symbology bc.Value = "Hello World" bc.SaveImage "qrcode.png" Set bc = Nothing Use code with caution. Copied to clipboard

Capabilities: Includes support for adding logos, setting error correction levels, and exporting to formats like BMP, PNG, or EMF. 3. Web API Approach

If your application has internet access, you can use a REST API to fetch a QR code image. Example using QRServer API: URL: https://qrserver.com

VB6 logic: Use a library like Chilkat or the native WinHttp.WinHttpRequest to download the image and display it in a PictureBox. 4. Comparison of Methods Method Pure VB6 (.bas) No installation needed; lightweight; free. Manual integration of source code. ActiveX SDK Professional support; high reliability; many features. Often requires a paid license; requires installation. Web API No complex code in VB6; always updated. Requires internet; potential privacy/security risks. 5. Advanced Usage

Error Correction: Higher levels (H or Q) allow the code to remain readable even if it is partially damaged or covered by a logo.

Encoding Formats: QR codes in VB6 can be formatted for URLs, vCards (contacts), SMS, or even specialized ZATCA e-invoicing for Saudi Arabia. wqweto/VbQRCodegen: QR Code generator library for VB6/VBA

Generating QR codes in Visual Basic 6.0 (VB6) typically requires using external libraries or specialized DLLs, as the language lacks built-in support for 2D barcodes. Popular approaches include using open-source libraries like VbQRCodegen

, which provides a native-code implementation that avoids external dependencies, or professional SDKs from providers like for more advanced features. Common Methods for VB6 QR Generation VbQRCodegen (Native Library): This is a highly regarded community solution available on . It uses a

module to generate QR codes as vector images, which can be directly assigned to a PictureBox control without losing quality during resizing. vbQRCode by Luigi Micco: Another option is the

class, which allows you to encode text and manually draw the resulting matrix onto a PictureBox

method. This library also supports adding custom logos to the center of the QR code. ActiveX/COM SDKs:

For a plug-and-play experience, you can use COM-visible SDKs. For example, the ByteScout BarCode SDK allows you to create an object in VB6, set the to QR Code (value 16), and save the result as a PNG or BMP. Implementation Tip: Multiple Data Fields

If you need to encode multiple pieces of information (like a name, phone number, and ID) into a single QR code, you should concatenate the strings using a unique separator character (like a pipe or a newline ) before encoding the entire string. Example: Drawing with vbQRCode ' Basic logic for drawing a QR code from a matrix Set vbQRObj = New vbQRCode vbQRObj.Encode( "https://example.com" ) Matrix() = vbQRObj.Matrix() iScale = To vbQRObj.Size - To vbQRObj.Size - If Matrix(y, x) = ' Draw black squares on a PictureBox named picCode

picCode.Line (x * iScale, y * iScale)-Step(iScale, iScale), vbBlack, BF End If Next Next Use code with caution. Copied to clipboard If you'd like, I can help you find a specific library download or explain how to handle QR code scanning (reading) within your VB6 app. wqweto/VbQRCodegen: QR Code generator library for VB6/VBA

Generating QR codes in Visual Basic 6 (VB6) for reporting is a unique challenge because the language predates the widespread use of QR technology. To include a QR code in a report (like Crystal Reports 8.5), you typically need to generate the code as an image file first or use a specialized font/encoder. Popular Methods for VB6 Reporting wqweto/VbQRCodegen: QR Code generator library for VB6/VBA

Part 5: Decoding (Reading) QR Codes in VB6

Reading QR codes is harder than generating them. VB6 has no native camera access. You need to:

Option A: Use a Webcam API

Integrate a third-party ActiveX control like EZVideoCap or VideoCapX to capture frames, then send images to a decoding DLL.

Step 4: Generate a QR Code in Code

Private Sub Command1_Click() Dim qr As New QRCodeGenerator.QRCode Dim bmp As stdole.IPictureDisp ' Generate QR code from text Set bmp = qr.MakeQRCode("Hello from VB6! Product #12345") ' Display in PictureBox Picture1.Picture = bmp ' Optional: Save to file SavePicture Picture1.Image, "C:\QR_Output.bmp"

End Sub

Pros: Fast, offline, professional output.
Cons: Requires finding a stable, modern VB6-compatible DLL (many are paid or abandonware).