Roland Lannuzel

• Product Owner & 4D Expert • After studying electronics, Roland went into industrial IT as a developer and consultant, building solutions for customers with a variety of databases and technologies. In the late 80’s he fell in love with 4D and has used it in writing business applications that include accounting, billing and email systems.Eventually joining the company in 1997, Roland’s valuable contributions include designing specifications, testing tools, demos as well as training and speaking to the 4D community at many conferences. He continues to actively shape the future of 4D by defining new features and database development tools.

Smarter Copy-Paste to Protect Your Data

You work across environments — test, production, staging — and you copy more than text. Sometimes it’s formulas. Sometimes it’s data that shouldn’t mo...

Roland Lannuzel

July 15, 2025 1 min read

4D 4D Write Pro Formula Security

4D Write Pro – Sign and secure documents

The purpose of this article is to show how, in an easy-to-implement way, you can sign and verify documents transparently. The obvious benefit of this...

Roland Lannuzel

January 28, 2025 1 min read

4D Write Pro Cryptography Security Word processor

4D Write Pro commands optimized again!

As each new version is released, we take into account the feedback we receive from our customers on the general use of 4D Write Pro and its commands. ...

Roland Lannuzel

January 21, 2025 1 min read

4D Write Pro Formula Pictures Programming Table Word processor

4D Write Pro: Mastering Sections and Subsections with new functions!

Sections and subsections are the building blocks of any well-structured document. You’ve likely used them countless times, perhaps without even realiz...

Roland Lannuzel

October 31, 2024 1 min read

4D Write Pro Document creation Section break

Listbox: “Blank if null” for TIME Columns and Footers!

For many versions, the "Blank if null" property has been available for "time" type zones, whether for input or display. However, it was not previously...

Roland Lannuzel

October 30, 2024 1 min read

Date time Formatter Listbox

4D Write Pro: Make Hidden Table Borders Visible (Temporarily)

Working on 4D Write Pro tables with hidden lines can be tricky! You can't tell where each cell ends, especially with merged ones. But 4D 20 R7 is ship...

Roland Lannuzel

October 30, 2024 1 min read

4D Write Pro Table User Experience

PDF/A3 Attachment Extraction

In previous posts, we explored embedding documents within PDF/A-3 files using 4D Write Pro, including generating electronic invoices. As e-invoicing b...

Roland Lannuzel

September 25, 2024 1 min read

4D Write Pro PDF

UX: Enhanced Scrolling Behavior in Subforms

User forms are all about making things easy for users. But what happens when scrolling becomes a battle between subforms and their contents? You've pr...

Roland Lannuzel

July 19, 2024 1 min read

Subform UI User Experience

Easy Reference Comparison of Objects & Collections

Objects have become an essential part of the 4D language and of Qodly. But when you declare a variable of this type, you define a reference. So, how ...

Roland Lannuzel

July 18, 2024 1 min read

Collections Language Objects Programming

4D Write Pro: Manage Empty Datasources!

Since the tables in 4D Write Pro can be populated by datasources, numerous functions have been added to personalize them as much as possible. These in...

Roland Lannuzel

July 18, 2024 1 min read

4D Write Pro Table Word processor

Roland Lannuzel

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