Tips & Tricks for your 4D Apps – July 2024 Edition

by Add Komoncharoensiri, Director of Technical Services at 4D Inc

Here we go with another set of tips and tricks.

The 4D Knowledge Base is a library of information about 4D technology where weekly tech tips and monthly tech notes are actively published. If you missed the last tips on the KB, that’s fine; here is a compilation from the past few weeks.

This blog post covers 24 tips:

1. 1. 1. Subform to Parent Form Communication with Recursive Objects
      2. Utility Method to Enable Procdump
      3. Project files to consider including in .gitignore file
      4. Creating and removing hyperlinks in Write Pro
      5. Opening documents in a specific external program using OPEN URL
      6. Matching Components to the System’s Architecture
      7. A Quick Way to Debug a Current Selection
      8. Changing the sequence number of a table
      9. Client-server web server settings
      10. .first() vs. [0] For Getting the First Element of a Selection
      11. Query Method Comparators
      12. Applying Stylesheets Selectors
      13. Making objects focusable but not enterable
      14. Use Search References vs. Find in Design
      15. How to Display Entity Selection in List Boxes Efficiently
      16. Optimizing String Assignments
      17. Coloring rows in an entity listbox
      18. Shared singleton class setter function
      19. Rolling back the 4DCatalog changes in 20 R5
      20. How and When to Use Optimistic vs Pessimistic Locking
      21. Get Requests with HTTP Request vs. HTTP Get
      22. Circular Log Limitation Database Parameter
      23. Missing values from On Web Authentication parameters
      24. How to manually a move window that is hidden behind toolbar