Tips & Tricks for your 4D Apps – July 2023 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 20 tips:

1. Different ways to skip On Startup without accessing code
2. Apply different color schemes for system dark/light mode (Mac only)
3. 4D Recently Opened List
4. Quick loading screen for View Pro area
5. Bind Contents to Sheet Cells with VP Set Binding Path
6. New .at() function for Collection and Entity Selection Class
7. New ways to create objects and collections
8. Hiding Class Properties
9. Use 19 R6 or newer for larger integer support
10. Generate transparent images with the TRANSFORM PICTURE command
11. Avoid Heavy Simultaneous Procedures
12. Programmatically check if web server started before creating WebSocket server
13. Quick way to find the number of records in database tables
14. New .first() function in the Collection Class
15. Where to enable the QUIC network layer in 20 R2 or newer
16. 4D v20 – Minimum Supported TLS
17. New .last() function in the Collection Class
18. How to instantiate WebSocketServer object properly
19. Installing custom fonts with your 4D application (MacOS)
20. Providing a consistently reproducible scenario for the case