Passing data back and forth between forms
Wouldn't it be great if you could just open a form and pass it some parameters to initialize your form objects? What about being able to also get the ...
October 6, 2017
1 min read
4D Language
Design application logic with strong typing, object oriented principles, structured error handling, and modular class architecture. Write clear, maintainable code that works consistently across desktop, web, REST, and client server environments.
4D Summit 2016: Laurent Esnault presents workers and UI in preemptive mode
Our own VP of Engineering, Laurent Esnault, explains exchanging information between multiple processes AND between processes and forms during his Brea...
September 22, 2017
1 min read
Difference between cooperative and preemptive explained by Laurent Esnault at 4D Summit 2016
Laurent Esnault, VP of Engineering, explains the difference between cooperative and preemptive processes during his Break Out Session about Preemptive...
September 4, 2017
1 min read
A new tool: JSON Validator
4D v16 R4 introduces a new command: JSON Validate. This command allows you to verify that a JSON document is “valid” according to your JSON schema. Th...
August 23, 2017
1 min read
Retrieve the license information by programming
When you perform analysis, reporting or debugging of your server application you may want to know the number of available clients, the number of consu...
July 26, 2017
1 min read
Create your own process and user monitoring
You need to get the list of processes running on your 4D server, 4D remote or 4D standalone to create your own Administration Window? You want to know...
July 25, 2017
1 min read
Define the tab order by programming
Here are 2 very common developer needs: 1. Depending on the user criteria, you want to rearrange the objects in the form. – 2. Depending on the select...
July 24, 2017
1 min read
Support of pictures in Objects
From 4D v16 R4, we have added the support of pictures in object attributes. For example, if you use an object to exchange settings or data between met...
July 20, 2017
1 min read
Timestamp is now available !
"Time is money", said Benjamin Franklin, so the more accurately we can count it, the better. We now have a new command for getting a precise UTC time ...
February 23, 2017
1 min read
Get list of formats contained in C_PICTURE
A picture field or variable can store different image formats – and even one image in several formats at the same time. As example, an image could be ...
December 7, 2016
1 min read