Wondering how to create a nice and dynamic user interface? Typically when a form is resized, the form objects whose horizontal sizing or vertical sizing properties are set to move or grow, are automatically resized. In some cases (e.g., finer user interface management), developers choose to manage form object size and position by programming. To do so, they check the “on resized” event which is triggered within the form method. But what happens when the form contains one or more subforms? On many levels? This blog post gives you the answers!
4D provides libraries to help you develop applications. One of these libraries is standard and contains preconfigured form objects and widgets, while other libraries are custom. The standard library is “read-only” and its behavior doesn’t change when developing project databases (with the exception of minor, cosmetic interface differences). You also have the ability to create your own custom libraries to save your own form objects or group of objects. In this case, a few changes have been made to make them even more powerful. The following is everything you need to know about these changes:
Have you ever needed to use methods with both thread-safe and not thread-safe calls, with conditions that skip over commands that are not thread-safe? Currently the compiler prevents doing this and an error is thrown, however there’s a flag that lets you disable this check and this blog post shows you how.
Want to use 4D Write Pro to create HTML emails with static pictures in the text? Maybe something like a fancy newsletter with pictures of the top ten destinations in the world, or simply include your company logo? Wondering how to accomplish this? Wonder no more because with the 4D v18, you can in three simple steps:
In this blog post, we showed you how to convert a binary database into a project database. Once everything is ready and the conversion has successfully completed, you can start working with your project database. However, some questions may arise: are all the files in the database useful? It’s obvious that the”.4DB” structure file is no longer needed. Can I delete other files?
Here’s everything you need to know after the conversion.
Before exchanging files (by email for example), we often compress them to reduce their size before transmitting them. With 4D v18, you can compress and uncompress your files by programming without the need for external libraries or tools. Here are the new commands that allow you to do so:
Do you need to build a customized 4D connection dialog? Interested in connecting your client application to different servers? Two different scenarios that 4D v18 allows you to handle. This blog post is for you if you want to create a custom remote connection dialog or deploy merged, standalone 4D applications to merged 4D servers. Keep reading!
As of 4D v18, a new set of 4D View Pro form events are available. They return special information that can be accessed with the new FORM Event command, introduced in this blog post. Say hello to: “On Column Resize”, “On Row Resize”, “On Clicked”, “On Double Clicked”, “On Header Click”, “On Selection Change”, and “On After Edit”.
You already know that 4D Write Pro allows you to create tables and append rows to them. With 4D v18, we’ve got more thrilling news! We’re excited to announce that managing the insertion and deletion of rows and columns is not only possible, it’s also very easy. This can be done either by programming, thanks to four new commands, or by using the interface (via the widgets or the contextual menu). Keep reading for more details!
As you may already know, the Form event command identifies the type of form event that has just occurred. It’s typically used within a form or object method.
Some changes have been made in 4D v18, but it’s all good. Here’s what you need to know:
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