Product

A new tool to easily build Entity Selection list boxes

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To display a list of records, an entity selection list box is the most suitable when using ORDA technology. 4D v18 R2 simplifies your life with a new tool to easily build entity selection list boxes: List box builder. What is it? It’s a simple dialog where you can set up your list box in a few quick steps (select the table and fields to display, enter column titles, and define the column order). 

Guest Post

List box typeahead: Intuitive list searching

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by guest author Chris Belanger, a 4D developer from Canada

List box typeahead (a method for progressively searching) is not a native feature of list boxes. However, you can easily implement this feature with some creative coding. In this blog post, I’ll demonstrate the technique along with a database example and an exhaustive document explaining the details step by step.

The final result is summarized in the GIF below, It illustrates two “searches”. One for E-L-L-I-O-T, then another (after a column sort) for H-A-N-N-A-H:

Product

Ease your developer’s life with list boxes

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Our main objective is to make developers’ lives easier, day after day, and list boxes are one 4D’s most used and powerful form objects that serve this purpose. We all know that list boxes trigger many events, that’s why in 4D v18 R2 we’ve enhanced the Form event command to return even more information when list box events are triggered.
 
Want to let go of your old tricky code for guessing which row, column, or header you clicked or put your mouse on? Let us show you a smoother and smarter way to do it!
Product

Use ORDA to boost performance in Client/Server mode

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Using ORDA to access large tables (especially those with relations) in Client/Server mode has been greatly enhanced. With 4D v17 R5, you’ll see 2-3xs improved LAN performance and up to 30xs faster WAN performance. And best of all – there’s no need to change anything in your code, it’s all automatic. Interesting, isn’t it? Well, let’s delve into the details.

Tips New collection

How to display a multilevel collection in different list boxes!

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Starting with 4D v17, the content of a multilevel collection can easily be displayed in different list boxes. Meaning that you can bind several list boxes to display nested details … without a single line of code! This can be achieved by simply using an object or a collection as the data source for another list box!

With the new list box collection type, the “Current item” and “Selected items” properties have been added. Keep in mind that the “Current item” property allows you to get an object, while the “Selected item” property returns a collection.

Product

Display an entity selection in a list box

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4D v17 introduces a new concept: ORDA. If you’re not familiar with ORDA yet, we’ve created a series of blog posts to explain how to use and take advantage of ORDA. When working with ORDA, you’re going to use entity selections, which are basically objects containing references to entities belonging to the same dataclass (i.e. table). One of the main benefits of ORDA, is the very simple and powerful ability of binding with forms.

In this blog post, you’ll learn how to display an entity selection in a list box. In fact, it’s very simple.

Product

Help tips on list boxes!

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Help tips or hints are very useful, as they simplify the user interface and help users understand objects that sometimes aren’t self-evident. 4D supports help tips in most areas and inputs when hovering the pointer over them, but that was not the case with a list box object.

With 4D v16 R5 we have added the possibility to display a help tip on a list box cell thanks to the enrichment of two commands.

Product

Automatic row height in list boxes, a new 4D View Pro feature!

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Starting with 4D v16, you can set a different row height for each row in your list box. So with a few lines of code, you have a list box with rows that conform to the content. With this 4D v16 feature, we gave full control to the developer to precisely define the height for every single row of the list box.

With 4D v16 R5, we’ve decided to go further, and provide you with a fully automatic mode. It’s now possible to display lists in a gorgeous interface without any programming. You only need to set a few properties in the list box, and 4D does the rest for you. It’s magical, fluid, and again … not a single line of code!

Product

Listbox : more programming possibilities!

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Want to do generic programming using listboxes? So this feature is for you!

With 4D v16 R2, 20+ new listbox properties can be dynamically manipulated by code so 4D Developers now have the full control over the listbox form object! Among a long list: multi-style, wordwrap, single-click edit, truncation mode, column min & max width and much more. The properties apply to the entire list box, its columns, or both.

No more property available only in Design Mode through the Property List: every single property can now be set and get using 2 commands: LISTBOX SET PROPERTY and LISTBOX Get property.