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? These are two scenarios that 4D v18 lets you to handle. This blog post is for you if you want to create a custom remote connection dialog and connect it 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:
Sometimes you want to write code being able to work with different variable types, this is especially true for generic coding. Using pointers can make code more difficult to read and debug. Sometimes it’s not possible at all, for example when you want to assign a generic variable to a form object as the data source.
A new command is now at your disposal to let you to declare a variable that can store different types of values. Say hello to the new C_VARIANT command!
4D v16 R4 made your dreams come true with the delivery of a huge feature: tables. Real tables where text automatically wraps to fit the column size and don’t “break” when your data changes! Since then, you’ve been able to create tables with as many rows and columns as desired. Plus, you can define the style of the table, each row, column, or cell, including the width of the columns. Most of these operations were achieved by programming, but what if we told you that with 4D v18, the width of columns can be resized by end users?
Do you need to print a 4D form with an embedded 4D View Pro document, or maybe displaying part of the document in a 4D View Pro document? With the VP Convert to picture command, you can create an SVG from a part of the 4D View Pro document and handle it like a picture. We’ll show how in this blog post.
Classic 4D binary structures let you define style sheets to specify the font, font size, and text style to use in your forms for both the macOS and Windows platforms. Project databases let you go even further by letting you define the properties of a 4-state button or specify the color and border of all line objects or even set the header height of all of an application’s list boxes! Inspired by the grammar and syntax of CSS, 4D adapted it to meet the specific needs of the forms in 4D project databases. Thanks to style sheets, you can configure all of the properties to create truly visually appealing forms. This blog post shows you how!
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