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The Drag and Drop Framework in DataFlex

20m 27s

Beginner

In this course, we'll be taking a look at a new feature added in DataFlex 2022, the Drag & Drop Framework. The Drag & Drop Framework allows you to pick up pieces of your user interface and drop them somewhere else in your control scheme. This offers users a friendly and intuitive way of interacting with the data presented in your application.

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Introduction to the course.

Drag and Drop capabilities

Before we take a closer look at how the Drag & Drop framework operates, let's first go through what the capabilities are. The Drag & Drop framework allows you to add logic to your view to extend existing controls with Drag & Drop functionality. While almost all controls will support it in some form, it's good to know beforehand what you can expect.

The basics how it works

To facilitate Drag and Drop functionality in DataFlex, we've added a new component called the WebDragDropHelper. To begin adding Drag and Drop logic to your application, create an instance of the cWebDragDropHelper in your view. From there, you can set up your drag and drop paths by adding DragActions and DropActions.

In this lesson we'll put everything we talked about in the previous lesson together. We'll take a sample view inside our WebOrderMobile workspace with several lists and a treeview and add the Drag and Drop logic to it.

In this lesson, we'll look at how we can use the drag & drop framework to handle file dropping from your local filesystem to your Web Application.

In this course, we explored a new feature of DataFlex 20.1: the Drag & Drop framework. We've explored the possibilities of the framework, as well as went through how to add Drag & Drop functionality to your existing view.

Course instructor

Henri Reterink

Software Engineer , Data Access Europe B.V.

Online Documentation