The Web DataWindow is a thin-client DataWindow implementation for Web applications. It provides most of the data manipulation, presentation, and scripting capabilities of the PowerBuilder DataWindow without requiring any PowerBuilder DLLs on the client.
The Web DataWindow supports a subset of the PowerBuilder DataWindow events and methods, including dynamic modification of the DataWindow object. The user can modify and update data. Composite, Graph, OLE, TreeView, and RichText presentation styles and controls are not supported.
The HTML Web DataWindow works in most browsers, but the appearance of the generated HTML is usually best in Internet Explorer. Generated HTML can be dynamically optimized for Netscape or Internet Explorer, or scaled back to handle older browsers. The XML Web DataWindow and the XHTML Web DataWindow require browsers that support the following client-side technologies: XML, XSLT, XHTML, CSS, and JavaScript. For information about supported browsers, see “Browser requirements for the XML Web DataWindow”.
A component server and a dynamic page server work together to generate a client control with data and include it in a Web page. Each time the user requests a new page of data, updates data, or inserts or deletes rows, the server gets a request to generate a new page. Depending on how state is managed, the component might retrieve data each time it is called, causing added load on the server.
