Web DataWindow
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.
Functionality
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.
Client requirements
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”.
Server requirements
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.