Some APIs, such as DOM and QXmlStreamWriter, have a higher level way of generating XML documents also.

SAX2

DOM

The Simple API for XML, or SAX2, specifies a parse event-driven API for a set of classes that enable low-level, sequential-access parsing for an XML document.

To utilize the SAX API, it is necessary to define callback functions that are passively called in response to various SAX events such as

SAX can process an XML file of almost any size.

SAX parsing can proceed only in the forward direction, and SAX applications are expected to do their processing sequentially while the document is being parsed.

The Document Object Model, or DOM, is a standard API that can represent XML elements as objects (i.e., nodes) in a navigable tree structure.

Because DOM loads the entire XML file into memory, the maximum file size document that an application can handle is limited by the amount of available RAM.

DOM is especially suitable for applications that require random access (as opposed to sequential access) to the various parts of an XML document.

It does not provide a way of handling parse errors or modifying elements, but it does provide an API for creating documents.

To use Qt's XML Module, add the following line to your project file: