I discovered a problem using the Xerces internal string class on Microsoft Windows. The comments in XMLString. Jquery Pdf Viewer Lightbox. hpp require the caller of replicate and other similar functions to release the memory returned. The problem comes from linking your application against the Xerces-C++ library as a DLL. The strings are allocated from the DLL's local heap. If both your application and the XercesLib DLL use the exact same C runtime (CRT) library DLL, then all is well. If, however, your program uses the single-threaded CRT and XercesLib uses the multithreaded CRT, DLL problems happen.

When your program attempts to release the string memory, the C runtime notices that the memory did not come from your application's local heap. For debug builds it throws an exception, but for release builds it may silently leak memory. The sample programs found in earlier versions of Xerces (like 1_5_1) avoided this by simply not releasing the memory.

My fix for this was to add a pair of static discard functions to the XMLString class. Because the string memory is released by code executing inside the DLL, the correct local heap is used, and no debug assertion results. I was pleased to see that Xerces developer Tinny Ng added this to the XMLString class and went a step further to null the string pointer (see ). The other nice feature of this is that programmers don't need to worry about how the implementation of XMLString allocates memory. Instead of guessing whether they should be using delete[] or free, they can just call XMLString::release. You can, of course, just make sure the CRT that your application expects is the same as the CRT used by the XercesLib DLL. Here in Part 1, you've seen how to link the Xerces-C++ XML library into applications written in Linux and Windows, and I've demonstrated parsing with the SAX API by creating a bar graph in ASCII art.

Introduction to XML and XML With Java: If you are looking for sample programs to parse a XML file using DOM/SAX parser. All these Programs uses Xerces for. When i debug this program i received a. Xerces for C++ Tutorial using Visual C++. Is because the official documentation for Xerces is a little light on sample.

In, I'll show you how to load, manipulate, or synthesize a DOM document, and create the same bar graph using Scalable Vector Graphics (SVG). Related topics • Download the and figures for this article. • In ' by the author, learn to load, manipulate, or synthesize a Document Object Model (DOM) document, and how to recreate the bar graph in Part 1 using Scalable Vector Graphics (SVG) (developerWorks, August 2003). • Find out more about IBM's parser project, which is based on Xerces-C++, and available on alphaWorks. • Read the terms of the, which governs the use of Xerces-C++ in your applications.

• Read about or download the Apache XML Project's, an XSLT transformation engine. • See other Apache-sponsored. • Read the specifications at SourceForge. • Take the basic SAX tutorial, ' (developerWorks, July 2003). • Catch up on the DOM: • • • • • • • • • • • Read about the, at the W3C site. • Read about animating SVG graphics on a timeline with at the W3C site and in the (September 2002). • Find out how you can become an.