Creating Objective-C++ XPCOM Component August 11, 2007 — Praveen Matanam If you want to change a C++ Component into Objective-C++ component then simply follow the instrucitons. * The modifications are take place in the SRC directory not in the PUBLIC directory and Main directory. * The file extension for Objective-C++ file is mm. * if the C++ file contains Objective-C++ code then change the extens