[Freeswitch-users] any IVR example in C/C++?

Hi, I've seen some examples for ASR/TTS in JavaScripts/Lua/Python etc. I can set my extension in the dialplan and point to my application e.g. by <action application="python" data="mySpeechApp.py"/>. I am wondering how I could do this for a C/C++ application? And in the scripts languages I can set a callback method, e.g. session.setInputCallback(myInputCallback) but I didn't find how to do this in C/C++. Googled around, but didn't find much helpful info on it. Any suggestions please? Thanks! Xing -- Heriot-Watt University is a Scottish charity registered under charity number SC000278.