Is there any way by which we can have a hangout session within our webapp, say in an iframe ? I was about to experiment with hangout api, but going by existing apps on hangout, it seems they can only be viewed and used from within Google+.
Is there a work around where I can make the user feel that hangout is a part of my app rather than my app being part of the hangout ?
There's no way to embed a hangout into your web application, but you can use the hangout button to launch a hangout app. This allows you to integrate features and data from your web application into a hangout.
The hangout button is made up of an image and a hangout launching link. It comes in a few sizes. Here's the code for the smallest size (75x19 px)
<a href="https://plus.google.com/hangouts/_?gid=APP_ID" style="text-decoration:none;">
<img src="https://ssl.gstatic.com/s2/oz/images/stars/hangout/1/gplus-hangout-15x79-normal.png"
alt="Start a Hangout"
style="border:0;width:79px;height:15px;"/>
</a>
In this snippet you must substitute APP_ID with your application's ID from the API console. When you are viewing your project you'll find the application ID at the end of the URL.