我的应用如何通过照片发送彩信？

I would like to compose a message from my app which I can include a photo, for example: I entered my album in the IPhone and open a photo I can click on option and then on MMS tab and the photo will be added in a message and I can send it then to a whatever contact I want. what I want is that when I click on a button on my app, a message window will open with a photo from my resources in the XCode, how can I do that?I would like to compose a message from my app w