You poor thing! It really is stressful, isn't it?
We have been through the same thing with our DD, at a similar age to your little one - she is now 16 mo. It's so tough when every other baby you meet seems to be devouring platefuls of food and all your baby wants is to be permanently latched on.
We decided, tough as it was, that we needed to trust DD and just go with what she wanted to do. I fed her as often as she wanted and we carried on eating together as a family. We abandoned the high chair and let DD sit on one of our laps and help herself from our plates. We didn't make any attempt to tempt or encourage her to eat or make any comment at all about how much (or little!) she ate. We found that when all pressure to eat was removed, she actually began eating more - slowly building up the quantities over a period of time. It also helped my stress levels as I wasn't faced with mounds of untouched food at the end of each meal!
I still don't know what caused it for us but suspect it may have been a loss of confidence on DD's part after a few nasty gagging incidents. I think being on our lap gave her a bit more confidence to try food again. 
I know our approach wouldn't suit everyone but just wanted to let you know that you are definitely not alone - I think it's actually pretty common.
I would agree with other posters about the snack issue - as long as the snacks you are offering are healthy, surely eating snacks is a positive thing?
This book is also an interesting read.
Good luck! 