FaceBook SDK

Hey, Cheers for checking this out!

I have a couple questions regarding the Facebook SDK.

I want to share a screen shot that i take in game and post it, but i want the share dialogue to pop up for the player so that they can fill in the text field etc. I have it working just now with being able to upload screen shots to my photo's but i want to take this photo and use it in the share dialogue?

It doesn't make sense to me that they allow you to post directly to Facebook with a screen shot but they wont allow you to pass in a screen shot to the share dialogue?

So what i am doing right now is posting to Facebook then trying to grab the URL of the posted picture which just gives me back a white image, but if i type in the URL in the browser it works fine? Maybe not enough time for the callback?

I am seeing things like me/photos which I get but there are other things that baffle my mind say i want to upload something to Facebook and use it as a staging area for a screen shot, how would i put this up but not have it on their wall? so that i can grab the URL and use this image as my share dialogue image?

Essentially i just want to take a screen, put it on a share dialogue and go haha.

Also when my share pops up in game which is in landscape i also get this weird issue that doesn't work in my eyes its like the share box is popping up as if the game is in portrait and not landscape?

Cheers