Possible Duplicate:
How can I simulate multi-touch in the Windows Phone 7 emulator?
I'm trying to simulate a pinch gesture so I can zoom out in a map, but I can't seem to figure out how?! Seems to me like a rookie problem, but everywhere I've checked they tell me there's supposed to be a pinch button in the toolbar on the right in the emulator.
Any ideas?
The Windows Phone emulator only supports multitouch gestures with a multitouch device. You would have to have a screen, or touchpad to work with it. Also, there has been comments about using two mice and there is a project on codeplex http://multitouchvista.codeplex.com for it.
A short video demonstration about using MultiTouchVista to emulate a pinch gesture on Windows Phone can be found here: http://vimeo.com/10330829
A great option is to get one of those cheap android tablets and turn it into a second monitor. Then you can do touch gestures in the emulator. Also, the phones are so fast now that I often just debug on the phone and skip the emulator.
来源：https://stackoverflow.com/questions/13453410/simulate-pinch-gesture-in-windows-phone-8-emulator