How can I change iphone simulator hardware configuration?

I want to change simulator to sho开发者_Go百科w retina display effect. I try to find where I can change the hardware configuration. But no result, I get. Do you know How do you change simulator to show retina display effect? And After change it, How can I compile project and see that effect? Please help me...

---

When you run the project, the hardware options are in the simulator itself, which is a separate application. They are under the hardware menu.

For the Retina display: Hardware->Device->iPhone (Retina)

---

The simulator has a device menu where you can choose between the iPad, the original iPhone or the Retina iPhone.