How to show image's sliced properly?

[leegod]

Compare these 2 pictures.
At unity gui's Image, just register image is easy and shows with no problem.

But why ngui does now show image's sliced? And why it need to make atlas? So unconvenient.
 

[ArenMook]

You don't need to make it an atlas. You can use UI2DSprite (ALT+SHIFT+D) to draw Unity sprites directly, or UITexture (ALT+SHIFT+T) to draw a raw texture. Slicing information can be specified right on the sprite if you choose the "Sliced" type.