Cocoa sprite/canvas/key input help

hey, i'm new forum , cocoa, have gotten it. can things, need few ns commands.

(1) i'm creating canvas in sprite able move around , have animation. best, nsview or nsimageview?

(2) ns commands sticking sprite resources onto canvas, , make color of transparent? if there other pict commands.

(3) how xcode listen key down, , if so, activate code?

(4) lastly, string commands? like, string count, mid, nthfield, or that.

thanks,
-matt

 

1) don't know, abstain.
2) don't know, abstain.
3) mean how xcode replacement or in code? sort of macro? or mean how listen keypress event in cocoa application?
4) http://developer.apple.com/document...lasses/nsstring_class/reference/nsstring.html
there message

code:

-length

. don't know mid means. there message

code:

-characteratindex

character @ particular position. not sure if mean nthfield, maybe it. if want tokenize string there

code:

-componentsseparatedbycharactersinset:(nscharacterset *)separator

hopefully others can rest.

-lee

 

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