clear all screens=0; [wPtr,rect]=Screen('OpenWindow',screens,0,[]) HideCursor; tic 曰whi1etoc<5 Lend black=BlackIndex(wPtr); white=WhiteIndex(wPtr); Screen('FillRect',wPtr,white); Screen(wPtr,'Flip'); tic Screen 'Close'? 曰while toc<5 end ·关闭指定窗口 Screen('Close',wPtr); ●Screen('CloseAll')关闭所 ShowCursor; 有窗口
l 关闭指定窗口 l Screen(‘CloseAll’)关闭所 有窗口 Screen ‘Close'?
【练习】 。在FlipScreen中尝试做一些改动，看看效果有什么不同之 处？ clear all screens=0; [wPtr,rect]=Screen ('OpenWindow',screens,0,[]) [wPtr,rect]=Screen('OpenWindow',screens,[00 255]);open a winodw with blue screen tic 月while toc<3 号waiting for33ecg end black=BlackIndex(wPtr); white=WhiteIndex(wPtr) Screen('FillRect',wPtr,white); Screen('F111Rect'wPtr,[o 255 01.[500 500 1000 12001):s fill in a gzeen zectancle in [500500 1000 20001 Screen(wPtr,'Flip'): tic 月while toc<1号wa1 cing for13ecg -end Screen('Close',wPtr); ShowCursor;
l 在FlipScreen中尝试做一些改动，看看效果有什么不同之 处？