有用的网址

http://www.cplusplus.com/reference/cstdio/remove/        C      API有用的网址

http://stackoverflow.com/questions/1584078/app-modal-nspanel-sheet-dialog-nsthread-window-hangs?rq=1  mac runmodalforwindow相关的资料

http://www.cocoachina.com/cms/data/sitemap.html