function?stopwatch（cmd）?
%STOPWATCH??Creates?a?GUI?that?displays?elapsed?time?from?mouse?or?keyboard?inputs?
%?
%???Controls:?
%?????Press?the?START?button?to?begin?the?timer?（or?press?any?key?except?L?R?or?X）?
%?????????If?the?timer?has?already?been?activated?press?the?PAUSE?button?to?
%???????????stop?the?timer?（or?press?any?key?except?L?R?or?X）?
%?????????If?the?timer?has?been?paused?press?the?RESUME?button?to?continue?from?
%???????????the?paused?time?（or?press?any?key?except?L?R?or?X）?
%?????????If?the?timer?is?in?lap?mode?press?the?RESUME?button?to?continue?as?though?
%???????????the?lap?time?had?not?been?activated?（or?press?any?key?except?L?R?or?X）?
%?????Press?the?LAP?button?to?view?lap?times?（or?press?the?L?key）?
%?????????The?LAP?button?can?be?pressed?successively?to?view?mulitple?laps?
%?????Press?the?RESET?button?to?restore?the?timer?（or?press?the?R?key）?
%?????Press?the?EXIT?button?to?close?the?timer?window?（or?press?the?X?key）?
%?
%???Example?usage:?>>?STOPWATCH?
?
%?AUTHOR:?Joseph?Kirk?（c）?3/2007?
%?EMAIL:?jdkirk630?at?gmail?dot?com?
?
global?HFIG?TIME?DISPLAY?START?STOPPED?LAP?LAPFLAG?
?
if?nargin???TIME?=?0;?STOPPED?=?1;?LAPFLAG?=?0;?
??HFIG?=?figure（‘Name‘?‘秒表計時器‘?‘Numbertitle‘?‘off‘?‘Position‘?[400?300?350?100]?...?
????‘Menubar‘?‘none‘?‘Resize‘?‘off‘?‘KeyPressFcn‘?[mfilename?‘（‘‘KEY‘‘）‘]）;?
??filemenu?=?uimenu（‘Label‘?‘文件‘）;?
??uimenu（filemenu?‘Label‘?‘退出‘?‘Callback‘?[mfilename?‘（‘‘EXIT‘‘）‘]）;?
??helpmenu?=?uimenu（‘Label‘?‘幫助‘）;?
??uimenu（helpmenu?‘Label‘?‘幫助文件‘?‘Callback‘?‘help?stopwatch‘）;?
??uimenu（helpmenu?‘Label‘?‘關(guān)于7‘?‘Separator‘?‘on‘?‘Callback‘?[‘msgbox（{‘‘?Stopwatch‘?...?
????‘?GUI‘‘?‘‘?‘‘?‘‘?by?Joseph?Kirk?（c）?2007‘‘?‘‘?jdkirk630@gmail.com‘‘}‘‘About‘‘）‘]）;?
??START?=?uicontrol（HFIG?‘style‘?‘PushButton‘?‘Position‘?[10?10?75?25]?...?
????‘String‘?‘開始‘?‘Callback‘?[mfilename?‘（‘‘START‘‘）‘]）;?
??LAP?=?uicontrol（HFIG?‘style‘?‘PushButton‘?‘Position‘?[95?10?75?25]?...?
????‘String‘?‘計時?（L）‘?‘Callback‘?[mfilename?‘（‘‘LAP‘‘）‘]?‘Enable‘?‘off‘）;?
??uicontrol（HFIG?‘style‘?‘PushButton‘?‘Position‘?[180?10?75?25]?...?
????‘String‘?‘從置?（R）‘?‘Callback‘?[mfilename?‘（‘‘RESET‘‘）‘]）;?
??uicontrol（HFIG?‘style‘?‘PushButton‘?‘Position‘?[265?10?75?25]?...?
????‘String‘?‘退出?（X）‘?‘Cal