是不是因为我用的版本太低呢

我用的是2007版的。

% 开始播放按钮

function start_Callback(hObject, eventdata, handles)

global filename;

global pathname;

global num;

global index;

global A;

if get(hObject,'value')

t=timer('Period',2.5,'TimerFcn',{@con_play,handles},'BusyMode',...

'queue','ExecutionMode','fixedSpacing','startDelay',2.5);

start(t);

else

t=timerfind;

if ~isempty(t)

stop(t);

delete(t);

clear t

end

end

function con_play(obj,event,handles)

global filename;

global pathname;

global num;

global index;

index=index+1;

if index==num

index=1;

end

A=imread([pathname,filename{index}]);

cla

axes(handles.axes1);

image(A);

%选择图片

function choose_Callback(hObject, eventdata, handles)

global filename;

global pathname;

global num;

global index;

global A;

pause(0.00001);

index=1;

[filename,pathname]=uigetfile({'*.bmp;*.jpg;*.gif','(*.bmp;*.jpg;*.gif)';'*.bmp','(*.bmp)';'*.jpg','(*.jpg)';'*.gif','(*.gif)';},'打开图片');

if filename==0

return;

end

A=imread([pathname,filename]);

axes(handles.axes1);

imshow(A);

oldpath=cd;

cd(pathname);

filename1=ls('*jpg');

filename2=ls('*bmp');

filename3=ls('*gif');

filename={};

if ~isempty(filename1)

filename=[filename;cellstr(filename1)];

end

if ~isempty(filename2)

filename=[filename;cellstr(filename2)];

end

if ~isempty(filename3)

filename=[filename;cellstr(filename3)];

end

num=size(filename,1);

cd(oldpath);