about the popup

I want to use popup that replace play buttons,

this is my code

function f2()
clear all;

obj1 = mmreader('phone.avi');
obj2 = mmreader('can.avi');
%obj3 = mmreader('book.avi');
%obj4 = mmreader('phone.avi');

vid1 = read(obj1);
vid2 = read(obj2);
%vid3 = read(obj3);
%vid4 = read(obj4);
frame1 = 1;
frame2 = 50;
% frame3 = 30;
% frame4 = 1;
f4 = 1;

hst1=0;
hst2=0;
% hst3=0;
% hst4=0;

h = figure('Name','Video ', 'NumberTitle','off','Color',[1,1,1],'Toolbar','none','Visible','on', 'Position',[30 40 1000 700],...
'Resize','on','menu','none'); 

hstat1 = uicontrol('unit','pixel','style','checkbox','value',0,'position',...
[50 530 25 25],'units','normalized');
hstat2 = uicontrol('unit','pixel','style','checkbox','value',0,'position',...
[50 450 25 25],'units','normalized');
% hstat3 = uicontrol('unit','pixel','style','checkbox','value',0,'position',...
% [50 480 25 25]);
% hstat4 = uicontrol('unit','pixel','style','checkbox','value',0,'position',...
% [50 410 25 25]);

hplay1 = uicontrol('unit','pixel','style','pushbutton','string','藥罐_PLAY',...
'position',[50 530 70 40],'backgroundColor',[0.3,0.7,1],'units','normalized','callback',{@play1_callback});
hplay2 = uicontrol('unit','pixel','style','pushbutton','string','手錶_PLAY',...
'position',[50 450 70 40],'backgroundColor',[0.3,0.7,1],'units','normalized','callback',{@play2_callback});
%hplay3 = uicontrol('unit','pixel','style','pushbutton','string','書本_PLAY',...
%'position',[50 480 70 40],'backgroundColor',[0.3,0.7,1],'callback',{@play3_callback});
%hplay4 = uicontrol('unit','pixel','style','pushbutton','string','手機_PLAY',...
%'position',[50 410 70 40],'backgroundColor',[0.3,0.7,1],'callback',{@play4_callback});

hstop1 = uicontrol('unit','pixel','style','pushbutton','string','藥罐_STOP',...
'position',[50 370 70 40],'backgroundColor',[0.2,1,0],'units','normalized','callback',@stop1_callback);
hstop2 = uicontrol('unit','pixel','style','pushbutton','string','手錶_STOP',...
'position',[50 290 70 40],'backgroundColor',[0.2,1,0],'units','normalized','callback',@stop2_callback);
% hstop3 = uicontrol('unit','pixel','style','pushbutton','string','書本_STOP',...
% 'position',[50 170 70 40],'backgroundColor',[0.2,1,0],'callback',@stop3_callback);
% hstop4 = uicontrol('unit','pixel','style','pushbutton','string','手機_STOP',...
% 'position',[50 90 70 40],'backgroundColor',[0.2,1,0],'callback',@stop4_callback);

hexit = uicontrol('unit','pixel','style','pushbutton','string','EXIT',...
'position',[50 210 70 40],'backgroundColor',[1,0,0],'units','normalized','callback',@exit_callback);

while (1)

if hst1==1 
    %subplot('Position',[left bottom width height])
    %subplot(2,1,1,'Position',[0 0 320 240]); imshow(vid1(:,:,:,frame1));
    subplot(2,1,1); imshow(vid1(:,:,:,frame1),'InitialMagnification','fit');
    %imshow(checkerboard)
    %truesize(a,[640 480]);
    if frame1 < size(vid1,4) 
        frame1 = frame1+1;
    else
        frame1 = 1;
    end

end

if hst2==1
     subplot(2,1,2); imshow(vid2(:,:,:,frame2));
    if frame2 < size(vid2,4) 
     frame2 = frame2+1;
    else
     frame2 = 1;
    end
end

% if hst3==1 
    % subplot(2,2,3); imshow(vid3(:,:,:,frame3));
    % if frame3 < size(vid3,4) 
       % frame3 = frame3+1;
    % else
       % frame3 = 1;
    % end
% end
% 
% if hst4==1 
    % subplot(2,2,4); imshow(vid4(:,:,:,frame4));
    % if frame4 < size(vid4,4) 
        % frame4 = frame4+1;
    % else
        % frame4 = 1;
    % end
% else 
    % subplot(2,2,4); imshow(vid2(:,:,:,1));
%end

drawnow; 
if f4 ==10000
    break;
% else f4 = f4+1;
end
end

function play1_callback(hObject0,eventdata0)
set(hstat1,'value',1);
hst1=1;
set(hplay1 ,'backgroundColor',[1,1,0],'string','藥罐_播放中');
%set(gcf,'units','normalized','position',[0 0 1 1]);
end

function play2_callback(hObject1,eventdata1)
set(hstat2,'value',1); 
hst2=1;
set(hplay2 ,'backgroundColor',[1,1,0],'string','手錶_播放中');
end

% function play3_callback(hObject2,eventdata2)
% set(hstat3,'value',1); 
% hst3=1;
% set(hplay3 ,'backgroundColor',[1,1,0],'string','書本_播放中');
% end

% function play4_callback(hObject3,eventdata)
% set(hstat4,'value',1); 
% hst4=1;
% set(hplay4 ,'backgroundColor',[1,1,0],'string','手機_播放中');
% end

function stop1_callback(hObject,eventdata)
set(hstat1,'value',0);
hst1=0;
set(hplay1 ,'backgroundColor',[0.3,0.7,1],'string','藥罐_PLAY');
end

function stop2_callback(hObject,eventdata)
set(hstat2,'value',0);
hst2=0;
set(hplay2 ,'backgroundColor',[0.3,0.7,1],'string','手錶_PLAY');
end

% function stop3_callback(hObject,eventdata)
% set(hstat3,'value',0);
% hst3=0;
% set(hplay3 ,'backgroundColor',[0.3,0.7,1],'string','書本_PLAY');
% end
% 
% function stop4_callback(hObject,eventdata)
% set(hstat4,'value',0);
% hst4=0;
% set(hplay4 ,'backgroundColor',[0.3,0.7,1],'string','手機_PLAY');
% end

function exit_callback(hObject,eventdata)
f4=1000;
stop1_callback;
close gcf;
end

end

How to use popup control??

[Jan]

We see a lot of code. What is the connection between the code and the vague question "how to use popup control"? Can you explain more details about the question? Do you want to know, how to select an element of a popup menu?