Populate one pop up menu on the basis of selection in another pop up menu.

1 次查看（过去 30 天）
Sidra Aleem
Sidra Aleem 2017-3-22
编辑： Sidra Aleem 2017-3-23
Hello
I have two popup menus. popup menu1 : Directory and popup menu2: File names. In pop up menu 1 directory names should appear and in popup menu 2 Files in that directory should appear.
However, when I click any of the directory names in popup menu 1 then only the file names in first directory are being displayed. Please help me.
for i = 1 : size(dirinfo,1)
%Reading names of People
People(i).Name = dirinfo(i,1).name;
text{i}= People(i).Name;
%Reading files of all people in structure format
cd(Functions_Dir)
People(i).Image_Name = ReadFileNames([Home_Dir '\Inputs\' dirinfo(i,1).name]);
text1{i}= People(i).Image_Name ;
cd ..
end
set(handles.popupmenu1,'string',text);
a=get(handles.popupmenu1,'value');
switch a
case 1
tex= text1{1};
case 2
tex= text1{2};
end
set(handles.popupmenu2,'string',tex);

请先登录，再回答此问题。

回答（1 个）

ES
ES 2017-3-22
In call back of popupmenu1 you should write this..
a=get(handles.popupmenu1,'value');
switch a
case 1
tex= text1{1};
case 2
tex= text1{2};
end
set(handles.popupmenu2,'string',tex);
is this done? I am not able to see the functions in your code. That is why I am clarifying.
  7 个评论
显示 5更早的评论
Jan
Jan 2017-3-22
@Sidra: It is not easy to guess, what exactly "the first directory" is. Remember that I do not have the faintest idea about what you are doing.
I assume the problem appears at the location, where you define, what the "first" and "second" directory is. Where does this happen?
Do you know how to step through the code using the debugger?
Sidra Aleem
Sidra Aleem 2017-3-23
编辑：Sidra Aleem 2017-3-23
This part of the code takes directory names and displays them in first popup menu. I commented this part as well as is getting peoples names(directory names).
function pushbutton6_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton6 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% --- Executes on button press in Process_Batch.
function pushbutton7_Callback(hObject, eventdata, handles)
% hObject handle to Process_Batch (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
if isfield(handles,'fname')
Present_Dir = 'D:\我的文档\MATLAB\'; %Present Working Directory
Home_Dir = [Present_Dir '\Image Processing']; % Home Directory
Functions_Dir = [ Home_Dir '\Functions' ]; %Functions Directory
Input_Dir=handles.fname;
dirinfo = dir(Input_Dir);
dirinfo(~[dirinfo.isdir]) = []; %remove non-directories
tf = ismember( {dirinfo.name}, {'.', '..'}); %remove current and parent directory.
dirinfo(tf) = []; %remove current and parent directory.
for i = 1 : size(dirinfo,1)
%Reading names of Directory
People(i).Name = dirinfo(i,1).name;
text{i}= People(i).Name;
end
set(handles.popupmenu1,'string',text)
end

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 File Operations 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by