No result being displayed in Edit box

Question

Avinav Kumar 2021-3-16

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/774202-no-result-being-displayed-in-edit-box

回答： Aghamarsh Varanasi 2021-3-18

Using some value in listbox1 i am calculating value d which is being entered into edit9. The value in edit9 and some other value in edit10 (calculated in same way as edit9) , needs to be added and fed to edit21. But i am getting no value in edit21. Please guide

function listbox1_Callback(hObject, eventdata, handles)
% hObject    handle to listbox1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% Hints: contents = cellstr(get(hObject,'String')) returns listbox1 contents as cell array
%        contents{get(hObject,'Value')} returns selected item from listbox1
b = str2double(handles.edit1.String);
% Get list of everything in the listbox.
listboxItems = handles.listbox1.String;
% Get the index of the item they selected.
selectedItem = handles.listbox1.Value;
% Turn that selection into a double number.
listboxNumber = str2double(listboxItems{selectedItem});
listboxString = listboxItems{selectedItem};
c = -inf;
if strcmpi (listboxString,'None')
    handles.listbox2.Enable ='Off';
    handles.listbox3.Enable ='Off';
    handles.listbox4.Enable ='Off';
    handles.listbox5.Enable ='Off';
    handles.listbox6.Enable ='Off';
    warningMessage = sprintf('No Rod has been Selected');
    uiwait(errordlg(warningMessage));
    handles.edit9.String = 'No Rod has been Selected';
    set(handles.edit1,'String','');
    set(handles.edit9,'String','');
    handles.edit1.Enable ='Off';
    handles.edit9.Enable = 'Off';
    
elseif listboxNumber == 1.25
        handles.listbox2.Enable ='On';
        handles.edit1.Enable = 'On';
        handles.edit9.Enable = 'On';
        c = 4.538;
if isnan(b)
    warningMessage = sprintf('Length of Rod Taper is empty');
    uiwait(errordlg(warningMessage));
    handles.edit9.String = 'Length of Rod Taper is empty'
    return;
end
elseif listboxNumber == 1.125
       handles.listbox2.Enable ='On';
       handles.edit1.Enable = 'On';
       handles.edit9.Enable = 'On';
       c = 3.676;
if isnan(b)
    warningMessage = sprintf('Length of Rod Taper is empty');
    uiwait(errordlg(warningMessage));
    handles.edit2.String = 'Length of Rod Taper is empty'
    return;
end
elseif listboxNumber == 1
       handles.listbox2.Enable ='On';
       handles.edit1.Enable = 'On';
        handles.edit9.Enable = 'On';
       c = 2.904;
if isnan(b)
    warningMessage = sprintf('Length of Rod Taper is empty');
    uiwait(errordlg(warningMessage));
    handles.edit9.String = 'Length of Rod Taper is empty'
    return;
end
elseif listboxNumber == 0.875
       handles.listbox2.Enable ='On';
       handles.edit1.Enable = 'On';
        handles.edit9.Enable = 'On';
       c = 2.224;
if isnan(b)
    warningMessage = sprintf('Length of Rod Taper is empty');
    uiwait(errordlg(warningMessage));
    handles.edit9.String = 'Length of Rod Taper is empty'
    return;
end
elseif listboxNumber == 0.75
       handles.listbox2.Enable ='On';
       handles.edit1.Enable = 'On';
        handles.edit9.Enable = 'On';
       c = 1.634;
if isnan(b)
    warningMessage = sprintf('Length of Rod Taper is empty');
    uiwait(errordlg(warningMessage));
    handles.edit9.String = 'Length of Rod Taper is empty'
    return;
end
elseif listboxNumber == 0.625
       handles.listbox2.Enable ='On';
       handles.edit1.Enable = 'On';
        handles.edit9.Enable = 'On';
       c = 1.135;
if isnan(b)
    warningMessage = sprintf('Length of Rod Taper is empty');
    uiwait(errordlg(warningMessage));
    handles.edit9.String = 'Length of Rod Taper is empty'
    return;
end
end
%c = str2double(c);
% Do the multiplication.
d = b * c;
% Send the result into edit field 3.
%handles.edit9.String = sprintf('%.f', d);
handles.edit9.String = num2str(d);

function edit9_Callback(hObject, eventdata, handles)
% hObject    handle to edit9 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% Hints: get(hObject,'String') returns contents of edit9 as text
%        str2double(get(hObject,'String')) returns contents of edit9 as a double
t = str2double(handles.edit9.String);
if isnan(t)
    tt =0;
else
    tt =t;
end
%z = tt ;
handles.edit21.String = num2str(tt);