MATLAB: Edit text box not working

edit text box not working

I am using the ginput to create a rectangle and I want the X axis of the rectangle to show in my edit text box. i have tried the code below but unfortunately it still remains unchanged.

function pushbutton1_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

global hrect %makes the button known to other variables
global xmin
global ymin
[x,y] = ginput(2)
xmin = min(x)
xmax = max(x)
ymin = min(y)
ymax = max(y)
width = xmax - xmin %draws the width which is the diff b/w xman n xmin
height = ymax - ymin %draws the height 
hrect = rectangle('Position', [xmin ymin width height]) %creates the rectangle with 2 axes, x n y.
set(hrect,'FaceColor',[1 0 0]) %sets the fill color to red
   a = get(handles.pushbutton1,'String',num2str(xmin))
   set(handles.rectXedit,'String',a)

This code below shows the edit text function

function rectXedit_Callback(hObject, eventdata, handles)
% hObject    handle to rectXedit (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 rectXedit as text
%        str2double(get(hObject,'String')) returns contents of rectXedit as a double
global xmin 
%disp(xmin)
%get(hObject,'String',num2str(xmin))

Please How can I show this in the text edit box. Thanks

Best Answer

a = get(handles.pushbutton1,'String',num2str(xmin))

should be

a = num2str(xmin);

Related Solutions

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Replace handles.rect with hrect

MATLAB: Pushbutton in GUI

I do not know whether you refer to the variables which are executed in pushbutton1 to pass it to pushbutton2 or you want to know that pushbutton1 is pushed so you pass something over to pushbutton2. Either way I will provide you simple examples:

To pass the value of a variable calculated in pushbutton1 to pushbutton2, simply use the global command.

function pushbutton1_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB



% handles    structure with handles and user data (see GUIDATA)



global var1;
x = get(input_x.handles,'Value',str2num());
y = get(input_y.handles,'Value',str2num());
var1 = x*y^2;
guidata(hObject,handles);
function pushbutton2_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton2 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
global var1;
disp(var1);
guidata(hObject,handles);

If you would like to pass something from pushbutton1 to pushbutton2 when you know pushbutton1 is pushed, simply get the Value from the pushbutton while globalizing the variables you want to pass:-

function pushbutton1_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
global var1;
x = get(input_x.handles,'Value',str2num());
y = get(input_y.handles,'Value',str2num());
var1 = x*y^2;
guidata(hObject,handles);
function pushbutton2_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
global var1;
if get(handles.pushbutton1,'Value')
    disp(var1);
end
guidata(hObject,handles);

There you go. Try to phrase your questions in a more detailed manner next time.

Related Question

How can i use a global var with call_back functions