Calling Additional Functions in GUI

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Salaheddin Hosseinzadeh
评论： Joseph Cheng 2014-7-17
Hello Everyone!
Thanks for your attention.
I've created a GUI using GUIDE with lots of edit boxes, what I do in the edit call backs is to check if the input value is valid or not.
I've 3 push buttons, I want to acquire the edit boxes value in the push buttons call back, so I thought of creating a function to do that, also there is a series of plots. So I defined 2 functions at the end of the GUI m file, "Plotter" and "ValueCollector", to plot on the axes which is on the form, and second is to read all the edit boxes values at once.
PROBLEM is: "ValueCollector" does not work in push buttons call back, but it works in the dropdown menu call back, buttons are off until user pick a choice from the dropdown menu, then they will be on, to dropdown menu runs the "ValueCollector" for the first time (I don't know if it's related or not)
% Probe Selector is the popup menu
function Probe_Selector_Callback(hObject, eventdata, handles)
handles = valueCollector(handles);
handles.CurrentProbe.X = handles.probe.info(handles.CurrentProbe.Num,2);
handles.CurrentProbe.Y = handles.probe.info(handles.CurrentProbe.Num,3);
% some processing based on values collecter by ValueCollector which is
% correct
plotter(handles); % Plots everything
set(handles.arb_button,'Enable','on');
guidata(hObject,handles);
function arb_button_Callback(hObject, eventdata, handles)
handles = valueCollector(handles); % this is not working!!
plotter(handles);
% some processing
guidata(hObject,handles);
function [handles] = valueCollector (handles)
% this collects all the property values of the edits
handles.initial.Fs = str2num(get(handles.ArbFs_edit,'String'));
handles.initial.cycles = str2num(get(handles.cycles_edit,'String'));
handles.initial.fc = str2num(get(handles.fc_edit,'String'));
handles.initial.radSize = str2num(get(handles.pattern_edit,'String'))/2;
handles.initial.phaseShift=str2num(get(handles.phaseShift_edit,'String'))*pi/180;
handles.initial.Mu = str2num(get(handles.Mu_edit,'String'));
handles.initial.G = str2num(get(handles.G_edit,'String'));
handles.CurrentProbe.Num = get(handles.Probe_Selector,'Value');
demo = get(handles.checkbox1,'Value');
if demo == 1
handles.initial.demo = 'demo';
else
handles.initial.demo = 'non';
end
"ValueCollector" works file in the popup_callback but it does not work in 2 push buttons that I have! the variable handles that returned by ValueCollector function is not updated!
I used guidata(hObject,handles) at the end of the ValueCollector but the problem is still remains!
I tried ValueCollector(hObject,eventdata,handles) nothing chande, I add a guidata(ho...) after calling ValueCollector in the push buttons, still not working! I'm running out of ideas.
Thanks for your help in advance!

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采纳的回答

Joseph Cheng
Joseph Cheng 2014-7-17
Not sure what is going on since i can't reproduce it not updating. Here is a quick test i did using a few edit boxes and pushbuttons. the first one gets and stores whats inside the edit boxes. the second buttons displays whats in handles into the static text fields.
  2 个评论
Salaheddin Hosseinzadeh
Salaheddin Hosseinzadeh 2014-7-17
编辑：Salaheddin Hosseinzadeh 2014-7-17
Dear Joseph,
Thanks for the test, I change your test code as follows, and yet it works! It does what I exactly want to do, I'll try to see if I can fix my particular problem according to this instance!
I have a guidata(hObject,handles) at the end of one of the popup should I disable that?! I'm gonna give it a try :(
% --- Executes on button press in pushbutton1.
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)
handles = ValueCollector(handles);
set(handles.text3,'String',handles.X);
% guidata(hObject,handles);
function handles = ValueCollector(handles)
handles.X = get(handles.edit1,'String');
handles.Y = get(handles.edit2,'String');
% guidata(hObject,handles);
% --- Executes on button press in pushbutton2.
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)
handles = ValueCollector (handles);
set(handles.text3,'String',handles.X)
% set(handles.text4,'String',handles.Y)
Joseph Cheng
Joseph Cheng 2014-7-17
I don't think the guidata() at the end of the popup would do anything strangely. Maybe put some breakpoints in the code to and see where the handles update breaks down.

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更多回答（1 个）

Image Analyst
Image Analyst 2014-7-17
Get the string value of edit boxes, not the value, even if what's in there is a number:
handles.X = str2double(get(handles.edit1,'String'));
handles.Y = str2double(get(handles.edit2,'String'));
but that's still not very robust since you are not checking if the user put in some non-numerical text instead of a number.
  1 个评论
Salaheddin Hosseinzadeh
Salaheddin Hosseinzadeh 2014-7-17
Hi Image Analyst
Thanks for your answer
I wrote the code roughly, definitely I do this :(
I'll change the code to what exactly (almost) it is

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