GUI access data from other callback functions

So, I am following some of the examples like I found on the internets. But I just can not seem to access data/variables set by other callback functions in my GUI. Basically my GUI is just having the user config some values, and then I have two buttons which pass those values to functions. But I just can not access the variables set in those other callback functions!

Attached below is my GUI code.

Any input?

function varargout = DiracGUI(varargin)
% DIRACGUI MATLAB code for DiracGUI.fig
%      DIRACGUI, by itself, creates a new DIRACGUI or raises the existing
%      singleton*.
%
%      H = DIRACGUI returns the handle to a new DIRACGUI or the handle to
%      the existing singleton*.
%
%      DIRACGUI('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in DIRACGUI.M with the given input arguments.
%
%      DIRACGUI('Property','Value',...) creates a new DIRACGUI or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before DiracGUI_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to DiracGUI_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help DiracGUI

% Last Modified by GUIDE v2.5 07-Jul-2012 16:40:42

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @DiracGUI_OpeningFcn, ...
                   'gui_OutputFcn',  @DiracGUI_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT

% --- Executes just before DiracGUI is made visible.
function DiracGUI_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to DiracGUI (see VARARGIN)

% Choose default command line output for DiracGUI
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes DiracGUI wait for user response (see UIRESUME)
% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.
function varargout = DiracGUI_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;

% --- Executes on button press in countingBox.
function countingBox_Callback(hObject, eventdata, handles)
% hObject    handle to countingBox (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of countingBox
if get(hObject,'Value') == true;
    count = true;
else
    count = false
end

% --- Executes on button press in avgBox.
function avgBox_Callback(hObject, eventdata, handles)
% hObject    handle to avgBox (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of avgBox
if get(hObject,'Value')== true
    avg = true;
else
    avg = false;
end

function chanAThresh_Callback(hObject, eventdata, handles)
% hObject    handle to chanAThresh (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 chanAThresh as text
%        str2double(get(hObject,'String')) returns contents of chanAThresh as a double
chanAThreshhold = str2num(get(hObject,'String'))

% --- Executes during object creation, after setting all properties.
function chanAThresh_CreateFcn(hObject, eventdata, handles)
% hObject    handle to chanAThresh (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

function chanBThresh_Callback(hObject, eventdata, handles)
% hObject    handle to chanBThresh (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 chanBThresh as text
%        str2double(get(hObject,'String')) returns contents of chanBThresh as a double
chanBThreshhold = str2num(get(hObject,'String'))

% --- Executes during object creation, after setting all properties.
function chanBThresh_CreateFcn(hObject, eventdata, handles)
% hObject    handle to chanBThresh (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

function chanCThresh_Callback(hObject, eventdata, handles)
% hObject    handle to chanCThresh (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 chanCThresh as text
%        str2double(get(hObject,'String')) returns contents of chanCThresh as a double
chanCThreshhold = str2num(get(hObject,'String'))

% --- Executes during object creation, after setting all properties.
function chanCThresh_CreateFcn(hObject, eventdata, handles)
% hObject    handle to chanCThresh (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

function chanDThresh_Callback(hObject, eventdata, handles)
% hObject    handle to chanDThresh (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 chanDThresh as text
%        str2double(get(hObject,'String')) returns contents of chanDThresh as a double
chanDThreshold = str2num(get(hObject,'String'))

% --- Executes during object creation, after setting all properties.
function chanDThresh_CreateFcn(hObject, eventdata, handles)
% hObject    handle to chanDThresh (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

% --- Executes on button press in chanA.
function chanA_Callback(hObject, eventdata, handles)
% hObject    handle to chanA (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of chanA
if get(hObject,'Value') == true
    channelAEnabled = true;
else
    channelAEnabled = false;
end

% --- Executes on button press in chanB.
function chanB_Callback(hObject, eventdata, handles)
% hObject    handle to chanB (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of chanB
if get(hObject,'Value') == true
    channelBEnabled = true;
else
    channelBEnabled = false;
end

% --- Executes on button press in chanC.
function chanC_Callback(hObject, eventdata, handles)
% hObject    handle to chanC (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of chanC
if get(hObject,'Value') == true
    channelCEnabled = true;
else
    channelCEnabled = false;
end

% --- Executes on button press in chanD.
function chanD_Callback(hObject, eventdata, handles)
% hObject    handle to chanD (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of chanD
if get(hObject,'Value') == true
    channelDEnabled = true;
else
    channelDEnabled = false;
end

% --- Executes on button press in showImages.
function showImages_Callback(hObject, eventdata, handles)
% hObject    handle to showImages (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of showImages
if get(hObject,'Value') == true
    showImages = true;
else
    showImages = false;
end

% --- Executes on button press in saveRaw.
function saveRaw_Callback(hObject, eventdata, handles)
% hObject    handle to saveRaw (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of saveRaw

if get(hObject,'Value') == true
    saveRaw = true;
else
    saveRaw = false;
end

function saveLocation_Callback(hObject, eventdata, handles)
% hObject    handle to saveLocation (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 saveLocation as text
%        str2double(get(hObject,'String')) returns contents of saveLocation as a double

% --- Executes during object creation, after setting all properties.
function saveLocation_CreateFcn(hObject, eventdata, handles)
% hObject    handle to saveLocation (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end
filePath = get(hObject,'String');

function sweepsPerLine_Callback(hObject, eventdata, handles)
% hObject    handle to sweepsPerLine (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 sweepsPerLine as text
%        str2double(get(hObject,'String')) returns contents of sweepsPerLine as a double
sweepsPerLine = str2num(get(hObject,'String'));
guidata(hObject,handles)

% --- Executes during object creation, after setting all properties.
function sweepsPerLine_CreateFcn(hObject, eventdata, handles)
% hObject    handle to sweepsPerLine (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

% --- Executes on button press in initAlazar.
function initAlazar_Callback(hObject, eventdata, handles)
% hObject    handle to initAlazar (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
configureAlazar();

% --- Executes on button press in acquireData.
function acquireData_Callback(hObject, eventdata, handles)
% hObject    handle to acquireData (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

runDIRAC(sweepsPerLine, ChannelAEnabled, ChannelBEnabled, ChannelCEnabled, ChannelDEnabled, filePath, saveRaw, showImages, count, chanAThreshhold, chanBThreshhold, chanCThreshhold, chanDThreshhold)

Answer 1

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.28s.29.3F