Alexei,
When you create a GUI with GUIDE, you always have two files generated
untitled.m % script
untitled.fig % figure object
the way you open a gui generated by guide is by running the mfile. this mfile will open the fig file and initialize it. and then you can play with it.
if you open directly the .fig, you get the figure and the visible buttons, but most of the time it will crash because your interface is not initialized (it depends of what you code).
the initialization is usually happening in the OpeningFcn of the generated mfile.
% --- Executes just before untitled is made visible.
function untitled_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 untitled (see VARARGIN)
% Choose default command line output for untitled
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes untitled wait for user response (see UIRESUME)
% uiwait(handles.figure1);
see in the generated code % --- Executes just before untitled is made visible.
it does mean that this portion of code is executed before the figure is made visible
and the line
guidata(hObject, handles);
is the one which updates all your buttons (and their callbacks,and...).
And so, in the openingFcn, you can add any code you might want to be executed when opening the gui.
but if are a beginner, try to not mess with the code, especially the first part
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @untitled_OpeningFcn, ...
'gui_OutputFcn', @untitled_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
do not modify it, until you don't fully understand the way it works.
