User`s guide

15 Examples of GUIs Created Programmatically
When the user clicks the Cancel button, its callback,
hOCancelButtonCallback, effectively deletes the icon data then
calls
uiresume. Thisenablesthecodefiletoresumeexecutionwhereit
stopped but it returns a null matrix.
function hCance lBut tonCallback(hObject, eventdata)
% Callback called when the Cancel button i s pressed
mIconCData =[];
uiresume;
delete(hMainFigure);
end
Pass Input Arguments to a GUI
Inputs to the GUI are custom property/value pairs. iconEdit allows three
such properties:
IconWidth, IconHeight,andIconFile. The names are
caseinsensitive.
Definition and Initialization of the Properties. The
iconEdit first defines
a variable
mInputArgs as varargin to accept the user input arguments.
mInputArgs = varargin; % Command line arguments when invoking
%theGUI
The iconEdit function then defines the valid custom properties in a 3-by-3
cell array.
mPropertyDefs = {... % Supported custom property/value
% pairs of this GUI
'iconwidth', @localValidateInput, 'mIconWidth';
'iconheight', @localValidateInput, 'mIconHeight';
'iconfile', @localValidateInput, 'mIconFile'};
• The first column contains the property name.
• The second column contains a function handle for the function,
localValidateInput, that validates the input property values .
• The third column is the local variable that holds the value of the property.
iconEdit then initializes the properties with default values.
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