How can I implement singleton behavior for a programmtically created GUI?
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I am creating a GUI programmatically. However I require the singleton GUI behavior for my project. (i.e. if the user tries to run a second instance of my program it only brings the current singleton into focus and does not destroy any objects).
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MathWorks Support Team
2009-6-27
The singleton behavior can be implemented by querying for the tag of the GUI under the root object. If the GUI has been launched , the GUI will be a child of the root object. If the GUI has not been launched, it will not be found and the GUI can be launched.
The following code demonstrates this
function my_gui()
%Search if the figure exists
h = findall(0,'tag','my_gui');
if (isempty(h))
%Launch the figure
figHandle = figure('tag','my_gui');
plot(rand(4,4));
set(figHandle,'handlevisibility','callback');
else
%Figure exists so bring Figure to the focus
figure(h);
end;
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2009-6-27
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