Hello,
Mac OSX 10.4
I would like my app to have only one window open at any time, e.g. :-
if one window is already open, double-clicking on another file of that app will
not open a new window for that file, or
clicking new in the File menu do not open a new window.
Do I have to use a mutex to do that or is there a simpler way?
Thanks.
Lennox.
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