Re: Why several ImageJ instances?

Posted by Rasband, Wayne (NIH/NIMH) [E] on Feb 06, 2011; 8:00am
URL: http://imagej.273.s1.nabble.com/Why-several-ImageJ-instances-tp3685782p3685783.html

On Feb 5, 2011, at 3:53 PM, Norbert Vischer wrote:

> I made some tests on Windows XP and found following:
>
> Each time I double-click the ImageJ microscope icon, a new instance of ImageJ is opened, painting another ImageJ main window exactly on the top of the previous. This is also true if I check Edit>Options>Misc..>Run Single Instance Listener.

The "Run single instance listener" option in Edit>Options>Misc.. should work as expected in the 1.45a8 daily build.

-wayne

> ImageJ seems to be an exception; I cannot reproduce this with other (Java)applications. ImageJ on the Mac behaves well.
>
> I think that having the same application open more than once creates a lot of confusion (multiplied by the number of students in an image processing course).
>
> I also wonder why the "Single Instance" checkbox is not on by default (so at least dragging an image onto the microscope icon would behave well).
>
> Wouldn't it be better to avoid more than one instances at all?
>
> Norbert Vischer
> Centre for Advanced Microscopy
> University of Amsterdam
> Netherlands