[Ctk-developers] Observing signals in a CTK widget

[Steve Pieper]

Hi Jonathan -

That widget emits a signal when changed [1], which you can get with the
coordinates property [2].  In python this is available as a string, so
you'll need to parse that to make use of the values.

Here's an example that shows a dialog when the values are changed.  You can
just paste it into the slicer python console.

c = ctk.ctkCoordinatesWidget()
c.show()
c.connect('coordinatesChanged(double*)', lambda cc:
qt.QMessageBox.information(None, 'coordinates', c.coordinates))


HTH,
Steve


[1]
http://www.commontk.org/docs/html/classctkCoordinatesWidget.html#a0de7bec85eadf564e911d5c97679f4b9

[2]
http://www.commontk.org/docs/html/classctkCoordinatesWidget.html#af5509939618967dfd9515dc7637990c7

On Tue, Dec 8, 2015 at 8:00 PM, Perdomo, Jonathan <
jonathan_perdomo at med.unc.edu> wrote:

> Hello everyone,
>
> I hope this question has not been asked before, but I am just trying to
> add an observer to my CTK coordinates widget, so that I know whether or not
> the values have been modified by the user. I am writing this in Python as
> an extension for 3D Slicer. Any example of how to add an observer to a
> widget in Python would be very helpful, as well as any sample code you may
> have, or resources you know of!
>
> Thank you for your help,
>
> Jonathan Perdomo
>
>
> _______________________________________________
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>
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