# Place the splineWidget to complete the judgment
**URL:** https://discourse.vtk.org/t/place-the-splinewidget-to-complete-the-judgment/8782
**Category:** Web
**Created:** [June 22, 2022, 10:16am UTC](https://discourse.vtk.org/t/place-the-splinewidget-to-complete-the-judgment/8782 "2022-06-22T10:16:12Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@654545342](https://discourse.vtk.org/u/654545342)
#### Post date: [June 22, 2022, 10:16am UTC](https://discourse.vtk.org/t/place-the-splinewidget-to-complete-the-judgment/8782/1 "2022-06-22T10:16:12Z")
How can I tell that the widget placement is done with an indeterminate number of handles like splineWidget. distanceWidget can be judged by the length of handleList.
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### Author:  [@finetjul](https://discourse.vtk.org/u/finetjul)
#### Post date: [June 22, 2022, 10:38am UTC](https://discourse.vtk.org/t/place-the-splinewidget-to-complete-the-judgment/8782/2 "2022-06-22T10:38:43Z")
I’m not sure to understand your question, can you please reformulate ?
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### Author:  [@654545342](https://discourse.vtk.org/u/654545342)
#### Post date: [June 22, 2022, 10:52am UTC](https://discourse.vtk.org/t/place-the-splinewidget-to-complete-the-judgment/8782/3 "2022-06-22T10:52:15Z")
In distanceWidget, I can judge by judging the length of handleList in `widgetFactory.getWidegtState().onModified()`, this widget is placed. In splineWidget, the length of HandleList cannot be used to determine whether the placement is complete
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### Author:  [@finetjul](https://discourse.vtk.org/u/finetjul)
#### Post date: [June 22, 2022, 1:47pm UTC](https://discourse.vtk.org/t/place-the-splinewidget-to-complete-the-judgment/8782/4 "2022-06-22T13:47:18Z")
Indeed, a distance is made of 2 points. A spline is made of as many points as possible.
You can observe the Widget EndInteractionEvent instead of the widgetState ModifiedEvent.