# how to make the same window width/level at MPR

**URL:** https://discourse.vtk.org/t/how-to-make-the-same-window-width-level-at-mpr/1638
**Category:** Support
**Created:** [August 23, 2019, 1:51am UTC](https://discourse.vtk.org/t/how-to-make-the-same-window-width-level-at-mpr/1638 "2019-08-23T01:51:10Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![pingdan](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/p/22d042/32.png) [@pingdan](https://discourse.vtk.org/u/pingdan)
#### Post date: [August 23, 2019, 1:51am UTC](https://discourse.vtk.org/t/how-to-make-the-same-window-width-level-at-mpr/1638/1 "2019-08-23T01:51:10Z")

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I can get MPR views use vtkImagePlaneWidget vtkResliceCursorWidget and so on. I can through SetInteractorStyle function to set mouse event. when I change one of the views’s window width/level with drag mouse, I wish the other two views change w/l at the same time. But I can’t capture the change w/l message and add my code. how can I achieve my idea?

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### Author: ![pingdan](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/p/22d042/32.png) [@pingdan](https://discourse.vtk.org/u/pingdan)
#### Post date: [August 23, 2019, 5:10am UTC](https://discourse.vtk.org/t/how-to-make-the-same-window-width-level-at-mpr/1638/2 "2019-08-23T05:10:32Z")

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WindowLevelEvent, I find it