# How to show a messagebox by click on an object with Activiz

**URL:** https://discourse.vtk.org/t/how-to-show-a-messagebox-by-click-on-an-object-with-activiz/10077
**Category:** Support
**Created:** [December 5, 2022, 8:03pm UTC](https://discourse.vtk.org/t/how-to-show-a-messagebox-by-click-on-an-object-with-activiz/10077 "2022-12-05T20:03:21Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![ranrui04](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/r/8baadc/32.png) [@ranrui04](https://discourse.vtk.org/u/ranrui04)
#### Post date: [December 5, 2022, 8:03pm UTC](https://discourse.vtk.org/t/how-to-show-a-messagebox-by-click-on-an-object-with-activiz/10077/1 "2022-12-05T20:03:21Z")

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Hello!  
I wanted to popup a message box by clicking on a vtkRectangularButtonSouce or other type of object. I didn’t find any C# examples that would help. I’d appreciate it if someone could point me to the right direction.  
Thanks.