---
title: "RectangleRubberband..::.RectangleChanging Event"
canonical: https://www.graphicsmill.com/docs/gm5/E_Aurigma_GraphicsMill_WinControls_RectangleRubberband_RectangleChanging.htm
product: "Graphics Mill 5.5 for .NET"
---

This documentation is for the old version. [Go to the latest Graphics Mill docs](https://www.graphicsmill.com/docs/gm/)

# RectangleRubberband.RectangleChanging Event
 
Fires during the rubberband rectangle modification (before the mouse button is released).
 
**Namespace:** [Aurigma.GraphicsMill.WinControls](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_WinControls.htm.md)
 **Assembly:** Aurigma.GraphicsMill.WinControls (in Aurigma.GraphicsMill.WinControls.dll)
 
## Syntax
  
```
<BrowsableAttribute(True)> _
Public Event RectangleChanging As RectangleEventHandler
```
 
```csharp
[BrowsableAttribute(true)]
public event RectangleEventHandler RectangleChanging
```
 
## Remarks
 The [RectangleEventArgs](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_RectangleEventArgs.htm.md) data can be used to update the properties of the rectangle being modified.
   
## See Also

### Reference

- [RectangleRubberband Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_RectangleRubberband.htm.md)
- [Aurigma.GraphicsMill.WinControls Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_WinControls.htm.md)