---
title: "BitmapChangedEventArgs Class"
canonical: https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_BitmapChangedEventArgs.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/)

# BitmapChangedEventArgs Class
 
Provides data for post-changing events of the [Bitmap](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Bitmap.htm.md) class.
 
**Namespace:** [Aurigma.GraphicsMill](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```
Public Class BitmapChangedEventArgs _Inherits EventArgs
```
 
```csharp
public class BitmapChangedEventArgs : EventArgs
```
 
## Remarks
  
This class is used by such events as:
 
- [Changed](https://www.graphicsmill.com/docs/gm5/E_Aurigma_GraphicsMill_Bitmap_Changed.htm.md)
- [Redone](https://www.graphicsmill.com/docs/gm5/E_Aurigma_GraphicsMill_Bitmap_Redone.htm.md)
- [Undone](https://www.graphicsmill.com/docs/gm5/E_Aurigma_GraphicsMill_Bitmap_Undone.htm.md)

This class contains single property [Change](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_BitmapChangedEventArgs_Change.htm.md) which specifies what action did change the bitmap. All possible change actions are described with [BitmapChange](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_BitmapChange.htm.md) enumeration.
 
## Inheritance Hierarchy
  
- [System.Object](http://msdn2.microsoft.com/en-us/e5kfa45b)
    - [System.EventArgs](http://msdn2.microsoft.com/en-us/118wxtk3)
        - Aurigma.GraphicsMill.BitmapChangedEventArgs
 
## Thread Safety
 Static members of this type are safe for multi-threaded operations. Instance members of this type are not safe for multi-threaded operations.
   
## See Also

### Reference

- [BitmapChangedEventArgs Members](https://www.graphicsmill.com/docs/gm5/AllMembers_T_Aurigma_GraphicsMill_BitmapChangedEventArgs.htm.md)
- [Aurigma.GraphicsMill Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill.htm.md)