---
title: "BaseViewer Events"
canonical: https://www.graphicsmill.com/docs/gm5/Events_T_J_GraphicsMill_BaseViewer.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/)

# BaseViewer Events
 
The [BaseViewer](https://www.graphicsmill.com/docs/gm5/T_J_GraphicsMill_BaseViewer.htm.md) type exposes the following members.
 
## Events

|   |  Name |  Description |
| --- | --- | --- |
 |  ![Public event](https://www.graphicsmill.com/docs/gm5/icons/pubevent.gif) |  [click](https://www.graphicsmill.com/docs/gm5/E_J_GraphicsMill_BaseViewer_click.htm.md) |  Fires when the control is clicked. |
 |  ![Public event](https://www.graphicsmill.com/docs/gm5/icons/pubevent.gif) |  [disposing](https://www.graphicsmill.com/docs/gm5/E_J_GraphicsMill_BaseViewer_disposing.htm.md) |   |
 |  ![Public event](https://www.graphicsmill.com/docs/gm5/icons/pubevent.gif) |  [invokingCallbackRequest](https://www.graphicsmill.com/docs/gm5/E_J_GraphicsMill_BaseViewer_invokingCallbackRequest.htm.md) |  Occurs before the callback is initiated by this control. |
 |  ![Public event](https://www.graphicsmill.com/docs/gm5/icons/pubevent.gif) |  [mouseDown](https://www.graphicsmill.com/docs/gm5/E_J_GraphicsMill_BaseViewer_mouseDown.htm.md) |  Fires when the user clicks the control with either mouse button. |
 |  ![Public event](https://www.graphicsmill.com/docs/gm5/icons/pubevent.gif) |  [mouseMove](https://www.graphicsmill.com/docs/gm5/E_J_GraphicsMill_BaseViewer_mouseMove.htm.md) |  Fires when the user moves the mouse over the control. |
 |  ![Public event](https://www.graphicsmill.com/docs/gm5/icons/pubevent.gif) |  [mouseUp](https://www.graphicsmill.com/docs/gm5/E_J_GraphicsMill_BaseViewer_mouseUp.htm.md) |  Fires when the user releases a mouse button while the mouse is over the control. |
 |  ![Public event](https://www.graphicsmill.com/docs/gm5/icons/pubevent.gif) |  [propertyChanged](https://www.graphicsmill.com/docs/gm5/E_J_GraphicsMill_BaseViewer_propertyChanged.htm.md) |   |
 |  ![Public event](https://www.graphicsmill.com/docs/gm5/icons/pubevent.gif) |  [scrolled](https://www.graphicsmill.com/docs/gm5/E_J_GraphicsMill_BaseViewer_scrolled.htm.md) |  Fires when scroll position of the control is changed. |
 |  ![Public event](https://www.graphicsmill.com/docs/gm5/icons/pubevent.gif) |  [statusChanged](https://www.graphicsmill.com/docs/gm5/E_J_GraphicsMill_BaseViewer_statusChanged.htm.md) |  Fires when status (see [status](https://www.graphicsmill.com/docs/gm5/P_J_GraphicsMill_BaseViewer_status.htm.md) property) is updated. |
 |  ![Public event](https://www.graphicsmill.com/docs/gm5/icons/pubevent.gif) |  [workspaceChanged](https://www.graphicsmill.com/docs/gm5/E_J_GraphicsMill_BaseViewer_workspaceChanged.htm.md) |  Occurs when the content of the associated workspace is replaced. |
 |  ![Public event](https://www.graphicsmill.com/docs/gm5/icons/pubevent.gif) |  [workspaceClick](https://www.graphicsmill.com/docs/gm5/E_J_GraphicsMill_BaseViewer_workspaceClick.htm.md) |  Fires when the content displayed in the control is clicked. |
 |  ![Public event](https://www.graphicsmill.com/docs/gm5/icons/pubevent.gif) |  [workspaceMouseDown](https://www.graphicsmill.com/docs/gm5/E_J_GraphicsMill_BaseViewer_workspaceMouseDown.htm.md) |  Occurs when a mouse button is clicked in the content displayed by this viewer control. |
 |  ![Public event](https://www.graphicsmill.com/docs/gm5/icons/pubevent.gif) |  [workspaceMouseMove](https://www.graphicsmill.com/docs/gm5/E_J_GraphicsMill_BaseViewer_workspaceMouseMove.htm.md) |  Fires when the user moves the mouse over the content of control. |
 |  ![Public event](https://www.graphicsmill.com/docs/gm5/icons/pubevent.gif) |  [workspaceMouseUp](https://www.graphicsmill.com/docs/gm5/E_J_GraphicsMill_BaseViewer_workspaceMouseUp.htm.md) |  Fires when the user releases a mouse button while the mouse is over the content of control. |
 |  ![Public event](https://www.graphicsmill.com/docs/gm5/icons/pubevent.gif) |  [zoomed](https://www.graphicsmill.com/docs/gm5/E_J_GraphicsMill_BaseViewer_zoomed.htm.md) |  Fires when the content is zoomed in the control. |
   
## See Also

### Reference

- [BaseViewer Class](https://www.graphicsmill.com/docs/gm5/T_J_GraphicsMill_BaseViewer.htm.md)
- [GraphicsMill Namespace](https://www.graphicsmill.com/docs/gm5/N_J_GraphicsMill.htm.md)