The following constants can be used anywhere in your code in place of the actual values:
| Constant | Value | Description |
| vbFormControlMenu | 0 | The user chose the Close command from the Control menu on the form. |
| vbFormCode | 1 | The Unload statement is invoked from code. |
| vbAppWindows | 2 | The current Microsoft Windows operating environment session is ending. |
| vbAppTaskManager | 3 | The Windows Task Manager is closing the application. |