| Name | Value | Description |
| OKButtonType | 0 | The message box contains an OK button. |
| OKCancelButtonType | 1 | The message box contains OK and Cancel buttons. |
| RetryCancelButtonType | 2 | The message box contains Retry and Cancel buttons. |
| YesNoButtonType | 3 | The message box contains Yes and No buttons. |
| YesNoCancelButtonType | 4 | The message box contains Yes, No, and Cancel buttons. |