| VirtualBox Main API
    | 
Notification when someone tries to change extra data for either the given machine or (if null) global extra data.  
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| Public Attributes | |
| readonly attribute wstringUUID | machineId | 
| ID of the machine this event relates to. | |
| readonly attribute wstring | key | 
| Extra data key that has changed. | |
| readonly attribute wstring | value | 
| Extra data value for the given key. | |
|  Public Attributes inherited from IEvent | |
| readonly attribute VBoxEventType | type | 
| Event type. | |
| readonly attribute IEventSource | source | 
| Source of this event. | |
| readonly attribute boolean | waitable | 
| If we can wait for this event being processed. | |
| Additional Inherited Members | |
|  Public Member Functions inherited from IVetoEvent | |
| void | addVeto (in wstring reason) | 
| Adds a veto on this event. | |
| void | isVetoed ([retval] out boolean result) | 
| If this event was vetoed. | |
| void | getVetos ([retval] out wstring[] result) | 
| Current veto reason list, if size is 0 - no veto. | |
| void | addApproval (in wstring reason) | 
| Adds an approval on this event. | |
| void | isApproved ([retval] out boolean result) | 
| If this event was approved. | |
| void | getApprovals ([retval] out wstring[] result) | 
| Current approval reason list, if size is 0 - no approvals. | |
|  Public Member Functions inherited from IEvent | |
| void | setProcessed () | 
| Internal method called by the system when all listeners of a particular event have called IEventSource::eventProcessed. | |
| void | waitProcessed (in long timeout, [retval] out boolean result) | 
| Wait until time outs, or this event is processed. | |
Notification when someone tries to change extra data for either the given machine or (if null) global extra data. 
This gives the chance to veto against changes.
{245D88BD-800A-40F8-87A6-170D02249A55} | readonly attribute wstringUUID IExtraDataCanChangeEvent::machineId | 
ID of the machine this event relates to.
Null for global extra data changes.
| readonly attribute wstring IExtraDataCanChangeEvent::key | 
Extra data key that has changed.
| readonly attribute wstring IExtraDataCanChangeEvent::value | 
Extra data value for the given key.