| scenes | Scenes that should be saved if they are modified. |
bool Returns true if the user clicked Save or Don't Save to indicate that that it is ok to close the input scenes after the dialog closes. Returns false if the user clicked Cancel to abort.
Asks whether the modfied input Scenes should be saved.
In some cases, you might want to call this before opening another Scene or creating a new Scene. A return value of true indicates that you may continue. A return value of false indicates that the user cancelled the operation and you should not Open another Scene.