The break command specifies a key to abort a command that was invoked using the wait flag. This command is an MCI system command; it is interpreted directly by MCI.
One of the following flags:
on virtual key code
Specifies the key that aborts a command that was started using the
wait flag.
off
Disables the current break key.
Returns zero if successful
or an error otherwise.
When the break key is enabled and the user presses the key identified by the virtual-key code the device returns control to the application. If possible, the command continues execution.
The following command sets F2 as the break key for the mysound device:
break mysound on 113