Yamaha CS-700 Operation Manual page 76

Return Values:
Value Description
-1 General error
0 Success
1 No device connected
2 Failed authentication
Event Types:
Type Description
0xFF
Device disconnected
devDetach
Description: Disconnect session.
Syntax:
EXPORT void __stdcall devDetach(void);
Return Values:
Value Description
General error
-1
0 Success
isConnected
Description: Get the USB connection status.
Syntax:
EXPORT int __stdcall isConnected(void);
Return Values:
Value Description
-1 General error
0 Not connected
1 Connected HID
Connected Bulk
2
76