| DirectX SDK | 
The DirectDraw7.GetDeviceIdentifier method returns a DirectDrawIdentifier object filled with information about the DirectDraw device driver.
object.GetDeviceIdentifier( _ 
    flags As CONST_DDDEVICEIDFLAGS _ )
    As DirectDrawIdentifier
If the method succeeds, it returns a DirectDrawIdentifier object.
If the method fails, it raises an error, and Err.Number is set.