public delegate long DelegateStreamReadFunction(
	IntPtr handle,
	IntPtr buffer,
	long bufferSize
)

Public Delegate Function DelegateStreamReadFunction ( 
	handle As IntPtr,
	buffer As IntPtr,
	bufferSize As Long
) As Long

public delegate long long DelegateStreamReadFunction(
	IntPtr handle, 
	IntPtr buffer, 
	long long bufferSize
)

type DelegateStreamReadFunction = 
    delegate of 
        handle : IntPtr * 
        buffer : IntPtr * 
        bufferSize : int64 -> int64