private delegate IntPtr LowLevelMouseProc(int code, WindowsMessages wParam, [In] MSLLHOOKSTRUCT lParam);

Private Delegate Function LowLevelMouseProc(ByVal code As Integer, ByVal wParam As WindowsMessages, <[In]> ByVal lParam As MSLLHOOKSTRUCT) As IntPtr

MSLLHOOKSTRUCT

public struct MSLLHOOKSTRUCT

Public Structure MSLLHOOKSTRUCT

    Public flags As MSLLHOOKSTRUCTFlags

Public Enum MSLLHOOKSTRUCTFlags As Int32

static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, WM wParam, [In]MSLLHOOKSTRUCT lParam);

Private Shared Function CallNextHookEx(ByVal hhk As IntPtr, ByVal nCode As Integer, ByVal wParam As WindowsMessages, <[In]()> ByRef lParam As MSLLHOOKSTRUCT) As IntPtr

           lParam As MSLLHOOKSTRUCT) As Long

WindowsMessages,KBDLLHOOKSTRUCT,MSLLHOOKSTRUCT