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

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

public struct MSLLHOOKSTRUCT

Public Structure MSLLHOOKSTRUCT

    Public flags As MSLLHOOKSTRUCTFlags

Public Enum MSLLHOOKSTRUCTFlags As Int32