C# Definition:

[StructLayout(LayoutKind.Sequential)]
public struct MSLLHOOKSTRUCT
{
    public POINT pt;
    public int mouseData;
    public int flags;
    public int time;
    public IntPtr dwExtraInfo;
}

VB.NET Definition:

<StructLayout(LayoutKind.Sequential)> _
Public Structure MSLLHOOKSTRUCT
    Public pt As POINT
    Public mouseData As Integer
    Public flags As MSLLHOOKSTRUCTFlags
    Public time As UInt32
    Public dwExtraInfo As IntPtr
End Structure

<Flags()> Public Enum MSLLHOOKSTRUCTFlags As Integer LLMHFINJECTED = 1End Enum

User-Defined Field Types:

POINT

Notes:

None.