Send Function key to a game

Private Declare Sub keybd_event Lib "user32" (ByVal bVk As Byte, ByVal bScan As Byte, ByVal dwFlags As UInteger, ByVal dwExtraInfo As UInteger)
    Const KEYEVENTF_KEYUP = &H2

    <DllImport("user32.dll", SetLastError:=True)> _
    Private Shared Function GetForegroundWindow() As IntPtr
    End Function

    <DllImport("user32.dll", SetLastError:=True)> _
    Private Shared Function GetWindowThreadProcessId(ByVal hwnd As IntPtr, _
                      ByRef lpdwProcessId As Integer) As Integer
    End Function

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        Timer1.Enabled = True

    End Sub

    Private Sub press(ByVal mykey As Keys)

        keybd_event(CByte(mykey), 0, 0, 0)
        keybd_event(CByte(mykey), 0, KEYEVENTF_KEYUP, 0)

    End Sub

    Private Sub Timer1_Tick(sender As System.Object, e As System.EventArgs) Handles Timer1.Tick

       
        Dim fgWin = GetForegroundWindow()
        Dim fgPid As New Integer()
        GetWindowThreadProcessId(fgWin, fgPid)

        Dim proc = System.Diagnostics.Process.GetProcessById(fgPid)

        If (proc.ProcessName = "bout.dat") Then
           
            press(Keys.F8)

        End If

    End Sub

Imports System.Runtime.InteropServices

Public NotInheritable Class InputHelper
    Private Sub New()
    End Sub

#Region "Methods"
#Region "PressKey()"
    ''' <summary>
    ''' Virtually presses a key.
    ''' </summary>
    ''' <param name="Key">The key to press.</param>
    ''' <param name="HardwareKey">Whether or not to press the key using its hardware scan code.</param>
    ''' <remarks></remarks>
    Public Shared Sub PressKey(ByVal Key As Keys, Optional ByVal HardwareKey As Boolean = False)
        If HardwareKey = False Then
            InputHelper.SetKeyState(Key, False)
            InputHelper.SetKeyState(Key, True)
        Else
            InputHelper.SetHardwareKeyState(Key, False)
            InputHelper.SetHardwareKeyState(Key, True)
        End If
    End Sub
#End Region

#Region "SetKeyState()"
    ''' <summary>
    ''' Virtually sends a key event.
    ''' </summary>
    ''' <param name="Key">The key of the event to send.</param>
    ''' <param name="KeyUp">Whether to push down or release the key.</param>
    ''' <remarks></remarks>
    Public Shared Sub SetKeyState(ByVal Key As Keys, ByVal KeyUp As Boolean)
        Key = ReplaceBadKeys(Key)

        Dim KeyboardInput As New KEYBDINPUT With {
            .wVk = Key,
            .wScan = 0,
            .time = 0,
            .dwFlags = If(KeyUp, KEYEVENTF.KEYUP, 0),
            .dwExtraInfo = IntPtr.Zero
        }

        Dim Union As New INPUTUNION With {.ki = KeyboardInput}
        Dim Input As New INPUT With {
            .type = INPUTTYPE.KEYBOARD,
            .U = Union
        }

        SendInput(1, New INPUT() {Input}, Marshal.SizeOf(GetType(INPUT)))
    End Sub
#End Region

#Region "SetHardwareKeyState()"
    ''' <summary>
    ''' Virtually sends a key event using the key's scan code.
    ''' </summary>
    ''' <param name="Key">The key of the event to send.</param>
    ''' <param name="KeyUp">Whether to push down or release the key.</param>
    ''' <remarks></remarks>
    Public Shared Sub SetHardwareKeyState(ByVal Key As Keys, ByVal KeyUp As Boolean)
        Key = ReplaceBadKeys(Key)

        Dim KeyboardInput As New KEYBDINPUT With {
            .wVk = 0,
            .wScan = MapVirtualKeyEx(CUInt(Key), 0, GetKeyboardLayout(0)),
            .time = 0,
            .dwFlags = KEYEVENTF.SCANCODE Or If(KeyUp, KEYEVENTF.KEYUP, 0),
            .dwExtraInfo = IntPtr.Zero
        }

        Dim Union As New INPUTUNION With {.ki = KeyboardInput}
        Dim Input As New INPUT With {
            .type = INPUTTYPE.KEYBOARD,
            .U = Union
        }

        SendInput(1, New INPUT() {Input}, Marshal.SizeOf(GetType(INPUT)))
    End Sub
#End Region

#Region "ReplaceBadKeys()"
    ''' <summary>
    ''' Replaces bad keys with their corresponding VK_* value.
    ''' </summary>
    ''' <remarks></remarks>
    Private Shared Function ReplaceBadKeys(ByVal Key As Keys) As Keys
        Dim ReturnValue As Keys = Key

        If ReturnValue.HasFlag(Keys.Control) Then
            ReturnValue = (ReturnValue And Not Keys.Control) Or Keys.ControlKey 'Replace Keys.Control with Keys.ControlKey.
        End If

        If ReturnValue.HasFlag(Keys.Shift) Then
            ReturnValue = (ReturnValue And Not Keys.Shift) Or Keys.ShiftKey 'Replace Keys.Shift with Keys.ShiftKey.
        End If

        If ReturnValue.HasFlag(Keys.Alt) Then
            ReturnValue = (ReturnValue And Not Keys.Alt) Or Keys.Menu 'Replace Keys.Alt with Keys.Menu.
        End If

        Return ReturnValue
    End Function
#End Region
#End Region

#Region "WinAPI P/Invokes"
    <DllImport("user32.dll", SetLastError:=True)>
    Private Shared Function SendInput(ByVal nInputs As UInteger, <MarshalAs(UnmanagedType.LPArray)> ByVal pInputs() As INPUT, ByVal cbSize As Integer) As UInteger
    End Function

    <DllImport("user32.dll")> _
    Private Shared Function MapVirtualKeyEx(uCode As UInteger, uMapType As UInteger, dwhkl As IntPtr) As UInteger
    End Function

    <DllImport("user32.dll")> _
    Private Shared Function GetKeyboardLayout(idThread As UInteger) As IntPtr
    End Function

#Region "Enumerations"
    Private Enum INPUTTYPE As UInteger
        MOUSE = 0
        KEYBOARD = 1
        HARDWARE = 2
    End Enum

    <Flags()> _
    Private Enum KEYEVENTF As UInteger
        EXTENDEDKEY = &H1
        KEYUP = &H2
        SCANCODE = &H8
        UNICODE = &H4
    End Enum
#End Region

#Region "Structures"
    <StructLayout(LayoutKind.Explicit)> _
    Private Structure INPUTUNION
        <FieldOffset(0)> Public mi As MOUSEINPUT
        <FieldOffset(0)> Public ki As KEYBDINPUT
        <FieldOffset(0)> Public hi As HARDWAREINPUT
    End Structure

    Private Structure INPUT
        Public type As Integer
        Public U As INPUTUNION
    End Structure

    Private Structure MOUSEINPUT
        Public dx As Integer
        Public dy As Integer
        Public mouseData As Integer
        Public dwFlags As Integer
        Public time As Integer
        Public dwExtraInfo As IntPtr
    End Structure

    Private Structure KEYBDINPUT
        Public wVk As UShort
        Public wScan As Short
        Public dwFlags As UInteger
        Public time As Integer
        Public dwExtraInfo As IntPtr
    End Structure

    Private Structure HARDWAREINPUT
        Public uMsg As Integer
        Public wParamL As Short
        Public wParamH As Short
    End Structure
#End Region
#End Region



End Class

 Private Sub Timer1_Tick(sender As System.Object, e As System.EventArgs) Handles Timer1.Tick
       
        Dim fgWin = GetForegroundWindow()
        Dim fgPid As New Integer()
        GetWindowThreadProcessId(fgWin, fgPid)

        Dim proc = System.Diagnostics.Process.GetProcessById(fgPid)

        If (proc.ProcessName = "bout.dat") Then
           
            InputHelper.PressKey(Keys.F8, True)

        End If

    End Sub

        [DllImport("user32.dll", SetLastError = true)]
        private static extern bool PostMessage(IntPtr hWnd, uint Msg, int wParam, int lParam);

private void Timer1_Tick(object sender, EventArgs e)
       
            const int WM_KEYDOWN = 0x100;
            const int WM_KEYUP = 0x101;

            string processName = "bout.dat";
            Process[] processList = Process.GetProcesses();

            foreach (Process p in processList)
            {
                if (p.ProcessName.Equals(processName))
                {
                    IntPtr hWnd = p.MainWindowHandle;
                    PostMessage(hWnd, WM_KEYDOWN, 0x77, 0x420001);
                    Thread.Sleep(2);
                    PostMessage(hWnd, WM_KEYUP, 0x77, 0x420001);
                }
            }
        }