Binaryworld - PressVirtKey - Press and/or release any key ... [ VB -> Keyboard-Mouse ]

Private Declare Sub keybd_event Lib "user32" (ByVal bVk As Byte, _
  ByVal bScan As Byte, ByVal dwFlags As Long, ByVal dwExtraInfo As Long)
Private Declare Function GetKeyState Lib "user32" (ByVal nVirtKey As Long) As _
  Long
Private Const KEYEVENTF_KEYUP = &H2

' press and/or release any key, given its virtual code
'
' virtKeyCode can be any vbKey* constants, except mouse constants
' Action can be 0 or omitted (press and then release the key)
'           >0 (only press the key)
'           <0 (only release the key)

Sub PressVirtualKey(ByVal virtKeyCode As KeyCodeConstants, _
  Optional ByVal Action As Integer)
  ' press the key if the argument is 0 or greater
  If Action >= 0 Then
    keybd_event virtKeyCode, 0, 0, 0
  End If
  ' then release the key if the argument is 0 or lesser
  If Action <= 0 Then
    keybd_event virtKeyCode, 0, KEYEVENTF_KEYUP, 0
  End If
End Sub