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Tip of the Day
Language: VB4/32,VB5,VB6
Expertise: Intermediate
Aug 5, 2000

PressVirtKey - Press and/or release any key

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
Francesco Balena
 
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