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

SetNumLockKey - Set the state of the Num Lock 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

Sub SetNumLockKey(ByVal newState As Boolean)
    ' if the current state must be changed
    If CBool(GetKeyState(vbKeyNumlock)) <> newState Then
        ' programmatically press and release the NumLock key
        keybd_event vbKeyNumlock, 0, 0, 0
        keybd_event vbKeyNumlock, 0, KEYEVENTF_KEYUP, 0
    End If
End Sub
Francesco Balena
 
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