Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Const WM_KEYUP = &H101
Const WM_KEYDOWN = &H100
Private Sub Form_Load()
Dim i As Integer
For i = 1 To 100
ListView1.ListItems.Add , , Rnd
Next
End Sub
Private Sub Timer1_Timer()
SendMessage ListView1.hwnd, WM_KEYDOWN, &H28, &H0
SendMessage ListView1.hwnd, WM_KEYUP, &H28, &H0 '这句可以不加
End Sub