模拟桌面刷新代码

Private Declare Function PostMessage Lib "user32" Alias "PostMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long


Private Declare Function FindWindowEx Lib "user32" _
    Alias "FindWindowExA" (ByVal hWnd1 As Long, _
    ByVal hWnd2 As Long, ByVal lpsz1 As String, _
    ByVal lpsz2 As String) As Long
    Const WM_KEYDOWN = &H100

Public Sub RefreshDesktop()
    Dim DeskWin As Long
    DeskWin = FindWindowEx(0&, 0&, "Progman", vbNullString)
    DeskWin = FindWindowEx(DeskWin, 0&, "SHELLDLL_DefView", vbNullString)
    DeskWin = FindWindowEx(DeskWin, 0&, "SysListView32", vbNullString)
    PostMessage DeskWin, WM_KEYDOWN, &H74, &H3F0001
End Sub