Private Declare Function PostMessage Lib "user32" Alias "PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Private Const WM_CLOSE = &H10
Private Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long
Private Declare Function ShowWindow Lib "user32" (ByVal hwnd As Long, ByVal nCmdShow As Long) As Long
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) 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

Private Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Private Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long
Private Const SW_SHOWNORMAL = 1
Private Const SWP_SHOWWINDOW = &H40
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
Private Const BM_CLICK = &HF5
Private Declare Function MoveWindow Lib "user32" (ByVal hwnd As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal bRepaint As Long) As Long

Private Function GetHwnd(buttonHwnd As Long, MenuHwnd As Long) As Boolean
Dim LhWnd As Long
Dim StartMenuHwnd As Long
LhWnd = FindWindow("Shell_TrayWnd", vbNullString)
buttonHwnd = FindWindowEx(LhWnd, 0, "Button", vbNullString)
StartMenuHwnd = FindWindow("DV2ControlHost", vbNullString)
If StartMenuHwnd = 0 Then
StartMenuHwnd = FindWindow("BaseBar", vbNullString)
End If
MenuHwnd = StartMenuHwnd
End Function

Private Sub Command1_Click()
Dim hwnd As Long, bHwnd As Long
Dim myRect As RECT
GetHwnd bHwnd, hwnd
SendMessage bHwnd, BM_CLICK, 0&, 0& '开始 按钮
GetWindowRect hwnd, myRect '理论上是开始菜单,可见开始菜单其实是个“窗体”
'ShowWindow hwnd, SW_SHOWNORMAL
Print myRect.Top, myRect.Right'这个地方好象不加个操作就会有问题。在IDE下尤其明显
'SetWindowPos hwnd, 0, 200, 200, 200, 350, SWP_SHOWWINDOW
MoveWindow hwnd, 200, 200, 220, 300, True '无法获得其宽度和高度
End Sub