Declare Function FindWindow Lib "user32" Alias "FindWindowA" _
(ByVal lpClassName As Any, ByVal lpWindowName As String) As Long
Declare Function SetActiveWindow Lib "user32" _
(ByVal hwnd As Long) As Long
Declare Function ShowWindow Lib "user32" _
(ByVal hwnd As Long, ByVal nCmdShow As Long) As Long
If App.PrevInstance = True Then
MsgBox sExit, vbCritical, "提示..."
If FindWindow(0&, "主窗体名称") > 0 Then
AppActivate "主窗体名称
ShowWindow FindWindow(0&, "主窗体名称"), 9
End If
End
End If