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Dicas
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Visual Basic (Forms/MDI)
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Título da Dica: Minimizar e Restaurar todas as janelas
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Postada em 10/7/2002 por Minkacha
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
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_COMMAND As Long = &H111
Private Const MIN_ALL As Long = 419
Private Const MIN_ALL_UNDO As Long = 416
Public Sub MinimizeAll()
Dim lngHwnd As Long
lngHwnd = FindWindow("Shell_TrayWnd", vbNullString)
Call PostMessage(lngHwnd, WM_COMMAND, MIN_ALL, 0&)
End Sub
Public Sub RestoreAll()
Dim lngHwnd As Long
lngHwnd = FindWindow("Shell_TrayWnd", vbNullString)
Call PostMessage(lngHwnd, WM_COMMAND, MIN_ALL_UNDO, 0&)
End Sub
Exemplo:
Adicione dois botões(cmdMin, cmdRestore)
Private Sub cmdMin_Click()
MinimizeAll
End Sub
Private Sub cmdRestore_Click()
RestoreAll
End Sub
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