Visual Basic - Cómo cerrar un formulario MDI con la tecla Escape?

Hola buenas tardes!! Ya sé que parezco ignorante pero necesito de su ayuda de nuevo jajaja... Ahora cómo cierro un formulario MDI con la tecla Escape si este no tienes los eventos keydown ni la propiedad keypreview?? Ayúdame Yahir!! Porfis.

Perdón... me faltó poner que el formulario es MDI Principal.... Ya resolví el problema para cerrar los formularios MDIChild pero ahora necesito tambiém el código para el MDI Principal. Jejeje gracias por su ayuda y comprensión. =)

Hola, te paso un ejemplo que usa el api de windows RegisterHotkeys

Nota: para indicar la tecla o teclas, fijate los parámetros en la linea

ret = RegisterHotKey(Me.hWnd, &HBFFF&, 0, vbKeyEscape)

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Esto en el formulario Mdi

Private Const MOD_ALT = &H1
Private Const MOD_CONTROL = &H2
Private Const MOD_SHIFT = &H4
Private Const PM_REMOVE = &H1
Private Const WM_HOTKEY = &H312
Private Type POINTAPI
x As Long
y As Long
End Type
Private Type Msg
hWnd As Long
Message As Long
wParam As Long
lParam As Long
time As Long
pt As POINTAPI
End Type
Private Declare Function RegisterHotKey Lib "user32" (ByVal hWnd As Long, ByVal id As Long, ByVal fsModifiers As Long, ByVal vk As Long) As Long
Private Declare Function UnregisterHotKey Lib "user32" (ByVal hWnd As Long, ByVal id As Long) As Long
Private Declare Function PeekMessage Lib "user32" Alias "PeekMessageA" (lpMsg As Msg, ByVal hWnd As Long, ByVal wMsgFilterMin As Long, ByVal wMsgFilterMax As Long, ByVal wRemoveMsg As Long) As Long
Private Declare Function WaitMessage Lib "user32" () As Long
Private bCancel As Boolean
Private Sub ProcessMessages()
Dim Message As Msg

Do While Not bCancel

WaitMessage

If PeekMessage(Message, Me.hWnd, WM_HOTKEY, WM_HOTKEY, PM_REMOVE) Then

End
End If
DoEvents
Loop
End Sub


Private Sub MDIForm_Load()
Dim ret As Long
bCancel = False

ret = RegisterHotKey(Me.hWnd, &HBFFF&, 0, vbKeyEscape)


Show

ProcessMessages
End Sub

Private Sub MDIForm_Unload(Cancel As Integer)
bCancel = True
Call UnregisterHotKey(Me.hWnd, &HBFFF&)
End Sub