OUVRIR UNE APPLI EN .EXE DANS UNE FORM EN VB6

'Dans un module :

Public Const GW_HWNDNEXT = 2
Public Declare Function SetParent Lib "user32" (ByVal hWndChild As Long, _
                        ByVal hWndNewParent As Long) As Long
Public Declare Function GetParent Lib "user32" (ByVal hWnd As Long) As Long
Public Declare Function GetWindow Lib "user32" (ByVal hWnd As Long, _
  ByVal wCmd As Long) As Long
Public Declare Function FindWindow Lib "user32" Alias "FindWindowA" _
  (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Public Declare Function GetWindowThreadProcessId Lib "user32" _
  (ByVal hWnd As Long, lpdwprocessid As Long) As Long
Function ProcIDFromWnd(ByVal hWnd As Long) As Long
   Dim idProc As Long
   GetWindowThreadProcessId hWnd, idProc
   ProcIDFromWnd = idProc
End Function
Function GetWinHandle(hInstance As Long) As Long
   Dim tempHwnd As Long
   tempHwnd = FindWindow(vbNullString, vbNullString)
   Do Until tempHwnd = 0
      If GetParent(tempHwnd) = 0 Then
         If hInstance = ProcIDFromWnd(tempHwnd) Then
            GetWinHandle = tempHwnd
            Exit Do
         End If
      End If
      tempHwnd = GetWindow(tempHwnd, GW_HWNDNEXT)
   Loop
End Function


'Dans la fenêtre mère :

Private Sub MDIForm_Load()
    Dim hInst As Long, hWndApp As Long
    hInst = Shell("notepad.exe")
    hWndApp = GetWinHandle(hInst)
    SetParent hWndApp, Me.hWnd
End Sub


'Bon courage et bonne chance