[RESOLVED] How do I 'wait' for ShellExecute to finish

[FunkyDexter]

woohoo, working code at last:-

Private Declare Function FindExecutable Lib "shell32.dll" Alias "FindExecutableA" (ByVal lpFile As String, ByVal lpDirectory As String, ByVal lpResult As String) As Long
Private Const SYNCHRONIZE = &H100000
Private Declare Function WaitForSingleObject Lib "kernel32" (ByVal hHandle As Long, ByVal dwMilliseconds As Long) As Long
Private Declare Function OpenProcess Lib "kernel32" (ByVal dwAccess As Long, ByVal fInherit As Integer, ByVal hObject As Long) As Long

Private Sub picSheetInner_DblClick()
    Dim strExecutable As String
    Dim lngPID As Long
    Dim lngReturn As Long
    Dim strSend As String
On Error GoTo errHandler
    strExecutable = Space$(256)
    Call FindExecutable(Mid$(mstrImagePath, InStrRev(mstrImagePath, "\") + 1), Left$(mstrImagePath, InStrRev(mstrImagePath, "\") - 1), strExecutable)
    strExecutable = Left$(strExecutable, InStr(strExecutable, vbNull) - 1)
    strSend = strExecutable & " """ & mstrImagePath & """"
    Let lngPID = Shell(strSend)
    Let lngPID = OpenProcess(SYNCHRONIZE, False, lngPID)
    Do
        Let lngReturn = WaitForSingleObject(lngPID, 0)
        DoEvents
    Loop While lngReturn <> 0
    Exit Sub
errHandler:
    Call hmferErrors.faimErrors(Err, "picSheetInner_DblClick", "frmPaper2", , gstrUserName, , App.EXEName)
    End
End Sub

Thanks to all for your help, particularly Rhino, DNA and Ellis.