Attaching to existing SW session and then unloading SW from Task Manager

Hello,

I want my application to attach to the EXISTING running SW session.
With the following code bellow this is what happens:

If SW is NOT running, my code OPENS a new SW session
If SW is running, my code (sometimes) STILL OPENS a new SW session

.....................Questions........................

1.- How can I force the Task Manager to unload SW from the memory?
2.- How can I modify my code so the behaviour is the following...?

If SW is NOT running -> do wgatever (print a string, show an error
msg,... but DO NOT open a new SW session

If SW is tunning -> attach to current SW session


ps: I'm using Visual.NET and SW2003 Student Edition

Thank you,

JK

www.juliusklein.tk


'------------- My Code -------------------

Private Sub MyForm_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load

swApp As SldWorks.SldWorks

'START connection to SW session*************************
swApp = Nothing
'swApp = GetObject(, "Sldworks.Application") '??????????????????
swApp = CreateObject("SldWorks.Application")

If swApp Is Nothing Then
Call MsgBox("connection failed, (try opening SW)", vbOKOnly,
"Error")
End
Else 'swApp Is Not Nothing
swApp.Visible = True
swApp.UserControl = True
On Error Resume Next ' Disables VB's implicit error on QI
End If
Me.Text = "Type Helper (swDocType)"
'END connection to SW session*************************

End Sub

 

'swApp = GetObject(, "Sldworks.Application") '??????????????????

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This code is working without the SET command ?


BTW, both will work (with SET) under different circumstances:
try the code below:

'------------------------------------------------------------------

' attach to existing SWX
On Error Resume Next ' try attachiung to existing SWX
Set swapp = GetObject(, "Sldworks.Application")
On Error GoTo 0

' Start new SWX if not running
If swapp Is Nothing Then
Set swapp = GetObject("", "Sldworks.Application")
End If

'------------------------------------------------------------------

 

The problem is that .NET is not running garbage collection on the COM object
because it doesn't know how to.

After you call swApp.exit, you need to run this line of code:

system.runtime.marshal.releasecomobject(swApp)

This will force the GC and release the COM object.

I would also use the GetObject line b/c if SW is running, it will get a
handle to it and if not, it will launch SW. You could also do Dim swApp as
sldworks.sldworks=new sldworks.sldworks.

Evan