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5.0

How do I run a dll in a seperate process?

Asked by Thrasymachus in Visual Basic Programming

Tags: dll

I have two VB6 projects. the first one is a exe (deviceManager.exe) and the second one is a dll (ersptdev.dll). Currently the EXE calls the dll like this:

---------------------------------------------------
Public Function PrinterStatus(ByVal msgCurrent As MSMQMessage, ByVal strDevice As String) As String
On Error GoTo Err_HandlePrintJob

Dim q As MSMQQueue
Dim qi As MSMQQueueInfo
Dim msgPrinter As MSMQMessage

'to locate the existing queues
Dim objqiSet As MSMQQueue
Dim objQuery As MSMQQuery

Dim PlotControl As Object
Dim lngPCValue As Long
Set PlotControl = CreateObject("ERSPtDev.c" & strDevice)

'Send Job to ERSPtDev to do the work
Call PlotControl.iPrintDevice_PrintJob(msgCurrent.Body, msgCurrent.Id)
ExitRoutine:
On Error Resume Next
Set PlotControl = Nothing
Exit Function

Err_HandlePrintJob:

[handling stuff removed]

Resume ExitRoutine
End Function
-------------------------------------------------------------------

What I want to do is make this line:
Call PlotControl.iPrintDevice_PrintJob(msgCurrent.Body, msgCurrent.Id)
run in an independent process. I am not conserned with any return values, and it may take a long time for it to finish. I just want to let ersptdev.dll do it's thing and let DeviceManager.exe continue doing its thing.

Also there is a possibliity that if Devicemanager.exe is able to continue doing it's thing it may call ersptdev again, in which case I would expect both 'threads' to run Simultaneously and independently. Can this be done and if so how?

Thanks for you help. I can provide further details if needed and I have the source code for both projects.

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20091021-EE-VQP-81

How do I run a dll in a seperate process?

Asked by Thrasymachus in Visual Basic Programming

Tags: dll

About this solution