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start new thread helpVB6 ActiveX.dll with no windows or controls. Interfaces with a device that returns an x size byte array every x milliseconds for x counts. Sends a message to VB2005 main thread on each count. VB2005 has to start the thread and set several variables in the thread before loop starts. VB2005 then has to respond to messages and draw on screen until last count is recieved. VB2005 then stops thread. Thread will be started and stopped numerous times. It's the starting and stopping the dll thread that has me befuddled. Code anyone? A link to proper help? Galen Hello Galen,
I think we may first make the question clear, so that we can just be on the right track :) As I understand, you have a VB .NET 2005 winform project and it calls a VB 6.0 ActiveX DLL component. The DLL component will communicate with a device to gather data, then send messages to the winform application. In the Winform application, you need to start a thread to handle these message/data and display on the form. But I still have some unclear: 1. How did you send message from ActiveX DLL to winform application? 2. What is the actual issue, start a .NET thread or communicate with the ActiveX DLL? Regards, Luke Zhang Microsoft Online Community Lead ================================================== When responding to posts, please "Reply to Group" via your newsreader so that others may learn and benefit from your issue. ================================================== (This posting is provided "AS IS", with no warranties, and confers no rights.) > 1. How did you send message from ActiveX DLL to winform application? In dll compiled with "Unattended execution" and "Retained in Memory"Const WM_COPYDATA = &H4A Private Type COPYDATASTRUCT dwData As Long cbData As Long lpData As Long End Type Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" _ (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long Public Property Let WinHandle(ByVal value As Long) gHwnd = value End Property Public Sub SendData(ByVal hWnd As Long, ByRef data() As Byte) Dim cds As COPYDATASTRUCT cds.cbData = UBound(data) - LBound(data) + 1 cds.lpData = VarPtr(data(0)) SendMessage ByVal hWnd, WM_COPYDATA, ByVal hWnd, cds End Sub And finally in Loop SendData gHwnd, DatAry > 2. What is the actual issue, start a .NET thread or communicate with the Yes. How do I start the separate thread and send it some data before the > ActiveX DLL? data gathering loop starts. Galen Show quoteHide quote "Luke Zhang [MSFT]" <lukez***@online.microsoft.com> wrote in message news:Nk4bGSApGHA.4612@TK2MSFTNGXA01.phx.gbl... > Hello Galen, > > I think we may first make the question clear, so that we can just be on > the > right track :) > > As I understand, you have a VB .NET 2005 winform project and it calls a VB > 6.0 ActiveX DLL component. The DLL component will communicate with a > device > to gather data, then send messages to the winform application. In the > Winform application, you need to start a thread to handle these > message/data and display on the form. > > But I still have some unclear: > > 1. How did you send message from ActiveX DLL to winform application? > 2. What is the actual issue, start a .NET thread or communicate with the > ActiveX DLL? > > Regards, > > Luke Zhang > Microsoft Online Community Lead > > ================================================== > When responding to posts, please "Reply to Group" via your newsreader so > that others may learn and benefit from your issue. > ================================================== > > (This posting is provided "AS IS", with no warranties, and confers no > rights.) > Hello Galen,
Did you want to start the thread from winform application, or the ActiveX DLL? If it is winform application, you may consider the Thread class in .NET or BackgroundWorker Class ( new in .NET framework 2.0): http://msdn2.microsoft.com/en-us/library/system.componentmodel.backgroundwor ker.aspx If you want pass some data into a thread, you may use some public variant which can be accessed in a thread. Regards, Luke Zhang Microsoft Online Community Lead ================================================== When responding to posts, please "Reply to Group" via your newsreader so that others may learn and benefit from your issue. ================================================== (This posting is provided "AS IS", with no warranties, and confers no rights.) The thread will start from the winform application. I will look at the
BachgroundWorker class. Your coworker Walter Wang is looking at other aspects of my problem. Galen Show quoteHide quote "Luke Zhang [MSFT]" <lukez***@online.microsoft.com> wrote in message news:KhBzSzKpGHA.4612@TK2MSFTNGXA01.phx.gbl... > Hello Galen, > > Did you want to start the thread from winform application, or the ActiveX > DLL? If it is winform application, you may consider the Thread class in > NET or BackgroundWorker Class ( new in .NET framework 2.0): > > http://msdn2.microsoft.com/en-us/library/system.componentmodel.backgroundwor > ker.aspx > > If you want pass some data into a thread, you may use some public variant > which can be accessed in a thread. > > Regards, > > Luke Zhang > Microsoft Online Community Lead > > ================================================== > When responding to posts, please "Reply to Group" via your newsreader so > that others may learn and benefit from your issue. > ================================================== > > (This posting is provided "AS IS", with no warranties, and confers no > rights.) > Hi Galen,
Thank you for the information. I will talk to Walter on the backgroud informaiton of this issue. If you have any questions, please feel free to post here , or another with Walter. Regards, Luke Zhang Microsoft Online Community Lead ================================================== When responding to posts, please "Reply to Group" via your newsreader so that others may learn and benefit from your issue. ================================================== (This posting is provided "AS IS", with no warranties, and confers no rights.) 
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