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ActiveX - OLE

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  • ActiveX - OLE

    If anyone could point me toward cleaner documentation on the use of ActiveX controls and how to address them in xbaisc I would appreciate it.

    This particular application is data acquisition scientific interments, then comes the problem of graphing and whether to write raw code or use MS chart that's currently out.

    The material I am able to find from Alpha deals with simple charts and little of depth. I.E. How do you get it to recognize the object?

    Thanks for any help and direction you can point me.

  • #2
    Re: ActiveX - OLE


    Fortunately, one of Alpha Five's strength vis a vis Filemaker is that it can use ActiveX controls, and Filemaker can't.

    Unfortunately, Alpha Five provides next to no documentation on using ActiveX controls with A5.

    Here are some pointers I've picked up from generous experts on this forum.

    1. Dimension your ActiveX as P

    For example, dim global ctTree1 As P

    2. Rename your activex control

    When you place the control on your form, A5 will name it as ActiveX1.

    You can either change this name in properties or set it by code.

    For example, ctTree1 = Activex1.ActiveX.this

    3. When refer to values in an array, you must use square brackets [ ] and not parenthesis ( ).

    4. A5 arrays are not zero based like Visual Basic. Thus the first value of an array is referred to as [1] and not (0).

    I really think there should be a separate subforum here where users could document their success or lack thereof with commercial activeX controls used with Alpha Five.

    Surprising isn't it, that Alpha considers this a strategic advantage and yet provides so very little assistance. I have yet to find a commercial activeX control with any demos or sample code written in XBasic.

    Bob McGaffic
    Pittsburgh, PA


    • #3
      Re: ActiveX - OLE

      Take a look in the Help file for ActiveX and OLE Overview for some info. Since there are different ways for these objects to be created, there are generally exceptions to any rule.

      I am also about to post on a problem I am having when controlling Adobe Acrobat. Search on this board to find examples that others have posted.



      • #4
        Re: ActiveX - OLE

        I find it a bit of trial and error to get the correct syntax, but it's not that bad after working with some controls.

        Here's code that works with a simple Image viewer activex control

        Photo = ui_get_file("Get Member Photo", "JPG(*.jpg)", defdir +"\*.jpg","X")
        If Photo <> "" then
        	:frmPhotoCrop:mbrphoto.activex.FileName = Photo
        	:frmPhotoCrop:mbrphoto.activex.View = 9
        End if
        x ="c:\pass\memberphoto", "JPG")
        The reference to the control is always

        The activex control documentation should tell you most of what you need for properties and events.

        I find going through the OLE Automation Browser very helpful at times (sometimes not so much) but always worth a try. Find it in the View Menu.

        I would suggest trying to find a well documented, current Charting activex control and try that.



        • #5
          Re: ActiveX - OLE

          I thank all of you for your input. I am attempting to utilize a device for measurement functions on a couple laboratory machines and post them to an in house network with A5 for remote control between three labs.

          A similar thing for two other types of laser was completed using C# but not sure I want to go through all the MS license hassle again with this one. Hopefully the tests will allow A5 to be a functional part of this project. Would make my life easier.

          Back to the topic. I will test the versions stated you all of you. I appreciate the communication and help.


          • #6
            Re: ActiveX - OLE

            So far, I have not been able to get any of the suggested processes to work with the system I'm using. Thank you for the attempts. It appears that I'm just going to have to stay with c# or vb net.


            • #7
              Re: ActiveX - OLE


              Look at:

              I hear and I forget. I see and I remember. I do and I understand.
              ---- Confusius ----