Concurrent ActiveX control and QTML library access limitations

I have a .Net app that uses the QuickTime ActiveX control for read-only display of movie files. The app also uses the QTML SDK through an 'unmanaged' library for creating and editing movie files.
I am finding that, when flattening a large movie through the SDK, the ActiveX control interface is blocked. On completion of the SDK operation, the control's behaviour returns to normal. Note that different movie files are in use for each interface. What are the constraints for using the two interfaces concurrently?
Thanks,

Technical Note TN2125 implies that this is expected behaviour:
"Additionally, QuickTime is completely serialized on Windows only allowing a single thread to call into the QuickTime Library at any one time. If one thread is performing a QuickTime operation, any other thread making a QuickTime API call will block waiting for the previous operation to return."
It would be useful to know how QuickTime Player does not also have this same restriction, as it is possible to manipulate multiple movies concurrently in Player.

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RE: ActiveX control and Active Server Pages?

Martin, if it works in standalone VB program but not in an .asp page
through VBScript, I guess the reason may be the type mismatch on the
parameters of the ActiveX automation methods. VBScript is a subset of VB
and only supports the OLE data type VARIANT for calling the OLE
interface. The Conductor ActiveX control probably requires the actual
data types, such as long, BSTR, and so on, to be used on the parameters.
As a result, VBScript cannot call the methods on the control. One
workaround you can try is to create your own ActiveX control which is
simply a wrapper for calling the Conductor control. Its parameter types
use VARIANT and you do the data conversion in your wrapper code. Hope
this helps.
Lenny Hon
Descartes Systems Group
-----Original Message-----
From: Martin Peters [SMTP:[email protected]]
Sent: Monday, July 27, 1998 10:50 AM
To:
Subject: ActiveX control and Active Server Pages?
Hello Forte users,
Did anyone try to use the ActiveX control that ships with Conductor
1.0G in an Active Server Page?
I tried to use the ActiveX control without luck, so a sample would be
appreciated. The code
works fine in Visual Basic.
Below the code:
<HTML>
<BODY>
<%
Set thisDirectory =
Server.CreateObject("CONDUCTORCLIENT.WFDirectoryServiceCtl.1")
Set thisEngine = thisDirectory.WFFindEngine("ceengine", "centrale")
Set thisUser =
Server.CreateObject("CONDUCTORCLIENT.WFUserProfileDescCtrl.1")
thisUser.New
thisUser.ProfileName = "MiniUP"
thisUser.userName = "martin"
' The following call fails: Invalid procedure call or argument:
'thisEngine.OpenSession'
Set thisSession = thisEngine.OpenSession("CREATE", thisUser, "martin",
0)
Set thisProcess = thisSession.CreateProcess("MiniPD", Empty)
thisSession.CloseSession (WFSESSION_TERMINATED)
%>
</BODY>
</HTML>
Martin Peters
COMPAQ
NSIS - AD&I - Application Connect
email <[email protected]>
phone: +31 (30) 2834902
fax: +31 (30) 2834980
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I don't have 6.1 in front of me now. I came up with a workaround for my application when I encounted this problem. I created an attribute node for the container and the tab control. Whenever the tab control was not on the page with the control, I made the container invisible. This then hid the activeX control.

Flash player 10.1 Help ( ActiveX control and Download manager)

I've been trying for several hours to download the new flash player 10.1. I tried everything in the FAQ and still nothing. I tried un-installing the older version that I had (9.3.3),   and still nothing.Then when the download manager gets to the end of the download, it keeps saying Error: Installation failed but Adobe Air was still able to download so the problem is obviously flash 10.1. Then it tries to finish installing it and when its done it says that it couldn't register ActiveX control and that error 19166 occured. I already enabled ActiveX so I dont know what the problem could be.
Help would be appreciated and could someone explain what error 19166 is and how to register or install activex
ps. I had this problem a while back but somehow I was able to download flash version 9.3.3, so even if I can't download 10.1, can someone give me a link to download version 9 instead.
System information: Windows 7
                              Internet explorer 8
                              32-bit
                              Norton 360

Thanks for your reply.I've tried/done everything on that page and I'm still having issues. And I've already disabled Norton and windows firewall and still nothing works.

Web browser and script activeX controls and HTML data

Hello,
I'm trying to use the Microsoft Web Browser (IWebBrowser2) and Script (IScriptControl) activeX controls in Labview to evaluate and execute HTML script. If I wire the web browser control's document object to the object input of the Script control's AddObject method, I can then evaluate/execute script such as "document.f.btnI.focus();" and such (in this case corresponding to Google's home page). However, there are other expressions that include the "window" object that are proving much more difficult to work with. Although I can browse the document object's parentWindow object via the property browser, if I try to access that object programatically, I get the error "Error -2147467262 occurred at No such interface supported". I'm wondering how to include the window object for scripting.
I'm writing a content-oriented web crawler. I've been writing it with pretty low level TCP functions, handling 301/302 "object moved" and "<META HTTP-EQUIV="refresh" CONTENT="0; url=http://millercountyliberal.com/">" redirections manually. But there are other automatic script-based redirections like:
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</script>
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regsvr32 "c:\MyDir\XHTTP.dll"
Thanks.
Attachments:
HTML Script Testing.zip ‏773 KB

Hi Ted,
This seems to be a problem with the way you are referencing the ActiveX properties. I would research a little more on the API for these objects. See http://msdn.microsoft.com/workshop/browser/webbrowser/reference/ifaces/iwebbrowser2/document.asp for an explanation of the IWebBrowser2 Document property. I am suspicious of where you are typecasting the Document variant into the IHTMLDocument2 object and this is where the error is being thrown.
A search of this error code on Google shows that this is a generic error from the ActiveX object, and not a LabVIEW error, although it is confusing since LabVIEW uses error codes in this same range.
Hope this helps!
Doug M
Applications Engineer
National Instruments
For those unfamiliar with NBC's The Office, my icon is NOT a picture of me

Overlay an item over an activex control and/ or disabling the mouse scroll wheel

There seems to be several references in the discussion forum to placing a picture control over an activex item to prevent the activex item being selected etc.
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What am I doing wrong?
Failing that, is there another way of stopping the user getting access to the activx control?
Essentially what I want to do is stop them accidentally scrolling through the control's pages with the mouse scroll wheel. I've stopped them accessing the scroll bars, BUT it is still possible to use the scroll wheel unfortunately.
Something else I tried was a tab control: placing the activex control on a page and then trying to make the page on top transparent. Needless to say that didn't work....
Andy

Important questions:
What ActiveX control are you using?
I'm using the PDF activex control to display a PDF on the front panel of my VI.
What version of LabVIEW are you using?
I'm using LabVIEW 7.1
What "control pages" are you talking about?
The pages of the PDF: it has several pages. If a mouse is held over it the user can scroll using the scroll wheel, or if they right click they can access the Adobe menu.
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Thanks
Andy
Attachments:
Display PDF 7.1.vi ‏98 KB

ActiveX controls and clear_form

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Hi,
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Janet
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Uploaded with plasq's Skitch!
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TD

RELATION BETWEEN ACTIVEX CONTROL AND THE TRANSACTION.

HI,
I WANT THE RELATION BETWEEN TRANSACTION AND ACTIVE X CONTROL IN TERMS OF GUI AND TCD TEST CASES.
ARUN REDDY I

is your CAPS lock key locked? if not kindly do not use all upper case.
Coming to your question.
what do you mean by relation between activex & transaction? if you could clarify more we may be able to help.
Raja

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I have just started programming Java Beans. Being from Microsoft background my first feel is that Java Beans are to Java what ActiveX is to Microsoft. Is this true? I hope that some of the gurus out there will be better able to explain.
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This is pretty much true. ActiveX and JavaBeans fulfil similar roles, they just do it in completely different ways.
ActiveX relies on COM, a JavaBean is just another class using specific naming conventions.
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Cheers

Crystal Reports ActiveX Design and RT Library

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Hos can I distribute the dll to a customer computer so that when I run my program it will find the registered COM Object

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What version of Crystal Reports Developer are you using?
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Setting parental controls and allow safari access

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Sharon...
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OCX and ActiveX controls

Hi there,
Can anybody please answer to my following questions?
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Hi,
I'm looking for the serial control in the create control list at the
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Two of our WebHelp projects display the following two
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It's because you are viewing the help locally. Your users
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Concurrent ActiveX control and QTML library access limitations

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