Using activex interfaces

A method of my activex component say A1, requires a parameter of type LPDISPATCH (another activex interface, say A2). How to do that in a VI.
A2 gets modified after calling method A1. How to use modified A2 later
Are there any examples?

You could wire an Automation refnum to that input terminal because that terminal would look to be of the same type or you will have to pass the A2 interface in from another method or property. LabVIEW can pass the returned LPDISPATCH as a variant from one activeX method to another.

Similar Messages

LabView interface with DLL that uses ActiveX

I've written a DLL using Microsoft Visual Studio 2005. This DLL uses ActiveX (MSXML4.0). It works fine being called from other applications created in Microsoft Visual Studio. It crashes being called from LabView 7.1. By commenting out everything, I've figured out that it crashes on the call to ActiveX (no problems if this call is commented out). What should I do to make it work?
I've tried using CoInitialize at the initialization of DLL; it didn't solve the problem.
Additional information: DLL is using MFC in a Static Library, not using ATL, Character set = Not Set.
The functions are defined in C calling convention (not __stdcall).
Please help.
Thank you.
Irina Kaliniouk

Thank you for your answer, but that is not the case. There is no UI in this DLL, but it is using some convinenient MFC classes, like threads, CString, etc. The threading really was not even involved in the example that crashed. The function that crashed was
selectNodes on MSXML2::IXMLDOMNodePtr. Here is the code:
MSXML2::IXMLDOMNodeListPtr selectNodes (LPCTSTR expression, MSXML2::IXMLDOMNodePtr pStartNode)
CComBSTR quesryBstr (expression);
return pStartNode->selectNodes (quesryBstr.m_str); //_bstr_t(expression));
where the pStartNode was a root node of
MSXML2::IXMLDOMDocument2Ptr m_pXMLDoc;
hr = m_pXMLDoc.CreateInstance ("Msxml2.DOMDocument.4.0", NULL, CLSCTX_INPROC_SERVER);
I commented out really everything except this function, so there was nothing to corrupt the memory or any other problems.
What can be of a problem?
Thanks.

How to use ActiveX of outlook express to realize the function of sending email using labview?

thanks!

I didn't manage to find a public ActiveX interface for Outlook Express, but I did find one for Outlook, and a few quick tweaks managed to get a message in the outbox. For some reason it wasn't sent (maybe I didn't have a user set up properly), but you can try playing with it to see.
Another option would be to use the built in SMTP VIs (unless you need POP3).
Try to take over the world!
Attachments:
Mail.vi ‏35 KB

How to control and display video from IP camera using ActiveX control over Internet.

Hello,
I need to control my IP cameras over the internet. I need to log into the cameras and then display the video. There's an ActiveX control registered on the computer and works fine with IE to access and control the cameras. Controlling the cameras using IE works fairly well, but there are some quirks that I'd like to eliminate by using my own custom code.
Has anyone created a vi that controls a Foscam FI8905W over the Internet? I’ve attempted, but I keep getting a catastrophic failure when I try to call ManagementConnect Method in the DVM_IPCam2 ActiveX Control Module V1.0. I'm not sure whether I need to establish an IP connection with the cameras first, or allow the ActiveX control to establish it for me.
Some example code would be greatly appreciated. Running LabVIEW 2011 on a Win7 32bit. Even some code used to control a similar device using ActiveX over Internet would be helpful.

I have an example vi for interfacing to the foscam activex.
I plan on using mouse click events within the activex window to trigger the PT function.
I only have the basic up/down/right/left directions and not the down-right/down-left/up-right/up-left in the enum. You can load the camera's web page and view the source to see the Java script code that uses the activex control. There are definitions for the other directions.
I had to mark the control as "Disabled" to keep click events from going to the activex control. If I double click the control, it goes full screen. If I then click on it to get out of full screen mode the video never returns or returns to the wrong spot in the VI.
Attachments:
Foscam Demo.vi ‏24 KB

How do I quickly update the ActiveX automation references in my VIs when the ActiveX interface changes?

Hello all,
I joined a test automation team in the middle of a large project and
inherited a huge set of VIs (over 700) and associated architecture for
this automation (not to mention the several thousand TestStand
sequences). Another part of the project is being developed by our
customer, who is using VB 6.0 to create ActiveX components which we
need to use in LabView to access their hardware. They've already
invested a large amount of time developing these ActiveX components,
and they are not finished -- meaning the ActiveX interfaces will be
changing. Every time they send updated ActiveX components, I have to
re-write many, many VIs including updating a couple strict typdefs.
This process takes way too much time and is mind-numbing and prone to
error or omission.
Unfortunately I can't post any of the VIs because of a NDA. But
perhaps a bit more detailed explanation would help. TestStand calls a
VI to open and get an ActiveX reference for automation (which it stores
in a variant). It will pass this reference into any VI it calls to
perform specific functions through this ActiveX interface. For
example, one VI that may be called passes this automation refnum into
another, which passes it to another, which passes it into another to
get the actual ActiveX reference stored in that variant (through a
Variant To Data call with a strict typedef of the ActiveX component
wired to the type input). [See the attached image of this sample VI
hierarchy: the far left icon would represent TestStand, and the far
right is the strict typedef.] Any of the VIs in the chain might use
ActiveX Property or Invoke nodes, and it can break at any one of those
when the ActiveX component changes. It's easy to fix each one, but
since there are so many VIs it takes a very long time.
Is there any way at all to do a massive search/replace or something to
make the ActiveX references update? I realise that even though
property or method names stay the same from one version to the next,
they are different references. Is there a way to update these based on
name if you give it the base ActiveX reference?
Thanks in advance for any help!
Tom Williams
Attachments:
hierarchy.GIF ‏6 KB

Ben,
Unfortunately I can't post any VIs that would demonstrate the problem
because the ActiveX components are confidential. I'll try to develop
my own ActiveX dll that will demonstrate it, but in the meantime, in
hopes that another picture will help, I've attached an image of a block
diagram (with some names changed to protect confidential information)
of one of the lower level VIs from the hierarchy I posted. In this
example, the "Automation Refnum IN" is an input with a type definition
linked to the strict typedef based on the ActiveX automation dll that
has changed. I updated that typedef, but as you can see the output to
the "Class1" indicator is broken. If I delete the "Class1" indicator
and select Create->Indicator from the Class1 property node, and then
wire the new "Class1" indicator to the connector pane, the VI is fixed
-- at least at compile time. In most cases there is also a runtime
problem where the reference obtained by one of the intermediate
property nodes is null, so the property or method node that uses it
fails (e.g. "_VNManager.Networks" property returned is 0, so the
"_Networks.Network1" property node fails). To fix this problem, I have
to delete the wires between the property nodes, and one by one select a
different property/method, then select the correct property/method and
re-wire. There seems to be a bit of "jiggling the handle" to get it to
work though.
I don't know if the ActiveX developer changed anything in this class,
but if he did, he didn't change the name of this class. I would like
to have to modify the VI only if a class, property or method has
changed name or been removed.
Does that all make sense? Thanks for any pointers or help!
Tom
Attachments:
Class1_Path.GIF ‏7 KB

Using ActiveX in Oracle Forms6i

Sir I have development an ActiveX in VB for urdu in oracle forms.
The problems I am facing is that it is storing the input efficiently but
when I Query the saved data it is not working,
I got an Error that OLE Object not defined for the current record.
It create the OLE object for a new record and take input & save it
But as I assign the retrieved Data in Post Query, it give error object not
defined.
At the same time it display out when assign with when button pressed.
the code that is working is for saving in the database is at save button (when
button pressed)
DECLARE
VEN_IDp OLE2.OBJ_TYPE;
VEN_NAMEp OLE2.OBJ_TYPE;
ADD1p OLE2.OBJ_TYPE;
CITYp OLE2.OBJ_TYPE;
ZIPCODEp OLE2.OBJ_TYPE;
STATEp OLE2.OBJ_TYPE;
COUNTRYp OLE2.OBJ_TYPE;
PHONE1p OLE2.OBJ_TYPE;
PHONE2p OLE2.OBJ_TYPE;
MOBILEp OLE2.OBJ_TYPE;
FAXp OLE2.OBJ_TYPE;
ECOMMENTSp OLE2.OBJ_TYPE;
n1 NUMBER;
V1 VARCHAR2(255);
V2 VARCHAR2(255);
V3 VARCHAR2(255);
V4 VARCHAR2(255);
V5 VARCHAR2(255);
V6 VARCHAR2(255);
V7 VARCHAR2(255);
V8 VARCHAR2(255);
V9 VARCHAR2(255);
V10 VARCHAR2(255);
V11 VARCHAR2(255);
V12 VARCHAR2(255);
BEGIN
--creating pointers to the activeX's
VEN_IDp := FORMS_OLE.GET_INTERFACE_POINTER('VEN_IDU');
VEN_NAMEp := FORMS_OLE.GET_INTERFACE_POINTER('VEN_NAMEU');
ADD1p := FORMS_OLE.GET_INTERFACE_POINTER('ADD1U');
CITYp := FORMS_OLE.GET_INTERFACE_POINTER('CITYU');
ZIPCODEp := FORMS_OLE.GET_INTERFACE_POINTER('ZIPCODEU');
STATEp := FORMS_OLE.GET_INTERFACE_POINTER('STATEU');
COUNTRYp := FORMS_OLE.GET_INTERFACE_POINTER('COUNTRYU');
PHONE1p := FORMS_OLE.GET_INTERFACE_POINTER('PHONE1U');
PHONE2p := FORMS_OLE.GET_INTERFACE_POINTER('PHONE2U');
MOBILEp := FORMS_OLE.GET_INTERFACE_POINTER('MOBILEU');
FAXp := FORMS_OLE.GET_INTERFACE_POINTER('FAXU');
ECOMMENTSp := FORMS_OLE.GET_INTERFACE_POINTER('ECOMMENTSU');
--getting new value returned by the ActiveX
N1 :=Project1_UserControl1.getUrduText(VEN_IDp);
V2 :=Project1_UserControl1.getUrduText(VEN_NAMEp);
V3 :=Project1_UserControl1.getUrduText(ADD1p);
V4 :=Project1_UserControl1.getUrduText(CITYp);
V5 :=Project1_UserControl1.getUrduText(ZIPCODEp);
V6 :=Project1_UserControl1.getUrduText(STATEp);
V7 :=Project1_UserControl1.getUrduText(COUNTRYp);
V8 :=Project1_UserControl1.getUrduText(PHONE1p);
V9 :=Project1_UserControl1.getUrduText(PHONE2p);
V10 :=Project1_UserControl1.getUrduText(MOBILEp);
V11 :=Project1_UserControl1.getUrduText(FAXp);
V12 :=Project1_UserControl1.getUrduText(ECOMMENTSp);
assigning the value to database item for saving
:VEN_ID := N1;
:VEN_NAME :=V2;
:ADD1 := V3;
:CITY :=V4;
:ZIPCODE :=V5;
:STATE :=V6;
:COUNTRY:=V7;
:PHONE1 :=V8;
:PHONE2 :=V9;
:MOBILE :=V10;
:FAX :=V11;
:ECOMMENTS :=V12;
END;
-- It save the record successfully
and the code not working at (post query OR timer expired created at post query)
It query the data from database and display it in the textitem but I want to
assign it to ActiveX for Urdu Display
(the activeX display Urdu for assiged value in button pressed case)
DECLARE
VEN_IDp OLE2.OBJ_TYPE;
VEN_NAMEp OLE2.OBJ_TYPE;
ADD1p OLE2.OBJ_TYPE;
CITYp OLE2.OBJ_TYPE;
ZIPCODEp OLE2.OBJ_TYPE;
STATEp OLE2.OBJ_TYPE;
COUNTRYp OLE2.OBJ_TYPE;
PHONE1p OLE2.OBJ_TYPE;
PHONE2p OLE2.OBJ_TYPE;
MOBILEp OLE2.OBJ_TYPE;
FAXp OLE2.OBJ_TYPE;
ECOMMENTSp OLE2.OBJ_TYPE;
V1 VARCHAR2(255);
V2 VARCHAR2(255);
V3 VARCHAR2(255);
V4 VARCHAR2(255);
V5 VARCHAR2(255);
V6 VARCHAR2(255);
V7 VARCHAR2(255);
V8 VARCHAR2(255);
V9 VARCHAR2(255);
V10 VARCHAR2(255);
V11 VARCHAR2(255);
V12 VARCHAR2(255);
str1 VARCHAR2(255);
str2 VARCHAR2(255);
str3 VARCHAR2(255);
str4 VARCHAR2(255);
str5 VARCHAR2(255);
str6 VARCHAR2(255);
str7 VARCHAR2(255);
str8 VARCHAR2(255);
str9 VARCHAR2(255);
str10 VARCHAR2(255);
str11 VARCHAR2(255);
str12 VARCHAR2(255);
BEGIN
SYNCHRONIZE;
VEN_IDp := FORMS_OLE.GET_INTERFACE_POINTER('VEN_IDU');
VEN_NAMEp := FORMS_OLE.GET_INTERFACE_POINTER('VEN_NAMEU');
ADD1p := FORMS_OLE.GET_INTERFACE_POINTER('ADD1U');
CITYp := FORMS_OLE.GET_INTERFACE_POINTER('CITYU');
ZIPCODEp := FORMS_OLE.GET_INTERFACE_POINTER('ZIPCODEU');
STATEp := FORMS_OLE.GET_INTERFACE_POINTER('STATEU');
COUNTRYp := FORMS_OLE.GET_INTERFACE_POINTER('COUNTRYU');
PHONE1p := FORMS_OLE.GET_INTERFACE_POINTER('PHONE1U');
PHONE2p := FORMS_OLE.GET_INTERFACE_POINTER('PHONE2U');
MOBILEp := FORMS_OLE.GET_INTERFACE_POINTER('MOBILEU');
FAXp := FORMS_OLE.GET_INTERFACE_POINTER('FAXU');
ECOMMENTSp := FORMS_OLE.GET_INTERFACE_POINTER('ECOMMENTSU');
--function setUrduText(interface oleobj,text in out varchar2) Return varchar2
This function Displays Urdu when value is assigned in when button pressed event
str1 :=Project1_UserControl1.setUrduText(VEN_IDp,:VENDOR.VEN_ID);
str2 :=Project1_UserControl1.setUrduText(VEN_NAMEp,:VENDOR.VEN_NAME);
str3 :=Project1_UserControl1.setUrduText(ADD1p,:VENDOR.ADD1);
str4 :=Project1_UserControl1.setUrduText(CITYp,:VENDOR.CITY);
str5 :=Project1_UserControl1.setUrduText(ZIPCODEp,:VENDOR.ZIPCODE);
str6 :=Project1_UserControl1.setUrduText(STATEp,:VENDOR.STATE);
str7 :=Project1_UserControl1.setUrduText(COUNTRYp,:VENDOR.COUNTRY);
str8 :=Project1_UserControl1.setUrduText(PHONE1p,:VENDOR.PHONE1);
str9 :=Project1_UserControl1.setUrduText(PHONE2p,:VENDOR.PHONE2);
str10 :=Project1_UserControl1.setUrduText(MOBILEp,:VENDOR.MOBILE);
str11 :=Project1_UserControl1.setUrduText(FAXp,:VENDOR.FAX);
str12 :=Project1_UserControl1.setUrduText
END;
I am not getting the point that why the Error OLE object not defined occur in
display case where as in new record the object is activited on new record
instane by itself but not in post query
I am working on application of a library with Urdu data and at last step Iam
facing the problem above PLs guide me
Thanks in advance
null

Ignore my previous post. I misread the question.
There is no support for using ActiveX in JDeveloper. What you would need to do is to wrap your activex in a Java class and then you'd be able to use that java class in your project. There may be some facilities available somewhere on the internet that would help you doing that. I just don't know of any.
Regards,
Michel

Using ActiveX controls in GUI application, which uses TestStand API

When using ActiveX controls in TestStand Operator Interface GUI,
CVI reports User Interface Library error no.-143:
"ActiveX control Error" on attempt to load panel, which contains ActiveX controls.
The same code, which takes care of user interface, but not references
TestStand ActiveX API (i.e. not creates TS Engine), works properly.
What's wrong?

Hello again Misha,
Sorry about my previous answer, I overlooked the fact that you were saying this error was caused by placing ActiveX controls in your Operator Interface (OI) GUI (as my example shows I thought the problem was with GUIs displayed from step code modules).
Nevertheless, the problem is still being caused by the same issue, and is solved in a similar fashion. The source for the CVI OI initializes the TestStand engine before it loads/displays the UI panels. The calls to initialize the engine seem to be CoInitializing the main GUI thread as multithreaded apartment (MTA) mode whereas you will need it to be single threaded apartment (STA) mode in order for the ActiveX control container to work properly. The TestStand engine is compatible with either modes, but only one can be in place at a given time. If we CoInitialize the OI's main GUI thread as STA this will solve the problem (the subsequent attempts of setting it to MTA will fail, but again this is ok since the engine is compatible with STA).
In order to perform this functionality you will need to put a call to CoInitializeEx in the main function of the CVI OI source (this will also require that you #include the "windows.h" file at the top of the source also). Here is what the main function in your main.c file for the CVI OI will look like once you have done this:
int main(int argc, char **argv)
int retval = -1;
sArgc = argc;
sArgv = argv;
if(InitCVIRTE(0, argv, 0) == 0) /* Initialize CVI libraries */
goto Done; /* out of memory */
// Intialize main GUI thread as STA to prevent other attempt to make it
// MTA, which will not allow ActiveX controls to be used.
CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
/* initialize the test engine */
if(!InitEngine())
goto Done;
if(!InitErrorDialogStrings())
goto Done;
if(!InStandaloneExecutable() && !DisplayRunningInEnvironmentWarning())
goto Done; // get out now
if(!ProcessPreLoginCmdlineArgs())
goto Done;
if(!CfgFile_Load())
goto Done;
if(!CfgFile_RestoreOptionSettings())
goto Done;
if(LoadGUIPanels() < 0)
goto Done;
if(!InitFileQuickList())
goto Done;
/* set initial gui state */
if(!InitGUI())
goto Done;
RunUserInterface();
retval = 0; /* normal exist status */
Done:
/* cleanup */
SeqFileList_DeleteAllSequenceFileRecords();
ExeList_DeleteAllRecords();
IconList_DeleteIconList();
SaveAndCleanupFileQuickList();
CfgFile_SaveOptionSettings();
CfgFile_WriteAndCleanupForExit();
AdaptList_DeleteAdapterList();
DestroyToolMenus();
CloseEngine();
FreeErrorDialogStrings();
return retval;
Note: Remember to #include "windows.h" at the very top of the main.c file and to include ole32.lib in your project file list in order to link in the definition for CoInitializeEx.
Jason F.
Applications Engineer
National Instruments
www.ni.com/ask

Need help in using ActiveX to retrieve a VARIANT

Need help in using ActiveX to retrieve a VARIANT.
Variant is shown as var{VT_Ul1,1} in debug
Using the following
hr = CA_VariantGetShort (&var, &value);
I get 0 for my answer instead of 1.
Solved!
Go to Solution.

Answered my own question.
VT_Ul1 is an unsigned char and not a short.

Editing the Customer Address using Open Interface

Hi All,
The requirement is to edit the address details(postal codes) of the customer using Open Interface and not the APIs.
They are insisting on using open interface as the Vertex validation(Taxation rules) is taken care only by Open Interface.
Will need help on this.Kindly advice.

Please refer the following whitepaper
https://metalink2.oracle.com/cgi-bin/cr/getfile.cgi?p_attid=67196.1:1
Thanks,
Anil

Unable to print crystal report over web using ActiveX Control

Post Author: jimmyp
CA Forum: General
We have a problem with printing crystal report over web using ActiveX Control. When clicking print button, it only shows a blank dialog web crystal viewer page without any error. The page just simply hangs. We installed the PrintControl DLL and enable all the security setting for ActiveX Control for IE. It still does not print. Does anyone know why?
Environment.
Bundle Crystal Report v10
Asp.net 2.0
IE 6.0 or higher.
Appreciate for your help.
Jimmy

Post Author: Ian Kulmatycki
CA Forum: General
A team member here found this, I haven't read it, I'm not sure if our problems are related to this, but hopefully it helps someone:
-ian
When Secure Sockets Layer (SSL) is enabled, using the ActiveX control to print reports from a Crystal 10 DHTML viewer results in the following error message:
"A communication error occurred, printing will be stopped."
How can this error message be resolved?
Resolution
This is a known issue with Crystal Reports 10 and Crystal Enterprise 10 viewers and has been tracked. The Track ID is ADAPT00282199.
This error occurs due to the receiving application performing a case-sensitive check for the HTTPS request header value "ON". When a sender application sends the value as "on" in lower case, the error occurs. The update below changes the receiving application to be case-insensitive.
Hot Fixes or Service Packs address this issue as indicated below. With the updates, this issue is resolved.
Unless indicated otherwise, Weekly Hot Fix updates from our FTP site have only been tested with English versions of products.
For Crystal Reports 10 and Crystal Enterprise 10, the update for this issue is included in the Crystal 10 Viewers Weekly Hot Fix (WHF). This is available in English only at the following location:
ftp://ftp.crystaldecisions.com/outgoing/EHF/viewers10win_en.zip
This issue is addressed in the following components (and later versions):
PageObjectModel.dll, version 10.0.5.785, dated 8/25/2004
ReportRenderer.dll, version 10.0.5.785, dated 8/25/2004
WebReporting.dll, version 10.0.5.785, dated 8/25/2004

Populating the Addressee field using Customer Interface program

Hello All,
Can any body tell me how to populate the "Addressee" column in the HZ_Party_Sites table using Customer Interface Program. Which field should be populated in RA_Customers_Interface_All table inorder to populate the "Addressee" field.
Thank you,
Vijay

You can post this thread in this
Customers as well.
Thanks
GM

How can I add excel pictures using activex

I would like to be able to use activex to insert an image into an excel spreadsheet. I know how to read and write data, but the chart feature is too cunmbersome and when I updated excel to 2007 most of the calls stopped working. I see that there is a pictures property/method that lets me specify an image file, but I don't know which property/method(s) to call it from.

2007 does take more time to draw the data on the chart. I am not having any problems with errors on the active X for 2007. I is much slower than 2003 I would agree. My IT group moved us to 2007 so I am stuck with it no matter how slow it is. I am trying to figure out how to get the help file back. I had these in 2003 myself. I know it has nothing to do with LabVIEW. It is an add in or some switch that you need to throw in excel to allow for this connection.
Tim
Johnson Controls
Holland Michigan

Can i use one interface to load data into 2 different tables

Hi Folks,
Can i use one interface to load data into 2 different tables(same schema or different schemas) from one source table with same structure ?
Please give me advice
Thanks
Raj
Edited by: user11410176 on Oct 21, 2009 9:55 AM

Hi Lucky,
Thanks for your reply,
What iam trying is ...Iam trying to load the data from legacy tables(3) into oracle staging tables.But i need to load the same source data into two staging tables(these staging tables are in two different schemas)
can i load this source data into two staging tables by using single standard interface(some business logic is there)
If i can then give me some suggestion how to do that
Thanks in advance
Raj

How to use multiple Interfaces for the same BS?

Hi @ ,
Is it possible to have a scenarion where i am using multiple interfaces in the same BS based upon some conditional field in the message.
I amnot able to get the solution I know with condition editor I can have multiple receivers but in my scenarion based upon message fiels i have to decide which BAPI to be used and wht mapping and then post it to the same System
Any help will be highly rewarded
Regards

Hi-
Yes it is possible you can use multimapping for mapping the interfaces.
To know more about multimapping see
http://help.sap.com/saphelp_nw04/helpdata/en/21/6faf35c2d74295a3cb97f6f3ccf43c/content.htm
Some more helpful links
/people/jin.shin/blog/2006/02/07/multi-mapping-without-bpm--yes-it146s-possible

Is there a way to run an existing PS-JS script using external interface

I have several previously written Photoshop JS scripts which I'd like to run through buttons on PS panels, much like the example for the HelloWorld introduction. I assume that--using external interface--I'll somehow be able to fire off these script files. Is this a correct assumption?
Thanks!

Certainly, but not with external interface.
Have a look at the cookbooks. There are examples of how to use the root host object to call directly into extendscript.

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