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Home > Error In > Error In Activex Cocreateinstance

Error In Activex Cocreateinstance


Did you try setting the CLSCTX_LOCAL_SERVER flag for dwClsContext in the CoCreateInstance Call? You will need to ensure that your DCOM settings allows the LabVIEW ActiveX Server to be launched and accessed through ActiveX automation. Conclusion 1. Emmanuel Carabott March 23, 2010 at 11:58 am Hi Raien, Sorry to hear about your issue, I am afraid I wasn't in that situation and do not know of a workaround.

Emmanuel Carabott March 23, 2010 at 12:25 pm Hi Ebbe and Eli, Glad this workaround helped you out! I am not a low level programmer. LPCTSTR psz = pszFmt; pvarg += dispparams.cArgs - 1; // Params go in opposite order. For more information, including how to pass optional arguments, see IDispatch::Invoke and Dispatch Interface and API Functions.     Show: Inherited Protected Print Export (0) Print Export (0) Share IN THIS

Cocreateinstance Example

c++ vb6 com+ activex-exe share|improve this question edited Feb 27 '15 at 17:12 asked Feb 26 '15 at 13:26 Luiz Ricardo Mouro 62 At a certain level, maybe a I'm trying to use CoCreateInstance on a Visual SourceSafe DLL. Manipulate the object through the methods and properties exposed in its IDispatch interface. Enter a * in the exported VIs field so that you expose all VIs.

You always refer to the object through an interface pointer. Carlos Carlos August 19, 2010 at 9:46 pm It would be great since W2008 can't manage simultaneous 32 and 64 bits procceses in the same application pool. The problems with 32bit / 64bit registry stuff is often that you use a 32 bit application to register a 64 bit assembly - this does not work since 32 bit Cocreateinstance Vs Cocreateinstanceex You can do this by: Specifying the default security on the Default Security tab of the Distributed COM Configuration Properties application window.

Am I trying to use SWT >> incorrectly, or is >> this a bug in the SWT mapping to COM? >> >> Thanks, >> >> Paul Report message to a moderator Back to Top 2. Only users who have launch permission will be able to access the server. Finally, note that IAnimal is derived from the standard COM interface IUnknown.

I had try this: CComPtr producer; HRESULT result; result=producer.CoCreateInstance ("56919D41-BE39-11D2-A404-00104BDF4755"); but I have this error 'CComPtr' : undeclared identifier please what can I do? Cocreateinstanceex Example Here is the problem -- the identifiers have to be unique across all machines, because you cannot know on which machines you want to install a component. Alla rättigheter förbehållna. | Karta över hemsidan × Cart|Help KnowledgeBase Request Supportfrom an engineer NIHome > Support > KnowledgeBase EnglishChinese(China) 6 ratings: 3 out of My problem is that I don't know how to pass it to the CoCreateInstance...

  • Using the Registry When a COM component is installed, it has to have entries made in the registry.
  • Best regards, Ebbe Raien March 9, 2010 at 7:55 am Hi, I've tried the hack and it works fine but now we switched to Windows Server 2008 R2 and when I
  • So we have to specify which interface we want, IID_Idog, and pass a pointer to a place for CoCreateInstance to store the interface pointer.
  • That is why the .NET framework comes with 2 versions of regasm.exe.
  • DISPID * rgdispidNamedArgs; // DISPIDs of named arguments.

Cocreateinstance C++

Answered Your Question? 1 2 3 4 5 Document needs work? if (SUCCEEDED(hr)) { pDog->Eat(); pDog->Sleep(5); pDog->Release(); } else // Failure... Cocreateinstance Example Best regards Raien Simon March 15, 2010 at 3:51 am Emmanuel: Does this apply to typelib registered COM object. Cocreateinstance Msdn Server Access DeniedThis problem may be due to what VIs are exported by LabVIEW.

IDL looks like C++, but it has "attributes" in square brackets. Upon successful return, *ppv contains the requested interface pointer. Alex. If the problem is on the target computer, now just copy the testexec.ini file to the target computer. Cocreateinstance Clsid

C# Optional Array Parameter for Class Logical fallacy: X is bad, Y is worse, thus X is not bad more hot questions question feed default about us tour help blog chat Advanced Search Forum Visual C++ & C++ Programming Visual C++ Programming Active X and CoCreateInstance If this is your first visit, be sure to check out the FAQ by clicking the Select the Security tab. Or both an input and output?

So how do we get an interface pointer to one of the object's other interfaces? Clsctx_inproc_server Leave the value empty Create a new Key under HKey_Local_Machine\Software\Classes\AppID\ Again the new key should be called the same as the COM object’s GUID. Thanks to Emmanuel for saving me days of work.

Component object API function QueryInterface Checks whether IDispatch has been implemented for the object.

At my company, we have used both the same COM component compiled on 32-bit machine or on 64-bit machine, and BOTH work in 32-bit Excel as long as the COM objects riid [in] A reference to the identifier of the interface to be used to communicate with the object. Yes No Submit Den här webbplatsen använder cookies för att ge dig en bättre upplevelse. Cocreateinstance Class Not Registered This could be why Excel doesn't care about the bitness, but as your server is 32bit you will always need to register it in the 32bit portion of the registry.

Do you think that if I apply your hacks for the COM objects that I need, then the ASP pages will run in the new server without any additional 32 bits Can Communism become a stable economic strategy? These old posts are being kept for reference only. Subscribe to our blog feed and never miss a post.

In C++, COM header files define data types for GUID, class identifier GUID (CLSID), and interface identifier GUID (IID). Danny October 28, 2010 at 11:57 pm Hi, on 64bit systems prior to windows server 2008 R2 and Win7, be sure to put everything under Wow6432node. C++ Copy HRESULT Invoke(LPDISPATCH pdisp, WORD wFlags, LPVARIANT pvRet, EXCEPINFO * pexcepinfo, UINT * pnArgErr, LPOLESTR pszName, LPCTSTR pszFmt, ...) { va_list argList; va_start(argList, pszFmt); DISPID dispid; HRESULT hr; VARIANTARG* pvarg SD December 1, 2010 at 11:27 pm Hi Emmanuel, Thanks for the post.

I am using Windows XP Professional x64. The invocation flags specify whether a method, PROPERTYPUT, or PROPERTYGET function is being invoked. If we forgot to call Release, the object would be locked in memory until our application closed or you reboot the system. HRESULT hr; CLSID clsidYourObject; hr = CLSIDFromString(OLESTR("56919D41-BE39-11D2-A404-00104BDF4755"), &clsidYourObject); if (FAILED(hr)) { // error!

About the Author: Emmanuel Carabott Emmanuel Carabott (CISSP) Certified Information Systems Security Professional has been working in the IT field for the past 18 years. Forum New Posts FAQ Calendar Forum Actions Mark Forums Read Quick Links Today's Posts View Site Leaders What's New? Emmanuel is also a contributor to the GFI Blog where he regularly posts articles on various topics of interest to sysadmins and other IT professions focusing primarily on the area of Am I trying to use SWT incorrectly, or is this a bug in the SWT mapping to COM?

This displays the Component Services dialog window. Thismay be due to the fact that the run-time server cannot dynamically search for VIs like the LabVIEW development environment can. On the other hand, I > have no problem creating an instance of a Visio Drawing as an OLE Document. > > Experimenting with Visual C++, I am able to create