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I worked before. Then I did something stupid and my program crash. Then I change it back. Now when I execute the program, it hangs. I trace through the source and find it stops at ::CoCreateInstance (called by CComPtr.CoCreateInstance()). Any idea?
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register the COM component again.
She's so dirty, she threw a boomerang and it wouldn't even come back.
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Hello There,
Can somebody advise me where I can download the sample codes(i.e.control object(CO) and service object(SO) and its testing application) ? I need to know the skeleton and the methods/properties relation for each CO,SO and AP.
Meanwhile, some opos related link to Microsoft is gone !
(i.e.http://www.microsoft.com/business/industry/ret/retoposoverview.asp). If anyone of you knows where to link to Microsoft for OPOS documents, please let me know.
THANKS IN ADVANCE !!!
BEST REGARDS FROM,
Julio
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Hi all,
I'm having trouble getting information on how to enumerate a folder that I created. My folder is under the "System" directory, and I want to display the contents in a menu (much like the "Send To" menu). I found the "Navigating the Namespace" article on MSDN, but but that just finds the "first" folder to enumerate.
I have a an IShellFolder interface pointed to the system folder:
hr = SHGetMalloc(&pMalloc);<br />
hr = SHGetFolderLocation(NULL, CSIDL_SYSTEM, NULL, NULL, &pidlSystem);<br />
hr = SHGetDesktopFolder(&psfDesktop);<br />
<br />
hr = psfDesktop->BindToObject(pidlSystem, NULL, IID_IShellFolder, (LPVOID *) &psfSystem);<br />
<br />
if (SUCCEEDED(hr))<br />
{<br />
hr = psfDesktop->QueryInterface(IID_IShellFolder, (LPVOID *) &psfSystem);<br />
psfDesktop->Release();<br />
}<br />
<br />
hr = psfSystem->EnumObjects(NULL, SHCONTF_FOLDERS, &ppenum);<br />
Now how can I get an this pointed to my folder? I'm familiar with IShellFolder::ParseDisplayName , but I just don't know how to implement this (if this is in fact what I need).
Could someone point me in the right direction?
Thanks,
Matt
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In ATL, a .tlb file is generated automaticly for the component. But in a MFC-based component project, how can I create a .tlb file for it?
I want to become a great programmer just like most of you. But I still have a long way to go, can you help me? Of course, I will be very glad to help some of you, if I can.
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How was your component created? Did you use one of the wizard options?
I have test both an MFC ActiveX control and MFC Application with COM Server support and both generated the expected tlb file in the debug folder?
Michael
"I've died for a living in the movies and tv.
But the hardest thing I'll ever do is watch my leading ladies,
Kiss some other guy while I'm bandaging my knee."
-- The Unknown Stuntman
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The IDispatch interface is useful sometime. But I can't find a sample that use more than one IDispatch-derived interface in one MFC-based component. Can't we use more than one in MFC? How can I use more than one IDispatch-derived interface in one component just like in ATL?
I want to become a great programmer just like most of you. But I still have a long way to go, can you help me? Of course, I will be very glad to help some of you, if I can.
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Hi
I issued this problem recenty but now I know a bit more about its nature.
I'm trying to store some data in MsOffice files and the problem is that MsWord 2000/XP removes my data after I save document from the Word (I tried also MsWord 97,MsExcel 97/2000/XP and here my data remains untouched). Now some explanation how I store my data in doc file:
1. Using StgOpenStorage I open office file as a compound file
2. I create new storage with IStorage::CreateStorage
3. Within newly created storage I create new stream using IStorage::CreateStream
4. I store my data within newly created stream using IStream::Write
5. I release all opened streams and storages
I discovered that when in doc file Word adds stream 0Table (1Table is probably always present) my data doesn't dissapear (I don't know why). I don't know how to prevent Word from deleting my data but I suppose that forcing Word to add 0Table stream could solve my problem (but how can I do this). I would appreciate any hints.
Mariusz Popiolek
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Using Access 2000 and ADO VC++6.0
I am executing the following statement..
VARIANT Params[2];
Params[0].vt = VT_I2; Params[0].iVal = 1;
Params[1].vt = VT_R4; Params[1].fltVal = 8.99;
m_pCommand->adCmdText = "Query4";
m_pCommand->ActiveConnection = m_pConnection;
m_pCommand->Execute(0, Params, adCmdStoredProc);
Generates an exception {DB_E_PARAMNOTOPTIONAL}
Query4 in Access is as follows:
PARAMETERS vID Short, Rad IEEESingle;
INSERT INTO TABLE1 ( ODID, MeasRadius )
VALUES (vID, Rad);
Thanks for your help in advance.
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I have around 500 records to insert into a table in Access 2000. I am using ADO.
Is it possible to pass all of the 500 records to a query using some kind of SafeArray parameters and Insert them all at once?
Any tips how this can be accomplished ?
Thanks
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I need to open MSWord, retrieve information from it, change some information, and then save it. All these will be done using VC++/MFC. Does anybody have some existing code which I can take a look at it?
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hello,
I need your input/advice on a practical (and urgent) problem!
I am currently developping a time critical app on a Windows NT/2000 platform involving pseudo real-time image acquisition.
The app should be flexible, fast and implement some fault-tolerant features. For example, I want to handle 12 cameras "simultaneously" (multitasks) for an acquisition. One channel acquition task may crash. But the whole application (the remaining working channels) should NOT crash! So I thought of using different processes for each channels.
The next question was then: how do I handle (share?) huge chunk of data (512*512 RGB images), among a pool of processes under Windows NT?
Of course, an obvious solution would be to use either PIPES or SHARED MEMORY (using FileMapping). But lots of coding is necessary and I will end up with a LOT of bugs (and I must have NO MEMORY LEAKS at all, it's imperative!!).
I discovered COM, a standard way of doing what I want, but I was wondering how you transfer BIG CHUNKS of data between COM servers???
What should I use to have something efficient, but also flexible in terms of development?
Please just give me some clues!
Thanks!
Bertrand Boichon
Research Assistant
Electrical & Computer Engr
Oregon State University
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as long as all your modules will be located on the same machine, you can just pass HGLOBAL memory handles to and from COM objects. i do it all the time.
-c
No matter how fast light travels it finds the darkness has always got there first, and is waiting for it.
-- Terry Pratchett,
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Hi
I succesfully added new storage into MSWord compound file (and new stream inside this new storage), but the problem is that when I open this doc in MSWord, made some change and save doc, my storage and stream dissapears. I saw application that adds stream(in root storage) which is "word saving proof" but I don't know how to do this. I also encountered strange thing: when I have word doc with stream added by this application, storage and stream added by me doesn't dissapear. I don't know why this happens. Anyone have some idea how to prevent new streams and storages from deleting by Word? Thanks in advance for any hints.
Greetings
Mariusz Popiolek
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Hi All,
I need to know the reason why the function AddRef returns a long integer?
Could somebody explain me?
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From "Platform SDK : COM"
IUnknown::AddRef
The IUnknown::AddRef method increments the reference count for an interface on an object. It should be called for every new copy of a pointer to an interface on a given object.
ULONG AddRef(void);
Return Value
Returns an integer from 1 to n, the value of the new reference count. This information is meant to be used for diagnostic/testing purposes only, because, in certain situations, the value may be unstable.
I hope that helps.
Iain.
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I recently accepted a project that involves writing a COM component that will be used from a Java program. Does anyone have any suggestions or links about a Java2COM bridge or examples?
With best regards,
Daniel
Wenn ist das Nunstück git und Slotermeyer? Ja! Beierhund das oder die Flipperwaldt gersput!
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The project I am involved with at work is using the jintegra product to do just this, not sure what your requirements are but it is working at our level, which is a ~30 engineer project, running for 1 year so far. There are few 'gotchas' relating to things like type conversions and function overloading. Our prototyping effort/trial to get up to speed was about 1 engineer for 6 weeks.
see:
http://www.linar.com/
David
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How in the world can i get this to work
if i use IXMLDOMNode in the idl it compiles
if i use the using namespace in the c++ code i'm still good
however the headers created from the idl result in the following:
error C2872: 'IXMLDOMNode' : ambiguous symbol
Help!
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I have been coding C++ for a while with ATL 3.0 and 7.0. However I cannot figure out how to access the IE com object view ATL 7. Does anyone know a good resource on this as I need to manipulate settings in the browser dynamically with a COM object. The MS Reference Library is no longer available and who knows what they will replace it with.
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ATL has nothing to do with IE.
sometimes it helps to look at the IL generated code
a MS guy on develop.com "answering" .NET issues
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