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IConnectionPointContainer* pCont;
pUnk->QueryInterface(IID_IConnectionPointContainer, (void**)&pCont);
IEnumConnectionPoints pEnum;
pCont->EnumConnectionPoints(&pEnum);
IConnectionPoint* pConnPoint;
while(pEnum->Next(1, &pEnum, NULL) == S_OK) {
DoStuffWithConnectionPoint(pConnPoint);
pConnPoint->Release();
}
(error handling and irrelevant ->Release()'s omitted)
IEnumConnectionPoint follows the standard patterns as all IEnumXXX interfaces does. See the topic on IEnumXXX in the MSDN library.
--
<british-accent>Pass the jam, would you?
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Hmmm,
I have read this chapter "Structured storage and compound files" from not soo good INSIDE OLE by kraig. I am not able to compile the source code given with this chapter, it needs inole.dll which i can't seem to find.
So kindly tell me how to compile it or direct me to some other link etc where i can see a working example of "Structured storage and compound files" in C++ (not using mfc or ATL).
Thank you.
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I'm trying to implement the IProcessInitializer interface implemented in COM+ 1.5. I've implemented it in a COM+ DLL created in VC++ 6, using ATL objects, and included the comsvcs.h header file in my app.
When trying to run the object via ASP I get a 'No such interface supported' message. I'm running this on a Windows Server 2003 machine.
Any ideas?
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I know nothing about COM, COM+, ActiveX, OLE or any of these technologies. I've never programed in Visual C++ before, and I have no intention in doing so. However, I have experience in Delphi and C#.
I need to know about COM, etc. Which book will help me grasp these technologies without delving into VC++?
Sammy
"A good friend, is like a good book: the inside is better than the cover..."
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Essential COM by Don Box is a good book. But I guess C++ knowledge is kind of a prerequisite for that book. Inside COM by Dale Rogerson.
But still, knowing C++ doesn't do you any harm to fully understand COM.
--
<british-accent>Pass the jam, would you?
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Jörgen Sigvardsson wrote:
But still, knowing C++ doesn't do you any harm to fully understand COM.
???
Tech.Support : Mam, is your pc running under windows?
Customer : No actually its close to the main door.
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COM evolved from C++ virtual table pointers. If you already understand the vtable concept in C++, you can often skip the first 2-3 chapters in a COM-book, and you don't have to give "the interface concept" a second thought as it's as natural as air. 
--
<british-accent>Pass the jam, would you?
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Thanks to nice articles on the site I was able to get my COM project going nicely. I decided to do this without ATL/MFC as my needs are quite basic and I really want to understand what I'm doing. I'm not saying ATL/MFC are bad, I've worked with MFC for years so this really isn't about what's good and what's bad, I just chose this approach and try to live with my decision.
Enough of introduction, here's the problem. Being new to COM, I'm having some problems in adding support for every interface required by Internet Explorer to use it. IDispatch and invoke seem to work nicely, but do I need something more?
Do I need to mark the component safe for scripting if I sign the code?
Also, I need some interoperability with another ActiveX component, namely Macromedia Flash. I'd be happy to handle this via javascript functions, but how do I retrieve the scripting host and is there a solution which would work on other browsers than IE?
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If all you need is to invoke few methods in your component, then there is no need to implement other interfaces, IDispatch is enough (although ISupportErroInfo could be useful for error reporting)
Whether to mark it "safe for scripting" or not is up to you. If you won't, the IE behavour will depend on IE security setting "SCript ActiveX controls marked safe for scripting" : "disable", "prompt", "enable"
Edward
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Hi Folks,
If I declare an object tag with a class ID, I get statement completion in Interdev. If I use a ProgID I don't 
I'd rather use PROGID's - any way around this?
Davy
My Personal Blog - Homepage.
Scottish News - Angus Blog, Perth Blog and Dundee Blog
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I've written a Word automation appilcation in C#, and I'd like to capture the OnClose Event....I know thats not the name but I don't know what else to cal it. Basically I open an instance of word and open a document, if the user tries to close the word window I'd like to create a small question dialog box, and thoughts ?
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I'm developing a ActiveX in MFC Visual C++ 6.0 (Not ATL) and I have a serius problem and I can't find documentation in books or Internet.
How can I save a CArray into the persistence of a ActiveX????? (I mean in a PX_Blob function)
A Thousand Thanks.
Diego
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Serialize it to a CArchive?
You'd be better off asking in the Visual C++ forum.
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Yes Serialize to a CArchive and the pass the handle (HGLOBAL) of that archive to the PX_Blob.
And of course recover that CArray later. 
Thanks. 
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Hi,
I am currently using Visual Studio version 6.0 for C++/MFC development and I want to move to the new IDE Visual Studio .NET and continue learning COM and ATL C++ developlment.
QUESTION
Can I develop regular COM/ATL C++ code using the new VS.NET? I should say that I am new to COM programming so I don't want to make things more difficult.
So my question is really - I would like to continue the same C++/MFC/COM/ATL coding but using the new compiler and IDE. Is that possible, without too much grief?
Thanks
Mike
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any 1 can help me what and when __uuidof is used in com
when i used it with _CommandBarButtonEvents when creating an add in for outlook 2000 it generated error "this class have no uuid associated with it" . but in ole object viewer i can see its uuid.
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can u write those lines of code whih u r using to get __uuidof ur event interface.
Abhishek Srivastava
Software Engineer (VC++)
India ,Noida
Mobile no 9891492921
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__uuidof keyword extract guid assigned to an object via "uuid" attribute ((__declspec(uuid"...")). It's not always assigned. Usually headers generated by midl or "import" statement have such attibutes attached to the objects (interfaces, enums)
Check your header file that has a declaration of _CommandBarButtonEvents
Edward
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Got a problem, exhausted all of my ideas:
I have an MFC / ATL-com-server project. Upon final release, I want the COM object to wait for a timer to fire one last time and run it's thread to completion before unloading itself. Here are some attempts:
1) AddRef() in the com object and then once the timer thread has fired it's last time, Release() from that thread. This causes a crash in the main window of the app in CWnd::DestrowWindow function with this code:
if (pWnd != NULL)
{
#ifdef _DEBUG
ASSERT(pMap->LookupPermanent(hWndOrig) == NULL);
#endif
}
2) In the CSSLogCOM::InternalRelease() function (which I've overridden), wait for a flag to be set when the timer thread fires and completes with while(bWait) Sleep(1000);. This doesn't work because the timer won't fire once we're in this function! ???
3) I would try to post a WM_QUIT message to the main window, but the ATL server can host many copies of the same COM object in a single instance and if one of them posts the quit message, other running instances will be stopped early.
Anyone have any idea how I can "delay" the final release of a COM object from closing the ATL server until my worker thread has completed?
Thanks
~Steve
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How about using CreateEvent/SetEvent/WaitForSingleObject/SignalObjectAndWait?
Create two events before the worker starts, one called "StopNow" and "DidStop". Let the worker thread do it's thing, periodically checking the "StopNow" event with WaitForSingleObject. When your server is about to terminate, make it use the function SignalObjectAndWait. This'll set the "StopNow" event, thus triggering the worker thread. It'll also make the server wait for the "DidStop" event. Meanwhile, the thread exits gracefully, but before finally quitting, it sets the event "DidStop", which will give the main thread clearance to continue termination.
void OnTerminate() {
SignalObjectAndWait(hStopNow, hDidStop, INFINITE, FALSE);
...
}
void ThreadProc() {
while(...) {
...
if(WaitForSingleObject(hStopNow, 0)) {
SetEvent(hDidStop);
}
}
}
--
Seraphim Shock. Gold for your ears.
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Thanks for the tip, and the example code. Looks promising, I'll give it a go...
~Steve
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I want to convert HTML to TEXT from some string
It good works in VB code like this:
Dim body As String
Dim hd As HTMLDocument
Dim str As String
Set hd = New HTMLDocument
Open "c:\test\a.html" For Input As #1
body = Input(4188, #1)
hd.body.innerHTML = body
Debug.Print hd.body.outerText
I try do it with VC++ so:
IHTMLDocument2 *pHtmlDoc = NULL;
HRESULT hr;
hr = CoCreateInstance(CLSID_HTMLDocument,
NULL,
CLSCTX_INPROC_SERVER,
IID_IHTMLDocument2,
(LPVOID *) &pHtmlDoc);
IHTMLElement *pBody;
hr = pHtmlDoc->createElement(CComBSTR("BODY"), &pBody);
CComBSTR bsText;
hr = pBody->get_outerHTML(&bsText); // OK, we have ""
CComBSTR SomeText("Some Text);
hr = pBody->put_outerHTML((BSTR)SomeText); // ;-( falls
It falls down while "put_outerHTML"
Who know right solution?
PS
Set hd = New HTMLDocument
creates an object with html code with base document structure (5 tags: html, body, head, title, p).
CoCreateInstance creates absolutely empty object.
Why?
================================
My products are here
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Sorry don't have time to check it myself, but should work: you can try to query for IPersistStreamInit, and then call IPersistStreamInit::InitNew, that should initialize the html document object
Edward
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