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Access Violation Queryinterface

Thanks in advance. –AKJ Oct 12 '15 at 3:53 Set a breakpoint on BSecRem!_com_ptr_t<_com_IIID >::_QueryInterface+0xd (which should put you at the push ebx instruction). It holds 0xc. Portions of the site layout use Yahoo! Maybe it depends on the server that is connected to. Check This Out

What does the expression 'seven for seven thirty ' mean? "How are you spending your time on the computer?" How to tell my parents I want to marry my girlfriend How More hunting… I found the MSDN docs for QueryInterface, and they state: "If the object does not support the interface specified in iid, *ppvObject is set to NULL." So according to Mostly it autogenerated by com2j and consists only CoCreateInstance (CLSID). –W55tKQbuRu28Q4xv Apr 23 '10 at 15:24 Hi, again, generated java code: everfall.com/paste/id.php?qyvbz6upy56b –W55tKQbuRu28Q4xv Apr 26 '10 at 3:42 add That's just screwy, and it's not what the specs say you should do, but it could happen. http://stackoverflow.com/questions/2698068/access-violation-after-getinterface-queryinterface-in-delphi

Then try to figure out why offset zero contains 0xc instead of a valid address. –Marc Sherman Oct 12 '15 at 14:37 add a comment| active oldest votes Know someone who Taxiing with one engine: Is engine #1 always used or do they switch? It would be stupid, but it probably wouldn't be immediately obvious. So what happens with that teardown code in each of those four conditions?

  1. What I can/should read about COM (in Delphi) to avoid dumb questions like this?
  2. You must obtain an honest IDispatch* pointer, then QueryInterface for IHTMLDocument.
  3. CO_E_ERRORINDLL EXE has error in image.
  4. You must enter a numeric report ID View Your Reports Search Server Response from: ETNACODE01 Copyright© 1994 - 2013 Embarcadero Technologies, Inc.

The specs say that QueryInterface should increment the refcount of the object it's returning. The crash is seen frequently. Output N in base -10 Why do CDs and DVDs fill up from the centre outwards? Save time, search the archives at http://discuss.microsoft.com/archives/index.html .

I'm getting this error in the IDE with Word Automation, but not when running the native app.Old laptop (Windows 7) with the same code works fine. E_NOINTERFACE Either the object pointed to by ppv does not support the interface identified by riid, or the QueryInterface operation on the class object returned E_NOINTERFACE. This is illegal. http://stackoverflow.com/questions/2486654/access-violation-exception-from-delphis-supports-queryinterface Thanks in advance, Ryan ps - the offending line is commented as such.

Then use dt @ecx where is the type, if any, displayed by ln @ecx. Thanks! –Sharon Mar 22 '10 at 6:53 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign REGDB_E_READREGDB Error reading the registration database. I read a lot of articles and notes on the internets, but COM and COM in Delphi are still not clear to me.

undo a gzip recursively Different tasks, same characters I've broken my new MacBook Pro (with touchbar) like this, do I have to repair it? http://marc.info/?l=ms-dcom&m=104333347304640 Now consider this code: procedure X(Intf1: IInterface); var Intf2: IInterface; begin if Supports(Intf1, IFoo, Intf2) then DoSomething(Intf2); end; There's a local variable of an interface type, so at the end of There are no responses to "Pathological QueryInterfaces" yet. It could be a PDF file, an MS Word document or, as in your case, a Windows shell folder.Igor Tandetnik Marked as answer by Blast Xiang Friday, August 23, 2013 6:13

In that case, there are four meaningful things it can do with its out parameter: Set the out parameter to nil (or leave it alone, which amounts to the same thing, his comment is here So _Release gets called, and… boom! Are there any rules of thumb for the most comfortable seats on a long distance bus? Virtual method call on a garbage value.

Browse other questions tagged delphi com queryinterface or ask your own question. Hope that helps, Andy Johnson http://www.andrewjohnson.me.uk __________________________________________________ Do You Yahoo!? You are effectively down-casting from IDispatch* to IHTMLDocument2*, as if by reinterpret_cast. http://supportcanonprinter.com/access-violation/what-is-an-access-violation.html I changed the line below the one you posted to check to see if(SUCCEEDED(hr)) and sure enough, it jumps over that if block.

CO_E_APPNOTFOUND EXE not found (CLSCTX_LOCAL_SERVER only). Try ub 5d931569 in windbg. –Marc Sherman Oct 8 '15 at 13:38 1 That's unreadable. The exception occurs in the following line: if IsEqualIID(IID, FServer.FServerData^.EventIID) then because FServer is nil (it's a "Read of address 00000034" error).

More likely, we're talking "Do you want to send this error report to Microsoft?" and an infinite series of exception messages, until you finally get fed up and kill the process.

Your comment seems to bear this out. The dump is pointing to p->QueryInterface(GetIID(), reinterpret_cast(&pInterface)); The disassembly shows as below, //fill method is called. Then we get to the finalization code. But that would lead to a memory leak, not a crash.

If somebody actually implemented a QueryInterface that way, they would find out about it, real quick, because all the code that used their object would crash in a hurry. To unsubscribe, mailto:[email protected] [prev in list] [next in list] [prev in thread] [next in thread] Configure | About | News | Addalist | SponsoredbyKoreLogic Sign in Gallery MSDN Library Forums What I still missing? navigate here If you use a reasonable programming language (like Delphi), and you use the built-in QueryInterface stuff that's already been written for you and doesn't have evil bugs like case #4, then

UK> Date: 2003-01-23 14:41:12 [Download message RAW] Black, Not sure what the problem is, but a few questions/suggestions to narrow it: 1. Different tasks, same characters Send form result back to twig ​P​i​ =​= ​3​.​2​ How To Tell When Broccoli is Bad? I try to check 'hr' but every 'hr' is S_OK, how could I make it not reporting exceptions when visiting local directory? E_ACCESSDENIED General access failure (returned from LoadLib/CreateProcess).