my TCppWebBrowser is leaking memory

Posted on 2002-05-02
Last Modified: 2012-05-04
I'm using the TCppWebBrowser in Borland C++ Builder
and I have a problem.

I load new stuff into the browser with this code:

TMemoryStream *stm1 = new TMemoryStream();
AnsiString tmpBasic = readFile("rightStartPage");

char *str = tmpBasic.c_str();
IPersistStreamInit *psi;
TStreamAdapter *sa = new TStreamAdapter(stm1,soReference);
SUCCEEDED(CppWebBrowser1->Document->QueryInterface(IID_IPersistStreamInit,(void **)&psi));

delete stm1;

And the program grows every time I load new stuff into
the browser. I dont know how to avoid that.

Does anyone know what I should do to avoid memoryleakage??
Question by:nfredrikn
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3

Expert Comment

ID: 6986439
Well, for one, you are doing a QueryInterface() for psi.
You need to do a psi->Release() because of that. You also need to do it on every variable you got with QueryInterface...

Accepted Solution

Crius earned 300 total points
ID: 6986454
A worse problem is I don't see where you are deleting sa. Every variable you allocate memory for using new must be deallocated with delete... somewhere...

Author Comment

ID: 6988148
but the reason I dont delete "sa" is because the
program crashes when I try to. Do you know what to
do about that?

Expert Comment

ID: 6991755
It might have something to do with the stm1 stream still being attached.

I don't know anything about TStreamAdapter, but since you called new on it, somewhere, somewhen, you will have to call delete on it, or suffer memory loss and old age...

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Getting IP address 8 104
Embarcadero C++ Builder XE2 TDateTime 8 80
How to copy an image file into clipboard C/C++? 1 220
show out valin of json for debugging in visaul c++ 1 48
In days of old, returning something by value from a function in C++ was necessarily avoided because it would, invariably, involve one or even two copies of the object being created and potentially costly calls to a copy-constructor and destructor. A…
  Included as part of the C++ Standard Template Library (STL) is a collection of generic containers. Each of these containers serves a different purpose and has different pros and cons. It is often difficult to decide which container to use and …
The goal of the tutorial is to teach the user how to use functions in C++. The video will cover how to define functions, how to call functions and how to create functions prototypes. Microsoft Visual C++ 2010 Express will be used as a text editor an…
The viewer will learn how to clear a vector as well as how to detect empty vectors in C++.

726 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question