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Hey great!!!! THANKS!!! 
And how can I find out what the url is the browser wants to navigate to?
What do I need to do with the VARIANT *url? 
I also want to change the *url to redirect the browser to a different site
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That is the URL being navigated to.
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I know, but it is of type VARIANT.
How can I convert it into a "readable" format like char?
And how can I modify the variable *url?
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u can use this : CString strUrl = CString(URL->bstrVal);
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My DLL does not use MFC extension, therefore CString does not work 
And how can I modify the variable "url"?
(for example like url = "something")
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The variant holds all kinds of types. check to see if the url.vt == VT_BSTR (it will or it will be VT_BYREF|VT_BSTR) then you can use the url.bstrVal (or if byref url.pbstrVal) to see the url which will be a unicode string.
if (!wcscmp(bstrVal, "http://thesitetheyshouldnotgoto.com")
{
SysFreeString(url.bstrVal);
url.bstrVal = SysAllocString("http://younaughtyuser.com");
}
Cheers,
-Erik
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
My thoughts are my own and reflect on no other.
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I don't know whether I understand what you mean.
Here is what I have so far
STDMETHODIMP CIEHlprObj::BeforeNavigate2(IDispatch *pDisp, VARIANT *url, VARIANT *Flags, VARIANT *TargetFrameName, VARIANT *PostData, VARIANT *Headers, VARIANT_BOOL *Cancel)
{
if(url->vt == VT_BSTR)
{
if (!wcscmp(url->bstrVal, "http://thesitetheyshouldnotgoto.com"))
{
SysFreeString(url->bstrVal);
url->bstrVal = SysAllocString("http://younaughtyuser.com");
}
}
if(url->vt == VT_BSTR | VT_BYREF)
{
if (!wcscmp(url->pbstrVal, "http://thesitetheyshouldnotgoto.com"))
{
SysFreeString(url->pbstrVal);
url->pbstrVal = SysAllocString("http://younaughtyuser.com");
}
}
return S_OK;
}
But I get 5 compiler errors and 1 warning
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Well since you haven't given the compiler errors I can only venture to guess that the reason is you are doing string compares of unicode vs ansi strings. For example in the code in your previous message you state
if (!wcscmp(url->bstrVal, "http://thesitetheyshouldnotgoto.com"))
{
SysFreeString(url->bstrVal);
url->bstrVal = SysAllocString("http://younaughtyuser.com");
}
It should be
if (!wcscmp(url->bstrVal, L"http://thesitetheyshouldnotgoto.com"))
{
SysFreeString(url->bstrVal);
url->bstrVal = SysAllocString(L"http://younaughtyuser.com");
}
I probably forgot the "L" in my sample above. that would account for 4 of the errors. What's the fifth?
Cheers,
-Erik
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
My thoughts are my own and reflect on no other.
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You have the URL in url.bstrval
And you can redirect the Browser with Navigate2.
But A question, you want to control the IE or you ar making your own Explorer???
Cheers!!!
Carlos Antollini.
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url.bstrval is of type unsigned short*, isn't it?
How to convert to char?
I have this code so far:
CComVariant varURL(url->bstrVal);
varURL.ChangeType(VT_BSTR);
??? << OLE2T(varURL);
I need a variable for "???"
I want to control the IE
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First
I always do that in this mode:
CString str = _T("");
str = vtFld.bstrVal;
Second
If you want to control the IE, read the answer that Michael Dunn posted you...
Best Regards!!! 
Carlos Antollini.
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Check out KB article Q179230 which contains a complete BHO sample, including how to grab the URL and how to cancel navigation.
--Mike--
http://home.inreach.com/mdunn/
Trillian: What are you supposed to do with a manically depressed robot?
Marvin: You think you've got problems. What are you supposed to do if you are a manically depressed robot?
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I already took a look at this article, but the example doesn't use BeforeNavigate2 and no variable "url" of type VARIANT.
btw I hate the type VARIANT
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I have defined a class foo, and I have a CList of the class, defined as:
CList <foo, foo&=""> fooList;
After populating the list, I want to process items from that list in a function within another class. The ways I have tried keep giving me C2664 and C2440 errors.
This sounds pretty basic, but what is the proper way to declare my function parameters and make the call with the CList?
TIA.
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Here's how you prototype a CList reference parameter:
void YourFunction ( CList<foo, foo&>& refList );
--Mike--
http://home.inreach.com/mdunn/
Trillian: What are you supposed to do with a manically depressed robot?
Marvin: You think you've got problems. What are you supposed to do if you are a manically depressed robot?
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I would like to disable borders which appears with WebBrowser ActiveX. I saw that a solution would be to implement IDocHostUIHandler interface and to use GetHostInfo(), but how to implement that interface from a MFC Dialog Exe. AtlBrowser and WBCustomizer implement IDocHostUIHandler from COM interface.
Thanks in advance.
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I was implementing a reference counting mechanism. How do I address the situation, where I store the pointers in a list or a map and does not have any other references to it. If I use the MFC map or list classes, will the addition to the list/map increment one count. As far as I understand, they either add it as a void* or a CObject*. Is it different in STL lists?
- Thomas
modified 29-Aug-18 21:01pm.
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I was implementing a reference counting mechanism You mean something other than what is available anyway?
If you are adding the pointer to a list you do not need to AddRef. You would AddRef if you were copying the interface.
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If I understood you well, it's some class you're designing (say CYourClass) that has the ref counting methods (AddRef() and Relase or something similar). In this situation, no container, be it from MFC or STL, is going to call that methods automatically if all you store in them is plain pointers to CYourClass. What you should have to do is store instead some suitable smart pointer that does the job of incrementing/decrementing the objects count at construction, destruction and assignment time. Have a look here at CodeProject or any other major programming site to find a wealth of info about smart pointers.
Once you have your smart pointers up and running, both MFC and STL containers will work OK with them. IMHO, however, STL is preferrable because of portability and design issues.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Thankyou for the reply. I have already made the pointer that does the job of inc/dec, assignment etc.
I have a smart pointer implemented, that is used like this:
CPtr<CMyClass> p1 = new CMyClass;
This will make an object of type CMyClass inside the smart pointer and increment the ref count.
if I did
p1 = NULL;
the object would be deleted, because the reference count = 0;
Consider the following case :
I have a class with a member variable m_ptrList of type CPtrList or CTypedPtrList.
CClass::MyFunc()
{
CPtr<CMyClass> p1 = new CMyClass;
m_ptrList.AddHead(p1);
}
The problem that I foresee is that the AddHead will not increment the reference count. So will the object get deleted when MyFunc returns.
Is there something wrong in my understanding of the situation?
-Thomas
modified 29-Aug-18 21:01pm.
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Is there something wrong in my understanding of the situation?
No, your understanding of the situation is absolutely correct, and the object will get deleted when MyFunc returns. CPtrList is a beast every reasonable programmer should try to avoid, because it forces you to abandon type information when storing things in it and reinferring it later thru an explicit cast. Things are no better with CTypedPtrList, as the poor patch it proposes to bring type information back does not permit you to deal with smart pointers.
If you can make the switch, I recommend you enter the wondrous land of STL and substitute list<CPtr<CMyclass> > for your former MFC lists everywhere. Additionally, you might want to reconsider having defined operator CMyClass * (), as it paves the way to errors resulting from inadvertently casting your smart pointers away thus loosing track of the right ref count (as in your example). It'd be better to have an explicit method for casting like T * get() so the programmer is aware of entering a risk zone when she/he uses it.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Is there any simple way to change a item's
parent of a tree control?thank you.
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Do you mean the "parent of a tree control" or the "parent of a node in a tree control"?
Derek Lakin.
Salamander Software Ltd.
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(item's parent) of (a tree control),
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In that case ... if you're using CTreeCtrl, you need to call GetParentItem and pass it the handle of the item (HITEM) you want to know the parent of. It will return the item handle of the parent item, or NULL if it doesn't exist.
If you are using raw Win32, you need to use Treeview_GetParentItem and pass it the window handle (HWND) of the tree control and the item handle of the item you want to know the parent of. It will also return the item handle of the parent item, or NULL if it doesn't exist.
Hope this helps
Derek Lakin.
Salamander Software Ltd.
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