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by: Chris |
last post by:
I am not sure if this is the right newsgroup. But does anyone know what is
the difference between a BSTR and a LPOLESTR?
The only thing I could find out is that the advantage of taking BSTR instead
of LPOLESTR is that determining the length of a BSTR is much faster.
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by: Gilad Walden |
last post by:
I use C# in .NET framework.
I have an ActiveX implemented in C++ that has a COM interface method that
gets as it’s out parameter a BSTR* . The interop translates this BSTR* into
C# string. From my managed code, I am calling that function with ‘out’
parameter of ‘string’ type. For normal size strings it works fine, but when
the string is very big (> 50,000 bytes), I get a null exception from the COM
interop.
What is the reason?...
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by: Digifox |
last post by:
Below is a class method that puts a new string
in place of the old one!
I am new to this environment!
But if I am in the write area to begin with!
I am trying to iterate thru the string passed to this
method! Encrypt it and put it back into newVal.
Maybe a for/next or loop here around newVal.
I would like to rebuild the string(newVal)
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by: Michael Tissington |
last post by:
I have a C++ function in a DLL of the form
BSTR WINAPI DoSomeWork(LPCSTR szConnection, LPCSTR szGUID)
I use SysAllocStringByteLen to return a BSTR.
For the most part this works accept when the calling applicaiton tries to
free the BSTR and I get a RtlFreeHeep error. I'm guessing because the bstr
has been allocated in one dll and it being released in another.
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by: Karthik |
last post by:
Hello!
I am not a wizard in this area! Just need some help out in this. I am
trying to convert bstr string to new character string. Here is the
snippet of my code.
**** Code Start****
GlobalInterfacePtr->GetName(bstr, bstrTNamePtr, &retVal);
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by: bluter |
last post by:
We have server components which were created by a third party and
compiled in VC++5 (sp3). They run fine on NT4 and 2000, however during
testing of our migration to Server 2003, these components have been
failing when performing Data Access functions. In particular we have
been having problems with BSTR and _bstr_t.
_bstr_t(BSTR*, 1) is the original code that the problem started with.
Other findings are -
1) Converting a BSTR* to a...
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by: Egbert Nierop \(MVP for IIS\) |
last post by:
In win32 mode, a BSTR was UINT length prefixed and terminated exactly by a
zero char.
So if you allocated "Hello World" that would allocate 28 bytes.
In x64 and (IA64 as well) it would become 32 bytes, because of the fact that
a pointer, is 8 bytes instead of 4 bytes.
The length prefix -still- is a UINT however and not a UINT_PTR.
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by: Abubakar |
last post by:
Hi,
Lets say I write this line:
BSTR b = m_pdoc->Getxml ();
where m_pdoc is MSXML2::IXMLDOMDocumentPtr.
Now "b" contains the xml text. When I exit the function in which this line
is written, do I have to take care about deleting "b"? And how do I do it ?
Regards,
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by: mzdude |
last post by:
I need to interface with a windows DLL that has the following
signature
extern "C" void Foo( BSTR in, BSTR *out )
Code so far
Traceback (most recent call last):
File "<pyshell#14>", line 1, in <module>
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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