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Hello, i have a question about the MSXML library. I fail to find how exactly they read the XML Document when its already loaded into memory. If i look for XML nodes do they read the whole document from top to bottom until find it or its something with hash tables.
My problem is that i have to remove some elements for existent XML document and add it in another. I was wondering which is better(according to speed) to keep the XML Nodes in std::vectors and remove the needed items and put them in the new XML Document and this only with 2 read/write operations on the XML Document or i should get the first part of the items do whatever i have to do with them and then take the next part and so on. This will cause for at least 8 times reading the existent XML Document and getting XML NodeLists out of it. The problem here is that the first XML Document can be really big.
I think its better to read the information only once and do what i have to do with it and then write it in the new XML Document. At least i think its gonna be faster but i am not sure exactly how MSXML does the operations on the XML Document.
Thank you for your help. 
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Argonia wrote: I fail to find how exactly they read the XML Document when its already loaded into memory.
Did you look at the selectSingleNode() method?
Argonia wrote:
My problem is that i have to remove some elements for existent XML document and add it in another.
So why not let MSXML do this for you? For a given node (see IXMLDOMNode), use the removeChild() method.
Argonia wrote: ...but i am not sure exactly how MSXML does the operations on the XML Document.
While there are certainly better and more exhaustive examples available, I show how to briefly use MSXML here.
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
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DavidCrow wrote: Did you look at the selectSingleNode() method?
My question is what is in this function.
DavidCrow wrote: So why not let MSXML do this for you? For a given node (see IXMLDOMNode), use the removeChild() method.
I can't change the given XML Document. I have to get some of the nodes of the first and add them to the second Document .
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Argonia wrote:
My question is what is in this function.
Unless I had access to the source code, I wouldn't have a clue (nor would I care). If I were to surmise a guess, the class has some private member variable (e.g., file pointer or handle) that keeps track of when a file has been read or not.
Argonia wrote:
I can't change the given XML Document. I have to get some of the nodes of the first and add them to the second Document .
You can either remove unwanted nodes from the first and write the balance to the second, or copy wanted nodes from the first to the second. The net result would be the same.
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
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I want to make an Active X ctrl that communicates with a device and then sends data to main program. I want to know that Does activex work as seperate process. Does main program waits on ActiveX ctrl or I can do sperate processing simultaneously in my main program.
Thanks in advance.
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As the name ActiveX CONTROL suggests that it is a control you will need something (some app) to host it. You can call the activex's functions from the host which can be an executable.
ActiveX doesn't work as a separate process.
Does main program waits on ActiveX ctrl or I can do sperate processing simultaneously in my main program.
This depends on the implementation.
You talk about Being HUMAN. I have it in my name
AnsHUMAN
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I am using vc++ 6.0. I Have made an unlicensed activex ctrl application from app wizard (MFC activeX ctrl wizard for generating random drawing). When I am testing this Activex by ActiveX control test container, all functions are working fine, but when I am testing it with dialog application, On calling any method of ActiveX it is giving error debug assertion failed. Program ......
File: winocc.cpp; line: 345
I am making an object of this ActiveX ctrl wrapper class in my testing dialog application and then calling method defined in this ActiveX ctrl.
My code:
CNewSquiggleAcX m_ClNewSquigg;
CFileDialog m_ldFile(TRUE);
// Show the File open dialog and capture the result
if(m_ldFile.DoModal()== IDOK)
{
CString m_sResults;
m_sResults = m_ldFile.GetFileName();
//m_ClNewSquigg.GetSquiggleLength();
m_ClNewSquigg.LoadDrawing(m_sResults); // Error comes in this line calling any activex function
}
Calling any method of this self created unlicensed ActiveX ctrl is giving error.
Please help.
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I need to achieve a functionality but do not know how to start please guide:
Functionality:
USB Data Card (like internet data card) is attached with system A, system A is recognising device as USB device but I need to use that card using system B which is having all drivers of data card.
How to achieve it?
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You cannot have the device in one system and the drivers in another.
Use the best guess
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you should try to understand how mouse works on another remote desktop from your system.that may help.
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Hello Everyone,
I need a function to implement zero copy approach.Can anyone provide me some examples or suggestions about this?
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i have already searched but couldn't find any example.If you don't know plz don't give me stupid answers.
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Please don't be silly trying to be rude.
Veni, vidi, vici.
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sorry for being rude.but I have gone through many links but couldn't find any useful link.can you suggest me some links or examples. 
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You must've missed this link that Richard (indirectly) provided in his initial reply.
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
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For Windows, see here. For Linux, see here.
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
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When I try to compile a piece of code using the Intel Compiler, I get this error:
error: declaration may not appear after executable statement in block
I know I shall have all the declaration at the beginning of my code, but I'm eager to know why this should raise an error. GCC and the VS Compiler didn't give any errors.
Thanks in advance.
modified 17-Jun-13 15:04pm.
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Can you show us a minimal code that shows the error ? or the exact line of code with a couple of line above and below the line that gives the error?
What does the Intel compiler help says about this error ?
Nihil obstat
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This error is given even at some simple situations, like this:
int i = 0;
i = 0;
int j;
error will be given on the variable j declaration. Compiler doesn't give any further information on the error.
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Are you compiling C code with a C compiler ?
Nihil obstat
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Yes I do. The problem was with the C language standards specifications, as Mr. CPallini said. I tried compiling with GCC with
-std=c89 -pedantic argument and it warned me of mixed declarations and code.
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Actually (if I got you) Visual C++ compiler gives an error if a variable declaration is below an executable statement in block (The same compiler, of course, does not give an error if is compiling a C++ source code).
GCC does not give errors because it accepts such declaration as an 'extension' (see, for instance "Variable declaration placement in C" at Stack Overflow[^]). Note that C99 standard allows such kind of declaration but Visual C++ (and possibly the INTEL) compiler is not C99 compliant.
Veni, vidi, vici.
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