C / C++ / MFC

Richard MacCutchan13-Oct-09 1:29

Richard MacCutchan

13-Oct-09 1:29

zon_cpp wrote:
can Anyone help me to start this work?
brief and useful articles that I can use they

You could always try this[^].

CPallini13-Oct-09 1:32

13-Oct-09 1:32

See, for instance, here [^].
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Anish C.V13-Oct-09 2:09

Anish C.V

13-Oct-09 2:09

Try this.

How to Create a Windows NT/ Windows 2000 Service[^]

Anish C.V

http://www.iedetech.com

Rajesh R Subramanian13-Oct-09 3:44

Rajesh R Subramanian

13-Oct-09 3:44

Hi,

See Start Your Windows Programs From An NT Service[^]

“Follow your bliss.” – Joseph Campbell

David Crow13-Oct-09 4:35

David Crow

13-Oct-09 4:35

See here.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"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

Extracting data from the webpages using MFC

Hadi Dayvary13-Oct-09 11:16

Hadi Dayvary

13-Oct-09 11:16

Hi I have a class for stop/start service, and can give a sample.
Tell me(or call me if you like)

Hadi

www.logicsims.ir

NaveenHS13-Oct-09 1:12

NaveenHS

13-Oct-09 1:12

Hello All,

I have received an assignment for Extracting data from the WebPages, still now I have learnt some basic thing like MFC and Win32 API.

Can anyone please suggest me topics which I have to learn before starting this assignment.

My Assignment is like for example we have an espn site schedules

http://espn.go.com/nfl/teams/schedule?team=dal

WK DATE OPPONENT RESULT W-L HI PASSING HI RUSHING HI RECEIVING
1 Sun, Sep 13 @ Tampa Bay W 34-21 1-0 Romo 353 Barber 79 Crayton 135

I have to extract the Schedule details like Team name, Date , Place etc … and store it to some table.

Please suggest me some good topics and sites.

Thanking you,

Naveen Hs.

CPallini13-Oct-09 1:29

13-Oct-09 1:29

See [^]. Moreover, have a look at these CP articles [^] (most of them are C# based, but presented techniques may be used as well with C++/MFC).
Smile | :)

NaveenHS13-Oct-09 1:35

NaveenHS

13-Oct-09 1:35

Thank you sir very much, i will go through the articles it will be very useful for me.

kilt13-Oct-09 3:12

kilt

13-Oct-09 3:12

This has no sense at all.
You can do it with 10 lines of code with COM (or UDLTF)

CPallini13-Oct-09 3:23

13-Oct-09 3:23

kilt wrote:
This has no sense at all.
You can do it with 10 lines of code with COM (or UDLTF)

Yes, and with 5 lines of WTF, I suppose. Smile | :)

Richard MacCutchan13-Oct-09 4:12

Richard MacCutchan

13-Oct-09 4:12

kilt wrote:
You can do it with 10 lines of code

Interesting that all your responses are like this, except the actual number of line may be different, but you never post the actual code, or a link to where it may be found!

Iain Clarke, Warrior Programmer

Iain Clarke, Warrior Programmer13-Oct-09 5:43

13-Oct-09 5:43

Then shouldn't you be really kind and post those 10 lines in a reply to the original poster, instead of whinging about people helping.

I think I've just been suckered into troll-feeding...

Iain.

I have now moved to Sweden for love (awwww).
If you're in Scandinavia and want an MVP on the payroll (or happy with a remote worker), or need contract work done, give me a job! http://cv.imcsoft.co.uk/[^]

Rajesh R Subramanian13-Oct-09 5:46

Rajesh R Subramanian

13-Oct-09 5:46

kilt wrote:
This has no sense at all.

By seeing the kind of trash that you post here, it can be concluded that you have no sense at all.

“Follow your bliss.” – Joseph Campbell

David Crow13-Oct-09 4:46

David Crow

13-Oct-09 4:46

You could navigate the HTML with Microsoft's IHTMLDocument2 interface. The table you are interested in extracting from is the first <table> element on that page.

NaveenHS15-Oct-09 2:21

NaveenHS

15-Oct-09 2:21

Thank you very much for the reply David.

msn9213-Oct-09 15:50

msn92

13-Oct-09 15:50

I have struggled with loading web page sources and parsing them too.

This is the way I prefer and it's the easiest one I know:

#include "afxinet.h"
...
BOOL GetPageSource(CString& url, CString& source){
	CInternetSession ises;
	CFile* file=new CFile();
	try{//There might occur a connection error
	  file=ises.OpenURL(url);//CInternetSession::OpenURL(url) returns a source code in CHttpFile;
	}
	catch(CInternetException* e){ //If an error occured, show messagebox with errorcode
		CString error=L"";
		error.Format(L"Connection error!\nError code: %ld",e->m_dwError);
		AfxMessageBox(error);
		return FALSE;
	}
	UINT len=1024;
	char buf[1024];
	source=L"";
	while(len>0){
		len=file->Read(buf,1024);
		if(len>0)source.Append(CString(buf),len);
	}
	file->Close();
	ises.Close();
	return TRUE;
}

You can use GetPageSource() function to get a page source.
For the parsing part, I use regex.

Link error [modified]

ratprita13-Oct-09 0:46

ratprita

13-Oct-09 0:46

when i changed the main function of a template class into a separate file, i have got a link error.Display is a function in the template class

error LNK2001: unresolved external symbol "public: void __thiscall Gen_Queue<int>::Display(void)" (?Display@?$Gen_Queue@H@@QAEXXZ)

What may be the problem?
Anyone know the solution?

I was coding a generic queue. i have made GenericQueue.cpp with functions Add(), delete() and display(). genericQueue.h have the variables and declaration of the functions.

In another file GenericQueueMain.cpp i have written the function main() for the generic queue. I have made an object for the GenericQueue and tried to call the functions . Then i got the error-- error LNK2001: unresolved external symbol "public: void __thiscall Gen_Queue<int>::Display(void)" (?Display@?$Gen_Queue@H@@QAEXXZ)

modified on Tuesday, October 13, 2009 6:23 AM

Re: Link error

CPallini13-Oct-09 1:11

13-Oct-09 1:11

What files? What is the 'main function' of a template file? What were the changes (i.e. There are chances you'll post the relevant code?)?
Smile | :)

Re: Link error

Cedric Moonen13-Oct-09 1:20

Cedric Moonen

13-Oct-09 1:20

Your question is not really clear but I guess you are trying to move the definition of a template class from a header file to a cpp file. Am I right ?

If that is the case, you can't do something like that. For a template class, the full definition of the class and functions has to be known when compiling, thus you have to include everything in the header file. One 'trick' to get around that problem is to move the definition in a .inl file (to differentiate from a standard cpp file) and include that file in your header file (at the bottom of the file).

Cédric Moonen
Software developer

Charting control [v2.0]
OpenGL game tutorial in C++

fast fast fast

__erfan__12-Oct-09 23:43

__erfan__

12-Oct-09 23:43

hi.
i am writing a video processing application. at first i tried to use OpenCV and it was greate as it had very high performance. but i need to implement some functions by myself and i am doing this. but the main peroblem is the "performance". for example, i used the cvSub(...) funcation to subtract two 2D arrays. and then i tried to do this with a simple "for loop". the calculation times are shown below:

openCV : 0.135496 ms
mycode : 0.376614 ms

and i ran the program several times and the result was the same.
so i am here to ask :
do you have any idea for performing the task as fast as OpenCV?

part of my code :

double t2;
printf("-----cvSub on cvMat------\n");
for(int i=0; i<5; i++)
{
	t2 = (double)cvGetTickCount();
	cvSub(mat1, mat2, mat3, 0);
	t2 = (double)cvGetTickCount() - t2;
	printf( "detection time = %gms\n", t2/((double)cvGetTickFrequency()*1000.) );
}
printf("-----sub on 2D array------\n");
for(int i=0; i<5; i++)
{
	t2 = (double)cvGetTickCount();
        for(int j=0; j<240; j++)
	{
		for(int k=0; k<320; k++)
		{
			m3[j][k] = m1[j][k]-m2[j][k];	
		}
	}
	t2 = (double)cvGetTickCount() - t2;
	printf( "detection time = %gms\n", t2/((double)cvGetTickFrequency()*1000.) );
}

each method is performed 5 times to get the mean time

Re: fast fast fast

CPallini12-Oct-09 23:57

12-Oct-09 23:57

Since the OpenCV source code is available, why don't you have a look at it?
Smile | :)

Re: fast fast fast

__erfan__13-Oct-09 0:09

__erfan__

13-Oct-09 0:09

I've searched for it and ... nothing. D'Oh! | :doh:

if you find that please let me know

Re: fast fast fast

CPallini13-Oct-09 1:01