C / C++ / MFC Discussion Boards

AmitCohen22230-Dec-08 20:09

30-Dec-08 20:09

Hi All !

I'm running an application that spwans several processes and threads, it runs on Windows 2003 Server OS and using 8 cpu's machine(Xeon).
We are considering the use of SetProcessAffinityMask to allocate heavy processing jobs to a spcific cpu. My question therfore is this:

Using SetProcessAffinityMask, is it possible to tell the OS that I want my process to be the only one using that cpu (i.e. no other process, mine or the OS's, is allowed to run on it) ? is it possible ? Unsure | :~

We wish to get deteministic results when system is working for long periods of time.

thanks,
Amit Smile | :)

Re: Use of SetProcessAffinityMask

Mark Salsbery31-Dec-08 6:31

Mark Salsbery

31-Dec-08 6:31

AmitCohen222 wrote:
no other process, mine or the OS's, is allowed to run on it) ? is it possible ?

I don't believe so.

You may want to use SetThreadAffinityMask to distribute threads among processors,
but there's no guarantee the system will actually use your suggestions.

Try it and test it thoroughly to see if you're actually getting any benefit -
from my experience, on XP and above, the OS thread scheduler does a pretty good
job without intervention.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Command Line argument for MFC Application

Anubhava Dimri30-Dec-08 19:31

Anubhava Dimri

30-Dec-08 19:31

HI,
I want to pass argument for my application.My application is dialog based.so Please help me i have no idea how to do it.

Thanks

mailto: anubhava.prodata@gmail.com

Re: Command Line argument for MFC Application

Garth J Lancaster30-Dec-08 20:04

Garth J Lancaster

30-Dec-08 20:04

http://www.codeproject.com/KB/recipes/ccmdline.aspx[^]

is one way - its easy enough to use Google for more

'g'

Re: Command Line argument for MFC Application

Paresh Chitte30-Dec-08 22:38

Paresh Chitte

30-Dec-08 22:38

If you wish to pass command line arguments in IDE go to "Project | Properties | Debugging | Command Arguments". Here you can specify your command line arguments.

Hope this will help you.

Thanks,
Paresh.

Re: Command Line argument for MFC Application

Anubhava Dimri30-Dec-08 22:58

Anubhava Dimri

30-Dec-08 22:58

But how to check the passed arguments value at the initilization of application.

Best Regard
Anubhava Dimri

mailto: anubhava.prodata@gmail.com

Re: Command Line argument for MFC Application

Paresh Chitte30-Dec-08 23:27

Paresh Chitte

30-Dec-08 23:27

In CWinApp::InitInstance.
Please have a look at CWinApp::m_lpCmdLine.

Hope this will serve your purpose.

Regards,
Paresh.

Re: Command Line argument for MFC Application

Anubhava Dimri30-Dec-08 23:47

Anubhava Dimri

30-Dec-08 23:47

It's very helpful for me.

Very -2 Thanks

Best Regard
Anubhava Dimri

mailto: anubhava.prodata@gmail.com

Re: Command Line argument for MFC Application

Mark Salsbery31-Dec-08 6:34

Mark Salsbery

31-Dec-08 6:34

You can also use the CCommandLineInfo Class[^]

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

how do i create,read and write xml file using VC++6.0?

puppya30-Dec-08 19:09

puppya

30-Dec-08 19:09

i have 1 dialog application.my dialog
application is sending some messages to other appication.i want to save these
messages into xml file and so that later it can be executed.means i neeed to implement
to create,read n write to xml file.
thanks in advance

Re: how do i create,read and write xml file using VC++6.0?

Garth J Lancaster30-Dec-08 20:11

Garth J Lancaster

30-Dec-08 20:11

have you tried using Google or using the search feature here on CP ? give us a break and try to help yourself ...

http://www.grinninglizard.com/tinyxml/[^]

or

http://www.codeproject.com/KB/recipes/FlexibleParser.aspx[^]

for example

'g'

Re: how do i create,read and write xml file using VC++6.0?

Jijo.Raj30-Dec-08 22:22

Jijo.Raj

30-Dec-08 22:22

You can use MSXML[^] for doing XML related stuffs. The following articles will be useful.

1) Using MSXML to read XML documents[^].
2) CXml - A Wrapping Class for MSXML 3.0/4.0/5.0/6.0[^].
3) Plus a lot of articles in CodeProject XML Section[^].

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

Re: how do i create,read and write xml file using VC++6.0?

bob1697231-Dec-08 4:17

bob16972

31-Dec-08 4:17

Download the Microsoft XML Parser SDK and dig through the documentation. You'll probably find that using smart pointers and the DOM approach to be adequate for most scenarios.

How can Dark Rectangle sides?

Le@rner30-Dec-08 18:37

Le@rner

30-Dec-08 18:37

Hi all,

i m draw a rectangle with this.

CRect rectrect;
CDC* pDC;
pDC->Rectangle(rectrect.left,rectrect.top,rectrect.right,rectrect.bottom);

here the sides of rectangle appears very light ,i want to make it dark.

please tell me how can i do this.

thanks in advance.

IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH

Re: How can Dark Rectangle sides?

Naveen30-Dec-08 20:58

Naveen

30-Dec-08 20:58

The Rectangle function draw the border with the currently selected pen. So to get a dark border, before calling Rectangle, select a pen with dark color as show below

CPen DarkPen( PS_SOLID,1, RGB(0,0,0));
pDC->SelectObject( &DarkPen );
pDC->Rectangle(rectrect.left,rectrect.top,rectrect.right,rectrect.bottom);

nave

[OpenedFileFinder] [My Blog]

Re: How can Dark Rectangle sides?

Le@rner30-Dec-08 21:18

Le@rner

30-Dec-08 21:18

Thanks its done.

IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH

How to Create a child window in SDI(MFC) application?

Abhijit D. Babar30-Dec-08 17:50

Abhijit D. Babar

30-Dec-08 17:50

Hello All,

I am doing an SDI application in MFC(.Net 2008 platform). In my project, when i click on any button, i have to create a child window in the mainframe window. This child window having no caption, title bar, system menu. i want only border for that window. This child window will always be displayed on the Mainframe window, even i click anywhere on the mainframe window.

I have created window using CreateEx() function and Set its position using SetWindowsPos() function. as follwing;

Problem is that, when i minimize the Mainframe window, child window always be there on the screen. i want to change this child window size along with Mainframe window. How can i do this. Please give me any hint with the help of code.
Which flag i have to set while creating the window or in the SetWindowPos() function.?

Thanks in advance.

Number of Processors/Cores

BobInNJ30-Dec-08 15:14

BobInNJ

30-Dec-08 15:14

I am writing an application using C++ and MFC. Is there a way for my application to know how many cores/CPUs are on the machine? The reason I am asking is that it is multi-threaded and I would like to have one worker thread for every core/CPU on the machine. Any ideas?

Thanks

Bob

Re: Number of Processors/Cores

Maxwell Chen30-Dec-08 15:23

Maxwell Chen

30-Dec-08 15:23

GetLogicalProcessorInformation[^]

Maxwell Chen

Re: Number of Processors/Cores

bob1697230-Dec-08 17:25

bob16972

30-Dec-08 17:25

If you need this to work on NT or 2000 then you can use...

SYSTEM_INFO sysInfo={0};
::GetSystemInfo(&sysInfo);
TRACE("Number of Processors = %d\n",sysInfo.dwNumberOfProcessors);

Re: Number of Processors/Cores

BobInNJ31-Dec-08 7:43

BobInNJ

31-Dec-08 7:43

First, I want to thank to two individuals that responded to me.

This second solution seems simpler and better then the first answer. I believe it will work on XP and Vista also. Please correct me if I am wrong about this. Is there any reason to prefer the first solution to the second?

Thanks
Bob

Re: Number of Processors/Cores

bob1697231-Dec-08 10:17

bob16972

31-Dec-08 10:17

BobInNJ wrote:
I believe it will work on XP and Vista also

Thats my understanding. I believe I tested it once on my home laptop (Vista) with a multi-core cpu. I walked away from that test satisfied that the function detected multiple CPU's. However, I've not done an exhaustive test with non-intel chips and such.

error lnk2019 & lnk2001

lolokar30-Dec-08 14:48

lolokar

30-Dec-08 14:48

Hi!
my file looks like:

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdexcept>
#include <iostream>

#include <eo>
#include <ga.h>

using namespace std;

and then remains of FirstBitGA.cpp file of tutorial-lesson1 of EO project (http://eodev.sourceforge.net/,I don't know whether it matters).

I run it in Visual C++ Express Edition (MS Visual Studio 2005, Version 8.0.50727.762 (SP.050727-7600),Microsoft .NET Framework Version 2.0.50727 SP1)

During linking it throws errors:
FirstBitGA.obj : error LNK2019: unresolved external symbol "class std::basic_ostream<char,struct> > & __cdecl operator<<(class std::basic_ostream<char,struct> > &,class eoPrintable const &)" (??6@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@AAV01@ABVeoPrintable@@@Z) referenced in function "void __cdecl main_function(int,char * *)" (?main_function@@YAXHPAPAD@Z)
FirstBitGA.obj : error LNK2001: unresolved external symbol "class eoRng eo::rng" (?rng@eo@@3VeoRng@@A)
FirstBitGA.obj : error LNK2001: unresolved external symbol "private: static int const eoRng::N" (?N@eoRng@@0HB)
FirstBitGA.obj : error LNK2001: unresolved external symbol "private: static unsigned long const eoRng::K" (?K@eoRng@@0KB)
FirstBitGA.obj : error LNK2001: unresolved external symbol "private: static int const eoRng::M" (?M@eoRng@@0HB)
\Projects\eo2\Debug\eo2.exe : fatal error LNK1120: 5 unresolved externals

I sought couple of days on the net and tried plenty of solutions but didn't find any working one. Please help, I would be very pleased. Thanks for your time. Wink | ;)

Re: error lnk2019 & lnk2001

Garth J Lancaster30-Dec-08 23:48

Garth J Lancaster

30-Dec-08 23:48

I downloaded the distro and it was sparse on docco

in eo-1.0\win there's a README file, contents

"This directory contains the project files for Microsoft Visual C++

For Visual Studio 2003 (and 2005) you can go to the eo\win (this)
directory and open the eo.sln file. It allows for the compilation of 4
lib files (which will be placed in eo\win\lib\release and eo\win\lib\debug).
At the moment there are no project/solution files to compile the test
programs (eo\test) or applications (eo\app).

The library files correspond to the .a files under Unix/Linux.
eo.lib -> libeo.a
eoes.lib -> libes.a
eoga.lib -> libga.a
eoutils.lib -> libeoutils.a

The debug versions of the files are named eod.lib, eoesd.lib, eogad.lib and eoutilsd.lib."

Have you built the libraries ? (you'd need to do this first). Then in your tutorial project, you need to tell MS Visual Studio 2005 to link against eo.lib or eoes.lib or eoga.lib or eoutils.lib or their debug versions as shown..

[edit] looking at the makefile for tutorial 1 (see the LIBS line) :-

noinst_PROGRAMS = FirstBitGA FirstRealGA exercise1.3
FirstBitGA_SOURCES = FirstBitGA.cpp
FirstRealGA_SOURCES = FirstRealGA.cpp
exercise1_3_SOURCES = exercise1.3.cpp
LDADD = -L$(top_builddir)/src -L$(top_builddir)/src/ga -L$(top_builddir)/src/utils
LIBS = -lga -leoutils -leo
INCLUDES = -I$(top_srcdir)/src

you'd have to link against eoutils.lib and eo.lib (or eoutilsd.lib and eod.lib)

[/edit]

thats about all I can offer

'g'

Re: error lnk2019 & lnk2001

lolokar31-Dec-08 10:22

lolokar

31-Dec-08 10:22

OK, i tried to build libraries, but it throws lot of errors (fatal errors C1083: Cannot open include files..., but I set include directories to /src of eo project in options->vc++ directories..).
Nevertheless, lib files appeared in win/lib/debug directory only.

Then I linked these debug libraries to my tutorial project (i tried couple variants: through options->vc++ directories,#pragma..,add them to project), but then I get lot of errors like:
1>msvcprtd.lib(MSVCP80D.dll) : error LNK2005: "public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::~basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(void)" (??1?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@XZ) already defined in eoutilsd.lib(eoRNG.obj)

I admit I'm lame at linking, so I appreciate help.

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