C / C++ / MFC

I would like to calculate pi.

2-Sep-03 4:08

thanks that helped me...but only when i moved it after the ellipse drawing...

thanks again

Ask not what your application can do for you,
Ask what you can do for your application

S^nyp1-Sep-03 4:23

S^nyp

1-Sep-03 4:23

Anyone here knows how to calculate pi in visual c++ 6 to the 100ths maybe less maybe more. I just want to know how maybe an example but I would appreciate a method.

<marquee>Universal Project... Soon to be a .net

Ted Ferenc1-Sep-03 4:53

Ted Ferenc

1-Sep-03 4:53

as the saying goes http://www.anvari.org/fun/Computer/Bart_Uses_Google.html[^]

I hope you won't take any offence Smile | :)

try the following google search

http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=utf-8&q=calculate+pi+visual+C%2B%2B&btnG=Google+Search[^]

It is amazing what you can accomplish if you do not care who gets the credit. - Harry S Truman

Dominik Reichl1-Sep-03 6:32

Dominik Reichl

1-Sep-03 6:32

Ted Ferenc wrote:
as the saying goes http://www.anvari.org/fun/Computer/Bart_Uses_Google.html

Laugh | :laugh:

Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??
(doesn't work on NT)

User 66581-Sep-03 5:31

User 6658

1-Sep-03 5:31

Pick your favorite algorithm and do it yourself! Smile | :)

There are enough ready algorithms written in C/C++, just do a google search.

modified 12-Sep-18 21:01pm.

STL deque container question

Anonymous1-Sep-03 6:52

Anonymous

1-Sep-03 6:52

PI/4=1-1/3+1/5-1/7+1/9-1/11.....

YaronNir1-Sep-03 3:59

1-Sep-03 3:59

hi all,

I know the STL class deque is a sort of a sorted vector.

i have a data class as follows:

class CMyData
{
public:
   CString m_szStr1;
   CString m_szStr2;
}

then i insert this data class to the deque as follows:

m_deque.push_back(pMyData);

what do i need to write to determine the sorting rule??? according to what the deque sorts its elemets???

thanks in advanced

Yaron

Ask not what your application can do for you,
Ask what you can do for your application

ZoogieZork1-Sep-03 4:20

ZoogieZork

1-Sep-03 4:20

Actually, a std::deque is not like a sorted vector -- it's a vector that has constant time insertion/removal from both ends (instead of just the end). The name "deque" means "double-ended queue".
http://www.sgi.com/tech/stl/Deque.html[^]

If you want a sorted collection, use a std::set.

- Mike

YaronNir1-Sep-03 4:21

1-Sep-03 4:21

hi,

thanks for the reply, i know understand what you mean....

i can't use set because i can allow duplicated items....what else can u suggest?

thanks again

Yaron

Ask not what your application can do for you,
Ask what you can do for your application

ZoogieZork1-Sep-03 4:24

ZoogieZork

1-Sep-03 4:24

YaronNir wrote:
i can't use set because i can allow duplicated items

Take a look at std::multiset:
http://www.sgi.com/tech/stl/multiset.html[^]

- Mike

YaronNir1-Sep-03 4:29

String pointers (using stl)

1-Sep-03 4:29

thanks a lot man Smile | :)

that helped me!

Ask not what your application can do for you,
Ask what you can do for your application

Wrapping Popup Menus

Neal Stublen1-Sep-03 3:32

Neal Stublen

1-Sep-03 3:32

Is it possible to easily wrap a popup menu into multiple columns. I would like something like the Start menu on Windows XP, but haven't been able to determine if this is a non-standard menu that Microsoft has implemented. I don't see anything in the SDK documentation to select between scrolling or wrapping popup menus.

Thanks.

Neal Stublen
http://www.awesoftware.com

Re: Wrapping Popup Menus

Neville Franks1-Sep-03 10:49

Neville Franks

1-Sep-03 10:49

You may be able to get somewhere using Owner Draw menus, other than that I think you are on your own.

Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com

RChin1-Sep-03 2:52

RChin

1-Sep-03 2:52

Now, maybe its because its Monday, or maybe I truely am a dumbass; But I've got a bit of a problem code involving string pointers.

Let me explain: I've got a function that constructs a string and returns:

LPCTSTR CSomeClass::GetSerialString()
{
	std::ostringstream strstream;
	strstream<<	std::setfill((TCHAR)'0')<<\
				std::setw(5)<<m_nSerial;
	strstream<<std::flush;

	//
	// this string should now be 5 characters long.
	ASSERT( (strstream.str()).length() == 5 );	

	return (strstream.str()).c_str(); //<-- contains the correct string characters}
}

Whenever this function is called using the following code:

string strSerial;
strSerial = GetSerialCodeString(); //<-- strSerial is gibberish

The strSerial variable points to an invalid string array, even though at the point of tracing, the GetSerialString function contains the correct string.
Can someone explain why the LPCTSTR return value gets destroyed?

I Dream of Absolute Zero

Re: String pointers (using stl)

Joaquín M López Muñoz1-Sep-03 3:01

Joaquín M López Muñoz

1-Sep-03 3:01

Can someone explain why the LPCTSTR return value gets destroyed?

Because the LPCSTR returned is a pointer to the internal string of strstream, and strstream (and its asocciated string) is destroyed as soon as GetSerialCodeString exits. Use a smarter data type like string itself:

std::string CSomeClass::GetSerialString()
{
  // as before
  return strstream.str();
}
...
string strSerial;
strSerial=GetSerialCodeString();

This ought to work because string has an overloaded copy constructor that takes care of safely moving the internal resources between objects.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: String pointers (using stl)

RChin1-Sep-03 5:58

RChin

1-Sep-03 5:58

cheers dude!

I Dream of Absolute Zero

Icons in the application bar

Piero B1-Sep-03 2:40

Piero B

1-Sep-03 2:40

In the windows right corner there is a set of icons which represents some application running on PC. How can I add a new icon to this set, how can I interact with this one?
Thanks

Telecommunication Engineer.
He works from more than 3 years as a software consultant over distributed systems developed in C++ or Java and based on a CORBA or DCOM tecnology. Knowledge of relationship and object DB

Re: Icons in the application bar

Trollslayer1-Sep-03 4:15

Trollslayer

1-Sep-03 4:15

The area you describe is called the system tray.
There is a sample project by Chris to guide you:
Tray Calendar[^]

Elaine Rose | [Rose]

The tigress is here Big Grin | :-D

Re: Icons in the application bar

Anonymous2-Sep-03 4:27

Anonymous

2-Sep-03 4:27

Thanks

MAPI

ranjjj1-Sep-03 2:09

ranjjj

1-Sep-03 2:09

hello sir
I have written a MAPI client program in C++..
what all softwares do i need to install for this program to run..
is visual studio enough..
or is there anyother simple software for MAPI to get executed??
actually i have to run tihs porgram in a fresh machine..what al softwares do i need for tis C++ MAPI client to run onthe fresh machine??
do i needto install microsoft exchange server too..coz' i remember reading somewhere that
"The information here only applies to MAPI client applications that access Exchange."
what else do i need to install for my program to run??

ranjani

Vitali Halershtein1-Sep-03 2:19

Vitali Halershtein

1-Sep-03 2:19

Hi,

You pass mapi questions during last month Smile | :)

To install mapi you need register Msmapi32.ocx using
regsvr32.
In some casees you will need to have file Msmapi.srg with
licenses.

Vitali
http://www.creative-case.com[^]

ranjjj1-Sep-03 2:29

ranjjj

1-Sep-03 2:29

what is that msmapi32.ocx ??how do i register into it??

or is the file.. msmapi.srg enough for running my program?

ranjani

Vitali Halershtein1-Sep-03 2:35

Vitali Halershtein

1-Sep-03 2:35

1. copy MSMAPI*.* files in the system directory
2. run regsvr32.exe msmapi32.ocx to register

Vitali
http://www.creative-case.com[^]