C / C++ / MFC Discussion Boards

Re: GetVolumeInformation in a Simple DLL

logicon8-Nov-08 5:50

logicon

8-Nov-08 5:50

Probably you have not read my question.

I want to use the API in C (not C#) code.

Need help with code

dtaylor018-Nov-08 2:57

dtaylor01

8-Nov-08 2:57

I have to write a C++ code that computes the greatest common divisor of two numbers.
When Declaring x, y, temp, remainder as a Integer is this right? Or can someone help me in the right direction.

int x = 0;<br />
    int y = 0;<br />
<br />
    if (x < y) then<br />
       <br />
    cout << temp = x; <br />
	cin >> x = y; <br />
    cout << y = temp 	<br />
	<br />
	if else remainder = x % y

Re: Need help with code

David Crow8-Nov-08 3:49

David Crow

8-Nov-08 3:49

A recursive solution might look like:

int getGCD( int x, int y )
{
    if (0 == y)
        return x;
    else
        return getGCD(y, x % y);
}

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

Re: Need help with code

Member 41945938-Nov-08 4:00

Member 4194593

8-Nov-08 4:00

<br />
int x = 0;<br />
int y = 0;<br />
int A = 0;<br />
int B = 0;<br />
int R = 0;<br />
<br />
Read x and y<br />
<br />
if (x >= y)<br />
{<br />
  A = x;<br />
  B = y;<br />
}<br />
else<br />
{<br />
  A = y;<br />
  B = x;<br />
}<br />
<br />
R = (A % B);<br />
<br />
while (R != 0)<br />
{<br />
  A = B;<br />
  B = R;<br />
  R = (A % B);<br />
}<br />
<br />
Report "the GCD of x and y is B"<br />

Dave.

GetTotalHours() ?

Le@rner8-Nov-08 0:59

Le@rner

8-Nov-08 0:59

Hi all,

ColeDateTime m_starttime_ole,m_endtime_ole;
	
//if m_starttime_ole=16:00:00 PM
//m_endtime_ole=00:00:00

COleDateTimeSpan diff=(m_starttime_ole-m_endtime_ole);
int hour=(int)diff.GetTotalHours(); 	

CString Value;
Value.Format(_T("%d"),hour);
AfxMessageBox(Value);

i m using this to get total hours.

it gives total hours 16,while actual total hours are 8.

please tell me correct way to calculate total hour diffrence between two timings.

please help me for 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: GetTotalHours() ?

David Crow8-Nov-08 3:45

David Crow

8-Nov-08 3:45

"_$h@nky_" wrote:
it gives total hours 16...

Which is correct, since 2/3 of a 24-hour day is ~16 hours.

Now if you really wanted a difference of 8 hours, you need to set m_endtime_ole to be one day after m_starttime_ole. As it stands, they are the same day.

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

Re: GetTotalHours() ?

Le@rner9-Nov-08 19:45

Le@rner

9-Nov-08 19:45

Thanks

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

Is the MFC dead

Jooooe8-Nov-08 0:16

Jooooe

8-Nov-08 0:16

Hello every body

I've just down loaded visual studio 2008 C++ and is
only supports .NET. Is Microsoft hoping that the MFC with wither
and die.

Joe

Re: Is the MFC dead

Cedric Moonen8-Nov-08 0:17

Cedric Moonen

8-Nov-08 0:17

If they did the same as they did for VC2005, the MFCs are not included in the express edition. You have to buy the standard edition in order to have the MFC's.

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: Is the MFC dead

bob169728-Nov-08 2:55

bob16972

8-Nov-08 2:55

Jooooe wrote:
Is Microsoft hoping that the MFC with wither
and die.

That has probably been the case since about 2002/2003. MFC still has a pulse but they have beaten it down pretty hard. We still use it for standalone apps as it has the most flexible structure and you get the sourcecode so you can tweak the MFC code out of tight spots.

If you buy the Professional Edition of Visual Studio 2008 and download the Visual C++ 2008 Feature Pack, you will find MFC has support for some new goodies like Office ribbons and the docking bars have gotten pretty advanced.

Re: Is the MFC dead

Hamid_RT8-Nov-08 3:27

Hamid_RT

8-Nov-08 3:27

Jooooe wrote:
Is the MFC dead

No its very healthy.

Re: Is the MFC dead

CPallini8-Nov-08 4:56

CPallini

8-Nov-08 4:56

Jooooe wrote:
Is the MFC dead

Nope. It is not free, however. Roll eyes | :rolleyes:

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]

Re: Is the MFC dead

Mark Salsbery8-Nov-08 6:02

Mark Salsbery

8-Nov-08 6:02

Jooooe wrote:
Hello every body

Hi Doctor Nick! (reference[^])

If MFC was dead they'd give it to you free in the download Smile | :)

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

Windows mobile

Praful Nand N7-Nov-08 22:05

Praful Nand N

7-Nov-08 22:05

How to open excel file in Windows mobile MFC application??

Why do key-loggers repeat all characters written in Microsoft Word? [modified]

Joseph Marzbani7-Nov-08 20:45

Joseph Marzbani

7-Nov-08 20:45

I've installed several key-logger on my system one after the other (not at the same time Laugh | :laugh:

). Almost all have worked correctly except one thing!

when the user types something in Microsoft Office programs like MS Word, each single character is registerd several times in the log file! for example if the user has typed the word "Hello World!", it's registered as "HHHHHeeeeellllllllllooooo WWWWWooooorrrrrlllllddddd!!!!!". I've already tried to design my own key-logger! but the same problem occured.

Thank you masters!

modified on Saturday, November 8, 2008 3:16 AM

Re: Why do key-loggers repeat all characters written in Microsoft Word?

Iain Clarke, Warrior Programmer8-Nov-08 13:02

Iain Clarke, Warrior Programmer

8-Nov-08 13:02

This is a stab in the dark, but I'm guessing by key logger you mean a keyboard hook, and that you are reporting both WM_KEYDOWN AND WM_KEYUP.

Iain.

Re: Why do key-loggers repeat all characters written in Microsoft Word?

Joseph Marzbani8-Nov-08 17:11

Joseph Marzbani

8-Nov-08 17:11

Yes, I meant Keyboard Hooks, and at least in my own app, I'm sure I was processing ONLY WM_KEYDOWN.

Thank you masters!

How to determine if the user is connected to the internet or not?

Joseph Marzbani7-Nov-08 20:33

Joseph Marzbani

7-Nov-08 20:33

I want to know how to determine if the user is connected to the Internet or not. But I have a limitation, that's I MUST use pure Win32/64 API only. any help?

Thank you masters!

Re: How to determine if the user is connected to the internet or not?

Fernando A. Gomez F.7-Nov-08 20:53

Fernando A. Gomez F.

7-Nov-08 20:53

Try InternetCheckConnection[^] from the WinInet API. InternetAttemptConnect[^] might also serve you.

Stupidity is an International Association - Enrique Jardiel Poncela
Die deutsche Sprache sollte sanft und ehrfurchtsvoll zu den toten Sprachen abgelegt werden, denn nur die Toten haben die Zeit, diese Sprache zu lernen. - Mark Twain

Re: How to determine if the user is connected to the internet or not?

Joseph Marzbani7-Nov-08 21:28

Joseph Marzbani

7-Nov-08 21:28

Thank you very much ... Rose | [Rose]

Re: How to determine if the user is connected to the internet or not?

PJ Arends7-Nov-08 21:18

PJ Arends

7-Nov-08 21:18

http://www.codeproject.com/script/comments/forums.asp?msg=1367563&forumid=1647#xx1367563xx[^]

http://msdn.microsoft.com/en-us/library/aa365953(VS.85).aspx[^]

Use GetIpForwardTable and look for a forwarding address of 0.0.0.0. If the address is found then you are connected to the internet.

You may be right
I may be crazy
-- Billy Joel --

Within you lies the power for good - Use it!

Re: How to determine if the user is connected to the internet or not?

Joseph Marzbani7-Nov-08 21:30

Joseph Marzbani

7-Nov-08 21:30

Thank you for your reply ... Rose | [Rose]

USB port working

zon_cpp7-Nov-08 20:18

zon_cpp

7-Nov-08 20:18

hi!
i want a sample for USB working, sending and recieving data to USB port
thank you

Zo.Naderi-Iran

Re: USB port working

Cedric Moonen8-Nov-08 0:21

Cedric Moonen

8-Nov-08 0:21

Working with a USB is not like working with a serial port. You can't simply open the port and read/write data. Instead you have to get a handle from a device driver that is supplied with the device you want to communicate to.
So in brief, you never access the port directly but a driver and you never 'know' that you in fact access the USB port through the driver. You simply communicate with a driver. To get the handle, you have to use CreateFile and once you have the handle, you can write or read data using WriteFile/ReadFile. You can exchange driver specific information using DeviceIOControl.

All of these things are very specific to the driver (and device) you are accessing. So, if you want to information, you will need to be much more specific and tell us which device you want to access.

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: USB port working

zon_cpp8-Nov-08 20:00

zon_cpp

8-Nov-08 20:00

for example, an USB hard lock.

Zo.Naderi-Iran

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