C / C++ / MFC Discussion Boards

Re: iostream.h/fstream.h???

toxcct22-Apr-04 0:19

toxcct

22-Apr-04 0:19

try to include instead :
#include <iostream>
#include <fstream>

TOXCCT >>> GEII power

Re: iostream.h/fstream.h???

Paul Ranson22-Apr-04 0:22

Paul Ranson

22-Apr-04 0:22

"iostream.h" and "fstream.h" are not part of C++. Look at "iostream" and "fstream" and then the 'std::' scope.

#include <iostream>
#include <iomanip>
#include <fstream>

void SomeFuncToReadFile ( const char * sFile )
{
   std::ifstream in ( s ) ;
   if ( !in )
   {
      std::cerr << "Couldn't open input file : " << s << std::endl ;
      return ;
   }
   in.unsetf(std::ios::skipws) ;

   // do whatever with the file
}

Paul

Cleanest way to convert a two character string like "4D" to it's hex-equivalent-number ?

ohadp21-Apr-04 23:57

ohadp

21-Apr-04 23:57

I currently do:

_stscanf(string, L"%x", &number);

it doesn't seem like any of the atoi/l functions can handle hexa-decimal input,

any suggestions for something cleaner, or is as clean as it gets ? Smile | :)

Re: Cleanest way to convert a two character string like "4D" to it's hex-equivalent-number ?

toxcct22-Apr-04 0:13

toxcct

22-Apr-04 0:13

do this :

<font style="color:blue;">char</font> str[2];            <font style="color:green;">// stored with your two characters</font>
<font style="color:blue;">unsigned char</font> ucConvertedNumber,
              MSB,              <font style="color:green;">// most significant bits</font>
              LSB;              <font style="color:green;">// less significant bits</font>

LSB = ((str[1] >= <font style="color:purple;">'0'</font>) && (str[1] <= <font style="color:purple;">'9'</font>)) ? str[1] - <font style="color:purple;">'0' </font>:
      ((str[1] >= <font style="color:purple;">'a'</font>) && (str[1] <= <font style="color:purple;">'f'</font>)) ? str[1] - <font style="color:purple;">'a' </font>+ 10 :
      ((str[1] >= <font style="color:purple;">'A'</font>) && (str[1] <= <font style="color:purple;">'F'</font>)) ? str[1] - <font style="color:purple;">'A' </font>+ 10 : -1; <font style="color:green;">// this happens only if your string is not a correct hexa representation</font>
<font style="color:green;">// do some error checking here...</font>
 
MSB = ((str[0] >= <font style="color:purple;">'0'</font>) && (str[0] <= <font style="color:purple;">'9'</font>)) ? str[0] - <font style="color:purple;">'0' </font>:
      ((str[0] >= <font style="color:purple;">'a'</font>) && (str[0] <= <font style="color:purple;">'f'</font>)) ? str[0] - <font style="color:purple;">'a' </font>+ 10 :
      ((str[0] >= <font style="color:purple;">'A'</font>) && (str[0] <= <font style="color:purple;">'F'</font>)) ? str[0] - <font style="color:purple;">'A' </font>+ 10 : -1; <font style="color:green;">// this happens only if your string is not a correct hexa representation</font>
<font style="color:green;">// do some error checking here...</font>
 
MSB = MSB << 4;
 
ucConvertedNumber = MSB | LSB;

you've got it...

you can nox do :

printf(<font style="color:purple;">"Decimal form     :%d\n"
       "Hexadecimal form :%x\n"</font>,
       ucConvertedNumber,
       ucConvertedNumber);

TOXCCT >>> GEII power

Re: Cleanest way to convert a two character string like "4D" to it's hex-equivalent-number ?

jmkhael22-Apr-04 0:30

jmkhael

22-Apr-04 0:30

long strtol( const char *nptr, char **endptr, int base );

acString

strtol(acString, NULL, 16);

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

Re: Cleanest way to convert a two character string like "4D" to it's hex-equivalent-number ?

ohadp22-Apr-04 0:42

ohadp

22-Apr-04 0:42

this is the function i was looking for Smile | :)

Re: Cleanest way to convert a two character string like "4D" to it's hex-equivalent-number ?

toxcct22-Apr-04 1:02

toxcct

22-Apr-04 1:02

ok for a function, but understand what it does because it isn't a standard function...

TOXCCT >>> GEII power

Re: Cleanest way to convert a two character string like "4D" to it's hex-equivalent-number ?

Prakash Nadar22-Apr-04 1:05

Prakash Nadar

22-Apr-04 1:05

Nice joke.

God is Real, unless declared Integer.

Re: Cleanest way to convert a two character string like "4D" to it's hex-equivalent-number ?

toxcct22-Apr-04 1:39

toxcct

22-Apr-04 1:39

ok, i was thinking of another.
just verified.

TOXCCT >>> GEII power

Client server problem

VBZ21-Apr-04 23:31

VBZ

21-Apr-04 23:31

hi ppl,
I am creating a Client server application using Asyncsockets using MFC.
my application is running well on the local server.
but the problem starts when it's client side is used on other computers on lan
Like
for the first time the client connects to the server every thing goes on smoothly but when the connection closes from the client side the server closes all the connection but on the client side the connection goes to the FIN_WAIT2 and reamins there and no message can be sent from there on so the application halts.
I donn know what to do help me?

Re: Client server problem

ThatsAlok22-Apr-04 4:03

ThatsAlok

22-Apr-04 4:03

ok i think i also faced similar situation when i encounter this problem.
the solution is that you override the function OnClose()
of AsyncSocket of MFC

and In OnClose()
close the socket connectiong socket ok
i think it work Rose | [Rose]

Alok Gupta
visit me at http://alok.stormpages.com

Re: Client server problem

VBZ25-Apr-04 21:16

VBZ

25-Apr-04 21:16

hi alok,
thanks a lot for ur reply,
but eventually i figured out my problem was not related with opening or closing but what i am using is ASyncSockets which are by default NON blocking sockets as a results the connection closes automatically if there is no buffer recieved so i used CSocket class ie a Blocking Socket class as a result untill unless the Buffer is recieved the connection is alive.
thanks a lot again

Can we use the "Source Browser" in VC.net

hottang21-Apr-04 23:22

hottang

21-Apr-04 23:22

This function can be founded in tools menu in VC 6.0, however, I cann't get any idea in VC.net. Thanks. Confused | :confused:

Re: Can we use the "Source Browser" in VC.net

Maxwell Chen21-Apr-04 23:33

Maxwell Chen

21-Apr-04 23:33

I only have Visual Studio .NET 2002 installed.

The similar one is "Object Browser" (Ctrl - Alt - J) found in Visual Studio .NET 2002.

Maxwell Chen

Re: Can we use the "Source Browser" in VC.net

hottang21-Apr-04 23:57

hottang

21-Apr-04 23:57

yes, I have found it. And how can we use the functions such as Call Graph or Caller Graph in Source Browser. Thanks.

Re: Can we use the "Source Browser" in VC.net

Maxwell Chen22-Apr-04 16:15

Maxwell Chen

22-Apr-04 16:15

I dunno. Even the "Browse Information" fails! Dead | X|

Maxwell Chen

Problem with sizing

ykutanoor21-Apr-04 23:01

ykutanoor

21-Apr-04 23:01

Sir,

I am integrating flash with VC++.

I am using Dialog Based App.

I inserted this Active X Control.

I wanted to show both this Control and Dialog Window in a maximized state.

I called ShowWindow(SW_MAXIMIZED) in OnInitDialog.

When I execute the App I get the main window in maximized but the control in that is not at all maximized.
Pls help.
Regards
Chintu

Re: Problem with sizing

Cedric Moonen22-Apr-04 1:13

Cedric Moonen

22-Apr-04 1:13

You'll have to move yourself the control at the size and position you want based on the client coordinates of the parent window.
Take a look at MoveWindow in the MSDN.

CImageList + CTreeCtrl problem

YaronNir21-Apr-04 22:57

YaronNir

21-Apr-04 22:57

Hi all,

I have my class that Inherites from CTreeCtrl.
I override OnPain() and i draw the items myself.
next to each item i am trying to draw an image

i use the following code:

// creating the bitmap:
m_imageOptions.Create(IMAGE_DIMENTIONS,
		  IMAGE_DIMENTIONS,
		  ILC_COLOR24 | ILC_MASK,
		  MAX_OPTIONS_NUM,
		  0);

// drawing the bitmap OnPaint() override
hBmp = pDlgInf->GetBmp();
CBitmap bmp;
if (NULL != hBmp)
{
 bmp.Attach(hBmp);
 iImage = m_imageOptions.Add(&bmp,TRANSPARENT_CLR);
 bmp.Detach();
 ::DeleteObject(hBmp);
}				
		
CPoint pnt(rc.left + SPACE_WIDTH / 5,rcText.top);
m_imageOptions.Draw(pDC,iImage,pnt,ILD_TRANSPARENT);

// don't handle the OnEraseBkgrnd
BOOL CPrfTreeCtrl::OnEraseBkgnd(CDC* pDC) 
{
	return TRUE;
}

problem:
I manage to see the image next to the item, but if i drag my dialog (the tree
is placed over a dialog), outside of the screen boundaries and then drag it
back within the screen boundaries, the image is gone...other drawing of the tree (such as the items) are correct....

what am i doing wrong? can any1 help?

thanks in advanced

Yaron

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

How to create a list ctrl with transparent background?

Avraham21-Apr-04 22:27

Avraham

21-Apr-04 22:27

Hi,
Please help me.
I need to draw a list control that is placed on a diagram and it should be transparent.

Re: How to create a list ctrl with transparent background?

Rob Caldecott21-Apr-04 23:05

Rob Caldecott

21-Apr-04 23:05

You can display an image as the list control background using the following code:

LVBKIMAGE image;
memset(&image, 0, sizeof(image));
image.ulFlags = LVBKIF_STYLE_NORMAL|LVBKIF_SOURCE_URL;
image.pszImage = szFileName;
image.xOffsetPercent = 50;
image.yOffsetPercent = 50;

SendMessage(m_hListView, LVM_SETBKIMAGE, 0, (LPARAM)&image);
SendMessage(m_hListView, LVM_SETTEXTBKCOLOR, 0, CLR_NONE);

The Rob Blog

Re: How to create a list ctrl with transparent background?

Avraham21-Apr-04 23:53

Avraham

21-Apr-04 23:53

Thanks a lot,
It works perfectly.

Rotating bitmap around its center

Gadjuka21-Apr-04 21:57

Gadjuka

21-Apr-04 21:57

Hi!
I'm trying to get a bitmap to rotate. I want the bitmap to rotate around its midpoint (or an abitrary point)
I first used the formula:

<br />
xNew = (x * cosTemp) - (y * sinTemp);<br />
yNew = (x * sinTemp) + (y * cosTemp);<br />

but this only rotated the bitmap around the upper-left corner, and therefore I changed to this:

<br />
xNew = ((x * cosTemp) - (y * sinTemp)) + xRotAxis;<br />
yNew = ((x * sinTemp) + (y * cosTemp)) + yRotAxis;<br />

now the image is rotating around the x-and yRotAxis, BUT at the upper-left corner of the surface and thus hiding 3/4:s of the picture!

How do I make it rotate around its center at the surfaces' center? Confused | :confused:

Help with CSplitterWnd->CreateView method,trying to load a CDialog derived class

Victor Nikol21-Apr-04 21:25

Victor Nikol

21-Apr-04 21:25

Help with CSplitterWnd->CreateView method,trying to load a CDialog derived class
When I sply a window in two, I use on the left frame a class derived from CImageView,and on the right frame a class derived from CFormView. No problem here. But if I change the right frame class to another one derived from CDialog,is not working.How can I solve this?

Help finding old intel MMX application notes

uus9921-Apr-04 20:58

uus99

21-Apr-04 20:58

I'm just starting to program using MMX, but i couldnt find old intel MMX application notes on the website. It seems the link has changed, i tried searching for it but couldnt find it. Can anyone help me what is the link to intel mmx application notes?

I'm trying to find this and others,

Color Conversion from YUV12 to RGB Using Intel MMX™ Technology

Old link, but cannot find it.
http://developer.intel.com/drg/mmx/appnotes/ap548.htm

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