Re: displaying HEX value of any integer. [modified] - C / C++ / MFC Discussion Boards

Re: How to reload the content in ifstream?

DevelopmentNoob27-Jul-09 15:08

27-Jul-09 15:08

i try the method you teach already. but still cannot work.
yes, it can run in while loop, but when i use infile.getline, the content i get is "".

i use infile.seekg(0), because in msdn, it say that in text file dun use the second method...
Any ideal about it?

Re: How to reload the content in ifstream?

CPallini27-Jul-09 20:53

CPallini

27-Jul-09 20:53

You're right using the first member function. I didn't notice the MSDN note.

DevelopmentNoob wrote:
but when i use infile.getline, the content i get is ""

You get all empty lines or some ones (maybe there are empty lines in your file)?
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]

CStdioFile Creation fails with exception - no error occurred

Deepak.Prahlad26-Jul-09 23:55

Deepak.Prahlad

26-Jul-09 23:55

Hi All,

I am trying to create a CStdioFile using below code. I plan to create the file where the ".exe" is. If the folder happens to be 'read only' the file creation fails as expected but the exception shows "no error occurred" Sniff | :^)

ie. bRet is FALSE (as expected) when tried to open the file. but the szError is "no error occured" (I guess here it should be "no write permission" or something like that)

Am I doing something wrong in the code? Please help.

BOOL CLoggerDlg::OpenFile(CString szFileName)
{
	CFileException ex;
	BOOL bRet = FALSE;
	if(LogFile.m_hFile == INVALID_HANDLE_VALUE)
	{
		bRet = LogFile.Open(szFileName,CStdioFile::modeCreate | CStdioFile::modeReadWrite | CStdioFile::shareDenyWrite | CStdioFile::modeNoTruncate,NULL);
		if ( !bRet )
		{
			TCHAR szError[1024];
			ex.GetErrorMessage(szError, 1024);
			MessageBox(szError);
		}
	}
	return bRet;
}

Re: CStdioFile Creation fails with exception - no error occurred

CPallini27-Jul-09 0:02

CPallini

27-Jul-09 0:02

You should pass (the address of) ex as last argument of LogFile.Open method,
i.e.

bRet = LogFile.Open(szFileName,CStdioFile::modeCreate | CStdioFile::modeReadWrite | 
   CStdioFile::shareDenyWrite | CStdioFile::modeNoTruncate, &ex);

Re: CStdioFile Creation fails with exception - no error occurred

Deepak.Prahlad27-Jul-09 0:11

Deepak.Prahlad

27-Jul-09 0:11

Thank you for the help.
I corrected the code and now it work as expected
Best regards,
Deepak

Re: CStdioFile Creation fails with exception - no error occurred

Adam Roderick J27-Jul-09 0:12

Adam Roderick J

27-Jul-09 0:12

Try this
FormatMessage and GetLastError instead of CFileException.
LPVOID lpMsgBuf;
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &lpMsgBuf,
0,
NULL );

AfxMessageBox( (LPCTSTR)lpMsgBuf);

Величие Бога не может быть недооценена.

displaying HEX value of any integer.

MahaKh26-Jul-09 23:24

MahaKh

26-Jul-09 23:24

i want to get the Hexadecimal value of an integer....what is the syntex to find it in VC++?

Re: displaying HEX value of any integer. [modified]

Adam Roderick J26-Jul-09 23:32

Adam Roderick J

26-Jul-09 23:32

simply Use %X or
1. method 1
int nHex = 0;
int nDec = 20;
CString csData;
csData.Format( _T( "%x" ), nDec );
nHex = _wtoi( csData.operator LPCTSTR());

2. method 2
cout<<hex<<17;
Smile | :)

=""

<div="" class="ForumSig">Величие Бога не может быть недооценена.

modified on Monday, July 27, 2009 5:47 AM

Re: displaying HEX value of any integer.

CPallini26-Jul-09 23:36

CPallini

26-Jul-09 23:36

See [^].
For instance:

int k = 65535;
printf("%x\n", k);

Re: displaying HEX value of any integer.

bilal haider27-Jul-09 0:42

bilal haider

27-Jul-09 0:42

you may try this one.
int x=20;
cout<<hex<<x; //x=14 in hexadecimal
use oct for octal.

Re: displaying HEX value of any integer.

CPallini27-Jul-09 0:54

CPallini

27-Jul-09 0:54

Oh, thank you, I'll try for sure. Anyway, maybe the OP is more interested... Roll eyes | :rolleyes:

bluetooth code

pramoddohre26-Jul-09 23:05

pramoddohre

26-Jul-09 23:05

i want code for bluetooth driver can handle microcontroller.
help of microcontroller recive bluetooth data

Re: bluetooth code

CPallini26-Jul-09 23:17

CPallini

26-Jul-09 23:17

Could you please elaborate?

BTW:

pramoddohre wrote:
i want code for

This isn't the best approach to this forum, please read guidelines [^].
Smile | :)

Re: bluetooth code

killabyte26-Jul-09 23:26

killabyte

26-Jul-09 23:26

u want a bluetooth protocol stack by the sounds

http://www.thewirelessdirectory.com/Bluetooth-Software/Bluetooth-Protocol-Stack.htm[^]

HeaderCtrl

kumar sanghvi26-Jul-09 22:51

kumar sanghvi

26-Jul-09 22:51

Hi,
HOw to increase the width of the item in HeaderCtrl...bcos when the font in the Item is Increased the Text is getting ellipsed...

Re: HeaderCtrl [modified]

Adam Roderick J26-Jul-09 22:54

Adam Roderick J

26-Jul-09 22:54

Please refer the code..
you can see the function that is needed for u Smile | :)

http://www.codeguru.com/cpp/controls/listview/headercontrol/article.php/c903[^]

Smile | :)

Величие Бога не может быть недооценена.

modified on Monday, July 27, 2009 5:06 AM

Re: HeaderCtrl

«_Superman_»26-Jul-09 22:56

«_Superman_»

26-Jul-09 22:56

There is an article on CodeProject called Customizing the header control in a ListView[^] which does this.

«_Superman_»
I love work. It gives me something to do between weekends.

Re: HeaderCtrl [modified]

kumar sanghvi26-Jul-09 23:23

kumar sanghvi

26-Jul-09 23:23

In Onpaint of Header im trying as follows..

CHeaderCtrl* pHeader = GetHeader();
int nCount = pHeader->GetItemCount();
int nItem = nCount;
CDC dcMem;
HDC hDC =dcMem.GetSafeHdc();
HDITEM hdi;
while(nItem--)
{
pHeader->GetItemRect(nItem, rItem);
::GetTextExtentPoint(hDC,sText,sText.GetLength(),&size);
hdi.cxy=size.cx;
pHeader->SetItem(nItem,&hdi);
}
but the item of the headerCtrl is not increased

modified on Monday, July 27, 2009 5:29 AM

Re: HeaderCtrl

kumar sanghvi27-Jul-09 0:20

kumar sanghvi

27-Jul-09 0:20

please let me know how to increase the width of the item of HeaderCtrl...

Re: HeaderCtrl

«_Superman_»27-Jul-09 2:02

«_Superman_»

27-Jul-09 2:02

CListBox and CListCtrl both have a method called SetColumnWidth.

«_Superman_»
I love work. It gives me something to do between weekends.

Howto Load Windows Standard Modem through Code

matiboyin26-Jul-09 22:35

matiboyin

26-Jul-09 22:35

Hello,

I have an application within which I have created a virtual port on which I need to load a Windows Standard 33600 bps modem.
How can I do this through my code or some command line instructions ?

I can not use the Add Hardware Wizard for this job.

regards,
Abhiroop

Re: Howto Load Windows Standard Modem through Code

«_Superman_»26-Jul-09 22:53

«_Superman_»

26-Jul-09 22:53

You could probably use the UpdateDriverForPlugAndPlayDevices[^] function to load the driver by specifying an INF file.

«_Superman_»
I love work. It gives me something to do between weekends.

seamlees play the clips

raj157626-Jul-09 21:11

raj1576

26-Jul-09 21:11

Is there another way to seamlees play the clips rather than gmfbridge?

GmfBridge dynamic clip play from the list problem

raj157626-Jul-09 19:55

raj1576

26-Jul-09 19:55

Hi All

I am using Gmfbridge to play seamless play the clips from the list. My problem is that , I want to play the clips from the list dynamically that is
after loading the clips in the gmfbridge when i select such that 5th clip from the list then playing start from the 5th clip in the list not from first clip.

how do i this.

Confused | :confused:

Re: GmfBridge dynamic clip play from the list problem

CPallini26-Jul-09 21:09

CPallini

26-Jul-09 21:09

Well, you may download the source code and have a look at it.
Smile | :)

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.