C / C++ / MFC Discussion Boards

Re: GetSysColor Weirdness

PJ Arends20-Dec-05 8:15

PJ Arends

20-Dec-05 8:15

John Simmons / outlaw programmer wrote:
i think i can be pretty sure that function will work.

One would think that GetSysColor would work too, but in your case it appears to not be. GetSysColorBrush will return NULL on error, where as GetSysColor does not have a reliable error check mechanism. Also if GetSysColorBrush(COLOR_INFOBK) also returns a white brush then your system settings may not be what you think they are.

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Re: GetSysColor Weirdness

#realJSOP20-Dec-05 10:37

#realJSOP

20-Dec-05 10:37

Actually, it was stupid programmer tricks. My fault entirely. Smile | :)

Nevermind.

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CTreeCtrl

Ivan Cachicatari20-Dec-05 6:39

Ivan Cachicatari

20-Dec-05 6:39

Hi guys,

How can I change the Font for an individual item of a CTreeCtrl?

Thanks in advance.

Ivan Cachicatari Blog[^]
www.latindevelopers.com

Re: CTreeCtrl

RChin20-Dec-05 9:54

RChin

20-Dec-05 9:54

The easiest option would be to handle custom drawing. The mechanism is pretty straight forward. Take a look at the NM_CUSTOMDRAW message in the MSDN. I couldn't see any articles for tree controls, but this[^] article for List Controls got me first started.

I Dream of Absolute Zero

Re: CTreeCtrl

Jack Puppy20-Dec-05 10:46

Jack Puppy

20-Dec-05 10:46

<br />
SetItemState(hItem, TVIS_BOLD, TVIS_BOLD);<br />

Bernie (Boom Boom) Geoffrion worked Atlanta Flames games in the 1970s with the splendid Jiggs McDonald. One night, Geoffrion said, "Jiggs, there are only three things to hockey: shooting and skating." McDonald said, "Right, Boomer. And what's the third?" The exasperated Geoffrion replied," Jiggs, that's the three. Shooting. And. Skating."

Re: CTreeCtrl

Ivan Cachicatari26-Dec-05 8:26

Ivan Cachicatari

26-Dec-05 8:26

Thanks!

Works fine.

Ivan Cachicatari Blog[^]
www.latindevelopers.com

to find and close empty word document out of many instances of word document

anku12320-Dec-05 6:23

anku123

20-Dec-05 6:23

in my application i have multiple instance of Microsoft Word document and i need to close one perticular instance of Word which has no characters in it(i.e. close empty word document out of many instances). it should be a function and return value should be 1 if there is such document of Word which is empty and 0 if there is no such document on

can any one help me out with this problem ?

-anku

anku

Function to find out what files there are in a folder?

KevinSheedy20-Dec-05 5:11

KevinSheedy

20-Dec-05 5:11

Is there an easy way to do the following:
1) find out how many files there are in a particular folder
2) find out the names of the files.

The simpler the solution the better.
thanks

KevinSheedy

Re: Function to find out what files there are in a folder?

C^hris L^osinger20-Dec-05 5:27

C^hris L^osinger

20-Dec-05 5:27

_findfirst + _findnext

but, i always use this: http://www.codeproject.com/file/sadirread.asp[^]

Cleek | Image Toolkits | Thumbnail maker

Re: Function to find out what files there are in a folder?

David Crow20-Dec-05 10:18

David Crow

20-Dec-05 10:18

Use the FindFirstFile()/FindNextFile() pair for both.

"Take only what you need and leave the land as you found it." - Native American Proverb

Re: Function to find out what files there are in a folder?

ThatsAlok20-Dec-05 22:20

ThatsAlok

20-Dec-05 22:20

KevinSheedy wrote:
The simpler the solution the better.

what about CFileFind MFC Class

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cheers,
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VC Forum Q&A :- I/ IV

displaying Bytes in hex format

bachirzantou20-Dec-05 4:55

bachirzantou

20-Dec-05 4:55

Hi,

Could someone help me modify the following code in order to dispaly in hex format the received bytes from a serial port.

<br />
    CCom *pCom=(CCom*)ch;<br />
    char *szReceive;<br />
    int nr;<br />
    szReceive = new char [(nr=(pCom->SizeUsedInRXBuf()+1))];	<br />
    memset(szReceive,0,nr);	<br />
    pCom->ReadBuffer(szReceive,nr-1);<br />
    CString str,toto;<br />
    m_Edit.GetWindowText(str);<br />
    str+=szReceive;<br />
    delete [] szReceive;	<br />
    m_Edit.SetWindowText(str+"\r\n");

Re: displaying Bytes in hex format

C^hris L^osinger20-Dec-05 5:06

C^hris L^osinger

20-Dec-05 5:06

this is a function i use to convert BYTE arrays to hex strings. maybe it will help...

CString HexDump(BYTE *pData, DWORD dwSize, int imax)
{
	CString out;

	for (DWORD i=0; i < dwSize; i++)
	{
		CString f;

		if (pData[i]<16)
			f.Format("0%x", pData[i]);
		else
			f.Format("%x", pData[i]);
		
		out+=f;
	}

   if (imax > 0 && imax < out.GetLength())
   {
      out = out.Left(imax);
      out+="...";
   }

	return out;
}

Cleek | Image Toolkits | Thumbnail maker

Re: displaying Bytes in hex format

PJ Arends20-Dec-05 7:29

PJ Arends

20-Dec-05 7:29

Looking at the formatting of the code reinforces my belief that using tabs for indenting should be banned. Use spaces only. No matter how careful you are to try and use tabs, somewhere in the code you are going to press the space bar 4 times rather than the tab key once. Now when the code is viewed with a different tab spacing it looks all screwy.

Re: displaying Bytes in hex format

C^hris L^osinger20-Dec-05 7:34

C^hris L^osinger

20-Dec-05 7:34

PJ Arends wrote:
Looking at the formatting of the code reinforces my belief that using tabs for indenting should be banned.

sometimes, when i re-install VC, i forget to turn on Insert Spaces. Frown | :(

Cleek | Image Toolkits | Thumbnail maker

Re: displaying Bytes in hex format

bachirzantou21-Dec-05 0:47

bachirzantou

21-Dec-05 0:47

That was exactly what I was looking for;
Thanks a lot

Re: displaying Bytes in hex format

bachirzantou21-Dec-05 3:49

bachirzantou

21-Dec-05 3:49

what are dwSize and imax for?

Re: displaying Bytes in hex format

Michael Dunn20-Dec-05 18:27

Michael Dunn

20-Dec-05 18:27

Use CString::Format() to get the hex representation:

CString str;
BYTE by = 42;
 
str.Format ( _T("%02X"), by );
// str now equals "2A"

You can use %x instead of %X to get lowercase letters but I find uppercase easier to read.

--Mike--
Visual C++ MVP Cool | :cool:

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Detect network connection?

lynchspawn20-Dec-05 4:42

lynchspawn

20-Dec-05 4:42

Is there a way for a program to know when a network connection has been made? Ideally, I'd like to know when a certain interface is connected (I don't have to know when it was connected, just if it currently is physically connected). It seems as though XP can detect this since it has tray icons for this. Any idea how they are doing it?

Re: Detect network connection?

Blake Miller20-Dec-05 7:53

Blake Miller

20-Dec-05 7:53

If you only have to run on servers, you might be interested in the Network Monitor API:

Network Monitor captures network traffic for display and analysis. It enables you to perform tasks such as analyzing previously captured data in user-defined methods and extract data from defined protocol parsers.

No shirt, no shoes, no brains, no service.

Re: Detect network connection?

PJ Arends20-Dec-05 8:10

PJ Arends

20-Dec-05 8:10

InternetGetConnectedState

Re: Detect network connection?

lynchspawn20-Dec-05 8:28

lynchspawn

20-Dec-05 8:28

Thanks guys -

I don't think either one will work though.

The reason why InternetGetConnectedState won't work is that it seems to only detect if a connection to the internet is found. This won't be true since by default, any new PC will not be allowed to connect to the internet from within our building (MAC filtering).

What I need is a way to determine if the connection is good for a particular interface. Similar to what the connection status icon does in XP.

For now, I'm using a ping to our server name. I guess it's about as good as I will be able to do.

If anyone has a better suggestion, please let me know.

Re: Detect network connection?

David Crow20-Dec-05 10:28

David Crow

20-Dec-05 10:28

Is this of any help?

"Take only what you need and leave the land as you found it." - Native American Proverb

Re: Detect network connection?

ThatsAlok20-Dec-05 18:06

ThatsAlok

20-Dec-05 18:06

lynchspawn wrote:
Any idea how they are doing it?

ISensNetwork

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

eVC++ 4.0 to SQL Server 2000

rbrad1234520-Dec-05 4:05

rbrad12345

20-Dec-05 4:05

Hello all! This is a duplicate from the SQL forum. It might be more suited for this forum.

I've recently completed a Pocket PC application in VB.NET that works with connections to a local SQL Server 2000 CE DB and a SQL Server 2000 via WiFi.

I'd like to look at doing the same thing using eMbedded Visual C++ 4.0 and OLE DB for a CE.NET device. While there are plenty of resources for SQL CE I can't find any for SQL Server 2000.

Does anyone know of a good sample for eVC++ that hits both SQL CE and SQL Server? No ActiveSync and no IIS for this solution thus RDA and Merge Repl are of no value.

Any input is much appreciated!

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