C / C++ / MFC Discussion Boards

Christian Graus27-Feb-05 14:50

27-Feb-05 14:50

Why are you using C instead of C++ ? Surely it would be easier to direct an ifstream to the printer ?

You can use any sort of output method you like to print, so long as you direct it to the print DC.

Christian

I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer

Re: How to print to printer

Yulianto.27-Feb-05 16:07

Yulianto.

27-Feb-05 16:07

My intention was to print like a DOS application would do? You know, like the printing output of a chashier machine. I hope you understand what I meant. I think, I got the wrong concept about this printing thing. Any idea how to print like the DOS? Do I have to code for that, or set the printer?

<italic>Work hard and a bit of luck is the key to success.

You don`t need to be genius, to be rich.

Re: How to print to printer

PJ Arends27-Feb-05 18:46

PJ Arends

27-Feb-05 18:46

You can open a file handle to the printer using "LPT1" as the file name in the fopen function.

FILE *pPrinter = fopen(_T("LPT1"), _T("w"));
if (pPrinter)
{
   fprintf(pPrinter, _T("Hello World"));
}

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

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Re: How to print to printer

Yulianto.27-Feb-05 22:33

Yulianto.

27-Feb-05 22:33

Thank you.

<italic>Work hard and a bit of luck is the key to success.

You don`t need to be genius, to be rich.

xml translation function in C++

RutaK27-Feb-05 9:57

RutaK

27-Feb-05 9:57

Hello guys,
Does anyone have a suggestion on how to write XML function "translate" in C++? Unsure | :~

Thank you in advance,
Ruta

Re: xml translation function in C++

Ravi Bhavnani27-Feb-05 10:42

Ravi Bhavnani

27-Feb-05 10:42

What does the translate() function do? Did you mean transcode()?

/ravi

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Re: xml translation function in C++

RutaK27-Feb-05 10:47

RutaK

27-Feb-05 10:47

no it's translate in XML.
Here what it does: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/xmlsdk/html/xmreftranslatefunction.asp[^]

i need to write it in C++
Ruta

Re: xml translation function in C++

Ravi Bhavnani27-Feb-05 10:57

Ravi Bhavnani

27-Feb-05 10:57

Smells like homework. See strlen() and strchr() to get started.

/ravi

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Re: xml translation function in C++

RutaK27-Feb-05 11:01

RutaK

27-Feb-05 11:01

it is the homework, indeed Smile | :)

Defining a new C++ library

Anonymous27-Feb-05 9:26

Anonymous

27-Feb-05 9:26

Dear ALL
I want to define a new library in Microsoft VC++.
Here is the link of instructions to install the library,

http://lancet.mit.edu/galib-2.4/Installation.html#win

but I am not an expert programmer, so if anyone give me a simple procedure to install this library, I would be so grateful.

Thanks a lot

Mozilla Firefox

stifmeister_ro27-Feb-05 9:24

stifmeister_ro

27-Feb-05 9:24

I want to connect to a running instance of Mozilla Firefox. I

would like to change the URL in the address bar or to fill

input-boxes with text. This is an easy task in Microsoft Internet

Explorer using IWebBrowser2, IHTMLDocument2, IHTMLElement or

others but how do I do this in Mozilla Firefox?

Re: Mozilla Firefox

szcococut19-Jun-05 21:59

szcococut

19-Jun-05 21:59

which one can tell me this answer?
thanks!

Listing files in a folder

Tommy2d27-Feb-05 9:23

Tommy2d

27-Feb-05 9:23

Can anybody indicate me to code that lists the content of a directory on a FAT32 drive? I'm not using MFC...

Re: Listing files in a folder

Ravi Bhavnani27-Feb-05 9:28

Ravi Bhavnani

27-Feb-05 9:28

See FindFirstFile()[^] and FindNextFile()[^].

/ravi

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Re: Listing files in a folder

User 665827-Feb-05 9:41

User 6658

27-Feb-05 9:41

FindFirstFile ... FindNextFile

MSDN has some examples Smile | :)

modified 12-Sep-18 21:01pm.

Defining a new library in VC++

Anonymous27-Feb-05 9:21

Anonymous

27-Feb-05 9:21

Dear ALL
I want to define a new library in Microsoft VC++.
Here is the link of instructions to install the library, but I am not an expert programmer, so if anyone give me a simple procedure to install this library, I would be so grateful.

Thanks a lot

Redirecting an ostream to a message box

JS_H27-Feb-05 8:31

JS_H

27-Feb-05 8:31

I'm coding a set a functions to help me debugging by printing messages. I currently have 2 options; either on the console or in a file. That's enough for what I need but I'm just curious to know if it would be possible to do the same with a message box. That's what I have so far.

<br />
        enum modes {<br />
		CONSOLE, <br />
		FILE,<br />
		MSG_BOX,<br />
	};<br />
<br />
        class ErrorLogger {<br />
		std::ostream *stream;<br />
		std::ofstream *fileOut;<br />
	public:<br />
		ErrorLogger(modes mode) {<br />
			if (mode == CONSOLE)<br />
				stream = new std::ostream(std::cout.rdbuf());<br />
			else if (mode == FILE) {<br />
				fileOut = new std::ofstream("message.log");<br />
				stream = new std::ostream(fileOut->rdbuf());<br />
			}<br />
			else if (mode == MSG_BOX) {<br />
				stream = new std::ostream(/* what would go here? */)<br />
			}<br />
		}<br />
		std::ostream &GetStream() { return (*stream); }<br />
	};<br />
<br />
	template<class T> <br />
	void Print(ErrorLogger &logger, T _data) {<br />
		logger.GetStream() << _data;<br />
	}<br />

Thank you.

-edit-
I need to do something else than code tags for correct formating?

Re: Redirecting an ostream to a message box

Aamir Butt27-Feb-05 19:58

Aamir Butt

27-Feb-05 19:58

try swprintf

You will get a string with your message in it. Then, just use Windows API AfxMessageBox to display the string on the Message Box

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Why cannot get filename by handle directly

sprewellkobe27-Feb-05 7:37

sprewellkobe

27-Feb-05 7:37

i tried to get filename by a filehandle that was obtained by CreatFile func.

but after checking all MSDN reference,i found there is no API func can implement it directly.

the only way to do is that use the CreateFileMapping and MapViewOfFile functions to create the mapping and then use the GetMappedFileName function to obtain the file name;

such as the following code(copied from MSDN):

BOOL GetFileNameFromHandle(HANDLE hFile)
{
BOOL bSuccess = FALSE;
TCHAR pszFilename[MAX_PATH+1];
HANDLE hFileMap;

// Get the file size.
DWORD dwFileSizeHi = 0;
DWORD dwFileSizeLo = GetFileSize(hFile, &dwFileSizeHi);

if( dwFileSizeLo == 0 && dwFileSizeHi == 0 )
{
printf("Cannot map a file with a length of zero.\n");
return FALSE;
}

// Create a file mapping object.
hFileMap = CreateFileMapping(hFile,
NULL,
PAGE_READONLY,
0,
1,
NULL);

if (hFileMap)
{
// Create a file mapping to get the file name.
void* pMem = MapViewOfFile(hFileMap, FILE_MAP_READ, 0, 0, 1);

if (pMem)
{
if (GetMappedFileName (GetCurrentProcess(),
pMem,
pszFilename,
MAX_PATH))
{

// Translate path with device name to drive letters.
TCHAR szTemp[BUFSIZE];
szTemp[0] = '\0';

if (GetLogicalDriveStrings(BUFSIZE-1, szTemp))
{
TCHAR szName[MAX_PATH];
TCHAR szDrive[3] = TEXT(" :");
BOOL bFound = FALSE;
TCHAR* p = szTemp;

do
{
// Copy the drive letter to the template string
*szDrive = *p;

// Look up each device name
if (QueryDosDevice(szDrive, szName, BUFSIZE))
{
UINT uNameLen = _tcslen(szName);

if (uNameLen < MAX_PATH)
{
bFound = _tcsnicmp(pszFilename, szName,
uNameLen) == 0;

if (bFound)
{
// Reconstruct pszFilename using szTemp
// Replace device path with DOS path
TCHAR szTempFile[MAX_PATH];
_stprintf(szTempFile,
TEXT("%s%s"),
szDrive,
pszFilename+uNameLen);
_tcsncpy(pszFilename, szTempFile, MAX_PATH);
}
}
}

// Go to the next NULL character.
while (*p++);
} while (!bFound && *p); // end of string
}
}
bSuccess = TRUE;
UnmapViewOfFile(pMem);
}

CloseHandle(hFileMap);
}
printf("File name is %s\n", pszFilename);
return(bSuccess);
}

i wanna know why MS not provide a func to get filename by file handle directly but to use MapView,I guess that must be with some reasons.

Thanks!;P

Stick to C++

Re: Why cannot get filename by handle directly

Ravi Bhavnani27-Feb-05 10:47

Ravi Bhavnani

27-Feb-05 10:47

Will this work?

CFile file (hFile);
CString strFilename = file.GetFilePath();

/ravi

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Re: Why cannot get filename by handle directly

sprewellkobe27-Feb-05 16:03

sprewellkobe

27-Feb-05 16:03

thank you for your reply.

But i mean that not use MFC,in fact i m not a VC user.;P

i wanna know why windows API not privide this function.

Stick to C++

How can I get the version information about a DLL?

jparsons27-Feb-05 7:15

jparsons

27-Feb-05 7:15

I need to know the major, minor, build and revision numbers.

Jared
jparsons@jparsons.org
www.prism.gatech.edu/~gte477n

Re: How can I get the version information about a DLL?

geo_m27-Feb-05 7:46

geo_m

27-Feb-05 7:46

Look around GetFileVersionInfo function. after chain of functions you should get the VS_FIXEDFILEINFO structure, who contain required data

Re: How can I get the version information about a DLL?

Ravi Bhavnani27-Feb-05 9:20

Ravi Bhavnani

27-Feb-05 9:20

See this[^] article.

/ravi

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Can two thread run the same thread function at the same time?

tttyip27-Feb-05 6:37

tttyip

27-Feb-05 6:37

I want to create two threads to perform two tasks. However, the two task has some common characteristic, so my two threads need to access the same thread function. Can I do that? Do I need to pay attention the synchronization issue? eg. variables within the thread function?

Thanks

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