C / C++ / MFC

Open a external application due tu the document type

14-Mar-06 5:24

includeh10 wrote:
1. barcode is drawn by lines (space and bar), why does it need font? font is useless when we draw lines.

See here.

includeh10 wrote:
2. what is correct width of bar or space? - i.e. 0.2 mm etc.

A barcode is comprised of bars and spaces. I believe the leftmost bar, which is one unit wide, sets the stage for the remaining bars and spaces.

includeh10 wrote:
3. what is correct height of barcode?

I believe it is governed by the product on which the barcode is placed. For example, a large box can afford to have a large barcode where as box of cookies could not. Another determining factor is how far will the scanner be from the box.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Alfred Willi14-Mar-06 4:42

Alfred Willi

14-Mar-06 4:42

I'm writing an application, where I need to save links to external documents (.xls, .doc, .txt, ...). In Windows, when I double-click to such a file, it'll be opened automatically by the corresponding application.

double-click to test.xls opens Microsoft Excel
double-click to test.doc opens Microsoft Word
double-click to test.tif opens the corresponding graphical application
and so on...

How can I implement this functionality in my application, working under Visual C++ / MFC ?

regards
Alfred Willi

Re: Open a external application due tu the document type

includeh1014-Mar-06 4:50

includeh10

14-Mar-06 4:50

a type of file (extension) is associated with an application.
u can find all info about this in system register (run regedit.exe).

e.g. doc file can be opened by Microsoft word.

A nice tool for optimizing your Microsoft html-help contents.

Includeh10

Re: Open a external application due tu the document type

David Crow14-Mar-06 5:40

Re: Open a external application due tu the document type

14-Mar-06 5:40

Alfred Willi wrote:

How can I implement this functionality in my application, working under Visual C++ / MFC ?

Use ShellExecute() with the "open" verb will open the associated application.

Otherwise, if you are wanting to know how to register your own file type, this is handled for you automatically by MFC's AppWizard. It will create a .reg file in your project that can be merged on the target machine. Check out CWinApp::EnableShellOpen() and CWinApp::RegisterShellFileTypes().

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Alfred Willi16-Mar-06 4:56

Alfred Willi

16-Mar-06 4:56

Hi David

Your answer was exactly the information I was looking for. Your answer was very helpful for me. Thanks a lot.

Alfred Willi

Blue Screen

Aqueel14-Mar-06 4:10

Aqueel

14-Mar-06 4:10

Hello i am working with MFC. I want to display a full screen with blue color. I can give you an example. When Windows 2000 starts up. After booting it requires network password. At that time, Background is blue. I want to ask how can i do it?
Thank you.

We Believe in Excellence

view computers in my lan

User 242973714-Mar-06 4:04

14-Mar-06 4:04

Hi, I'm searching for a few days now for a tutorial of an example to see all the computers that are in my lan.
Does anybody has this for me?

Greetings,
Spike

David Crow14-Mar-06 4:23

14-Mar-06 4:23

Try NetServerEnum().

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

User 242973714-Mar-06 4:40

14-Mar-06 4:40

I have this code, but it seems Visual Studio .Net has trouble with WNetOpenEnum, WNetEnumRecources and WNetCloseEnum.

	CString strTemp;<br />
	CListBox *pList = (CListBox*) GetDlgItem(IDC_LIST1);<br />
	pList->ResetContent();<br />
<br />
	struct hostent *host;	<br />
	struct in_addr *ptr;	// To retrieve the IP Address<br />
<br />
 	DWORD dwScope = RESOURCE_CONTEXT;<br />
	NETRESOURCE *NetResource = NULL;	<br />
	HANDLE hEnum;	<br />
	WNetOpenEnum( dwScope, NULL, NULL, NULL, &hEnum );	<br />
	<br />
	WSADATA wsaData;  <br />
	WSAStartup(MAKEWORD(1,1),&wsaData);<br />
<br />
	if ( hEnum )	<br />
	{<br />
		DWORD Count = 0xFFFFFFFF;<br />
		DWORD BufferSize = 2048;<br />
		LPVOID Buffer = new char[2048];<br />
		WNetEnumResource( hEnum, &Count, Buffer, &BufferSize );<br />
<br />
		NetResource = (NETRESOURCE*)Buffer;<br />
<br />
		char szHostName[200];<br />
<br />
		for ( unsigned int i = 0; i < BufferSize/sizeof(NETRESOURCE); i++, NetResource++ )<br />
		{	<br />
			if ( NetResource->dwUsage == RESOURCEUSAGE_CONTAINER && NetResource->dwType == RESOURCETYPE_ANY )<br />
			{<br />
				if ( NetResource->lpRemoteName )<br />
				{<br />
					CString strFullName = NetResource->lpRemoteName;<br />
					<br />
					if ( 0 == strFullName.Left(2).Compare("\\\\") )<br />
						strFullName = strFullName.Right(strFullName.GetLength()-2);<br />
<br />
					gethostname( szHostName, strlen( szHostName ) );<br />
					host = gethostbyname(strFullName);<br />
					ptr = (struct in_addr *) host->h_addr_list[0];<br />
<br />
					int a = ptr->S_un.S_un_b.s_b1;  // Eg. 211.40.35.76 split up like this.<br />
					int b = ptr->S_un.S_un_b.s_b2;  //     40<br />
					int c = ptr->S_un.S_un_b.s_b3;  //     35<br />
					int d = ptr->S_un.S_un_b.s_b4;  //     76<br />
<br />
					strTemp.Format("%s -->  %d.%d.%d.%d",strFullName,a,b,c,d);<br />
					pList->AddString(strTemp);<br />
				}<br />
			}<br />
		}<br />
		delete Buffer;<br />
		WNetCloseEnum( hEnum );<br />
	}<br />
	WSACleanup();

David Crow14-Mar-06 5:35

14-Mar-06 5:35

This is code I've used successfully in the past:

WSADATA       wsaData;
DWORD         dwResult,
              dwCount = 0xffffffff,
              dwBufferSize = 16384;
HANDLE        hEnum;
LPVOID        lpBuffer;
LPNETRESOURCE lpNetResource = NULL; 
 
dwResult = WSAStartup(MAKEWORD(1, 1), &wsaData);
if (0 == dwResult)
{
    dwResult = WNetOpenEnum(RESOURCE_CONTEXT, RESOURCETYPE_ANY, NULL, NULL, &hEnum);
    if (NO_ERROR == dwResult && NULL != hEnum)
    {
        lpBuffer = new BYTE[dwBufferSize];
 
        dwResult = WNetEnumResource(hEnum, &dwCount, lpBuffer, &dwBufferSize);
        if (NO_ERROR == dwResult && dwCount > 0)
        {
            lpNetResource = (LPNETRESOURCE) lpBuffer; 

            while (NULL != lpNetResource)
            {
                ...
                lpNetResource++;
            }
        }
 
        delete [] lpBuffer;
    }
 
    dwResult = WSACleanup();
}

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

User 242973714-Mar-06 8:18

14-Mar-06 8:18

Thanks for the code, but again thesame. I get these errors:

NetSender error LNK2019: unresolved external symbol _WNetEnumResourceA@16 referenced in function "public: void __thiscall CNetSenderDlg::View(void)" (?View@CNetSenderDlg@@QAEXXZ)

NetSender error LNK2019: unresolved external symbol _WNetOpenEnumA@20 referenced in function "public: void __thiscall CNetSenderDlg::View(void)" (?View@CNetSenderDlg@@QAEXXZ)

NetSender fatal error LNK1120: 2 unresolved externals

ThatsAlok14-Mar-06 18:28

ThatsAlok

14-Mar-06 18:28

jspike wrote:
Thanks for the code, but again thesame. I get these errors:

please include this line in your cpp file

#pragma comment(lib,_T("Mpr.lib"))

"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

User 242973714-Mar-06 20:18

14-Mar-06 20:18

It works, thank you Big Grin | :-D

wchat_t to normal char

RichardS14-Mar-06 4:00

RichardS

14-Mar-06 4:00

Hi All,

I have an utility programme that uses wchar_t. However interfacing to our programme which uses char's is a problem.

How does one convert to wchar_t to char, and visa versa?

regards,
Rich

"Programming today is a race between software engineers striving to build bigger and
better idiot-proof programs, and the Universe trying to produce bigger and better idiots.
So far the Universe is winning." -- Rich Cook

Michael Dunn14-Mar-06 8:39

Michael Dunn

14-Mar-06 8:39

???

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

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David Crow14-Mar-06 4:26

14-Mar-06 4:26

Check out the W2A() and A2W() macros.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Nemanja Trifunovic14-Mar-06 6:52

Nemanja Trifunovic

14-Mar-06 6:52

RichardS wrote:
How does one convert to wchar_t to char

WideCharToMultiByte[^]

RichardS wrote:
and visa versa

MultiByteToWideChar[^]

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