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Hi, all
I encountered a problem about refreshing the system drivers in Device Manager. When installing a software, I registered 2 system virtual device into system. After the box restart again, those 2 drivers do not display in the "No Plug and Play Device" device node in the System Device manager(via "View" menu and "Show hidden devices"). It will always appear after running "Scan for Hardware Change" menu or the seconde time reboot.
I want to ask is there any Windows API or MSDN function can play the same role as "Scan for Hardware Change". I want to let Windows do the same job.
I tried the sending message way and it was failed. The following are my codes.
SendMessageTimeout(HWND_BROADCAST, WM_DEVICECHANGE, DBT_DEVNODES_CHANGED,0, SMTO_ABORTIFHUNG, 3000, &dwMsgResult);
Thanks for give me some suggestions.
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I want to write a program in Visual C++ to transfer data between a computers and microcontroller.
I have to use the wireless communication between PC and Microcontroller.
What i need (libraries, or is there any help in MSDN.)
What i figured out is that i need "winsock" for programming.
Where should I start.
thanks
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Hallo,
In my program, I execute some SQL-querys stored in a CString-variable. My question is: how long can this query be? Does this depend on the CString or on SQL?
Thaks, Gerhard
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of course limitted by the SQL engine... by i never heard of a query maximum length size...
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Thanks for the fast answer, Gerhard
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Hi All,
I have been trying to build on an application that allows you to write to blogs. After googling and gathering information I have not been able to find a good resource that provides some articles on writing to blogs. I am using VC++ .NET
Can some body provide a URL where I can get some examples regarding publishing to blogs?
Any help is highly appreciated.
Thanks
Somethings seem HARD to do, until we know how to do them.
 _AnShUmAn_
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Thanks for your suggestion.
Can you tell me how can I use this API to write/publish the comments to blogger.com
Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_
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_AnShUmAn_ wrote: Can some body provide a URL where I can get some examples regarding publishing to blogs?
Each blog uses a different API to do this. Almost all of them use an HTTP-XMLRPC type setup, but you will have to look at the documentation for each blog you want to write a client for to find out what they want/expect to be in the message. I would start with the open source blogs first (LiveJournal use to have a fairly extensive document that described their API in great detail ... I'm not sure if it is still there or if it is up to date, but it would be a good starting point).
If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week
Zac
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Thanks for your comment. I already know that it would require an API for specific blog.I want to write to blogger.com
Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_
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I hava writen a DLL,and injected DLL into a process.But when I inject DLL into target process every time,it will terminate the target process.If I don't create a new thread in DLL,it work well.How can I write correct code to implement?
ps: testdll.cpp
#include "stdafx.h"
#include <afxdllx.h>
#include "process.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
static AFX_EXTENSION_MODULE TestDLL = { NULL, NULL };
unsigned __stdcall ThreadFunc(LPVOID pParam){
CSocket sockListen,m_sockSend;
sockListen.Create(6802,SOCK_STREAM,"127.0.0.1");
sockListen.Bind(6802,"127.0.0.1");
sockListen.Listen(5);
sockListen.Accept(m_sockSend);
Sleep(50000);
sockListen.Close();
MessageBox(NULL,"ThreadFunc","Oops!!",MB_OK);
return 0;
}
extern "C" int APIENTRY
DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID lpReserved)
{
UNREFERENCED_PARAMETER(lpReserved);
if (dwReason == DLL_PROCESS_ATTACH)
{
TRACE0("Test.DLL ！\n");
if (!AfxInitExtensionModule(TestDLL, hInstance))
return 0;
new CDynLinkLibrary(TestDLL);
_beginthreadex(NULL,0,ThreadFunc,NULL,0,NULL);
}
else if (dwReason == DLL_PROCESS_DETACH)
{
TRACE0("Test.DLL ！\n");
AfxTermExtensionModule(TestDLL);
}
return 1;
}
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perhaps I should write dll without MFC
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plz give me sample code useing this method.
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hi,
include <stdio.h>
#include "winsock2.h"
void main() {
WSADATA wsaData;
SOCKET RecvSocket;
sockaddr_in RecvAddr;
int Port = 27015;
char RecvBuf[1024];
int BufLen = 1024;
sockaddr_in SenderAddr;
int SenderAddrSize = sizeof(SenderAddr);
//-----------------------------------------------
// Initialize Winsock
WSAStartup(MAKEWORD(2,2), &wsaData);
//-----------------------------------------------
// Create a receiver socket to receive datagrams
RecvSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
//-----------------------------------------------
// Bind the socket to any address and the specified port.
RecvAddr.sin_family = AF_INET;
RecvAddr.sin_port = htons(Port);
RecvAddr.sin_addr.s_addr = htonl(INADDR_ANY);
bind(RecvSocket, (SOCKADDR *) &RecvAddr, sizeof(RecvAddr));
//-----------------------------------------------
// Call the recvfrom function to receive datagrams
// on the bound socket.
printf("Receiving datagrams...\n");
recvfrom(RecvSocket,
RecvBuf,
BufLen,
0,
(SOCKADDR *)&SenderAddr,
&SenderAddrSize);
//-----------------------------------------------
// Close the socket when finished receiving datagrams
printf("Finished receiving. Closing socket.\n");
closesocket(RecvSocket);
//-----------------------------------------------
// Clean up and exit.
printf("Exiting.\n");
WSACleanup();
return;
}
Uday kiran
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hi,
#include <stdio.h>
#include "winsock2.h"
void main() {
WSADATA wsaData;
SOCKET SendSocket;
sockaddr_in RecvAddr;
int Port = 27015;
char SendBuf[1024];
int BufLen = 1024;
//---------------------------------------------
// Initialize Winsock
WSAStartup(MAKEWORD(2,2), &wsaData);
//---------------------------------------------
// Create a socket for sending data
SendSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
//---------------------------------------------
// Set up the RecvAddr structure with the IP address of
// the receiver (in this example case "123.456.789.1")
// and the specified port number.
RecvAddr.sin_family = AF_INET;
RecvAddr.sin_port = htons(Port);
RecvAddr.sin_addr.s_addr = inet_addr("123.456.789.1");
//---------------------------------------------
// Send a datagram to the receiver
printf("Sending a datagram to the receiver...\n");
sendto(SendSocket,
SendBuf,
BufLen,
0,
(SOCKADDR *) &RecvAddr,
sizeof(RecvAddr));
//---------------------------------------------
// When the application is finished sending, close the socket.
printf("Finished sending. Closing socket.\n");
closesocket(SendSocket);
//---------------------------------------------
// Clean up and quit.
printf("Exiting.\n");
WSACleanup();
return;
}
Uday kiran
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2. Be specific! Don't ask "can someone send me the code to create an application that does 'X'
"Chris Maunder"
SeeSockets Tutorial[^]if its good for you
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Did you not consider this.
"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank
"Judge not by the eye but by the heart." - Native American Proverb
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Hi all!
I have a problem in getting xml file data. If a xml file is in my computer, i can get all data. But if i want to access to another computer to get data, all of it will be NULL. My code is here: (unicode project)
// redefine : using msxml3.dll
typedef MSXML::IXMLDOMDocument* XMLDocumentPtr;
typedef MSXML::IXMLDOMElement* XMLElementPtr;
typedef MSXML::IXMLDOMNode* XMLNodePtr;
typedef MSXML::IXMLDOMNodeList* XMLNodeListPtr;
XMLDocumentPtr pXMLDoc = NULL;
HRESULT hr;
hr = CoInitialize(NULL);
if (FAILED(hr)) {
return FALSE;
}
hr = CoCreateInstance(MSXML::CLSID_DOMDocument, NULL,
CLSCTX_INPROC_SERVER | CLSCTX_LOCAL_SERVER,
MSXML::IID_IXMLDOMDocument, (LPVOID*)&pXMLDoc);
if (!pXMLDoc) {
return FALSE;
}
pXMLDoc->put_async(VARIANT_TRUE);
VARIANT_BOOL varOkay;
pXMLDoc->load((_variant_t)szXMLFilePathName,&varOkay);
if(!varOkay)
return FALSE;
XMLNodePtr pNodeItem = NULL;
VARIANT var;
CString szTmp;
// get Version
szTmp = _T("VisioAlertData/VersionAlert/Version");
pXMLDoc->selectSingleNode((_bstr_t)szTmp, &pNodeItem);
if(pNodeItem)
{
pNodeItem->get_nodeTypedValue(&var);
vAlt.m_szVersion = var.bstrVal;
} .............
If szXMLFilePathName = _T("C:\\a.xml") then pNodeItem will be != NULL
But if szXMLFilePathName = _T("http://pnlong:8080/Visioalerte/VisioAlerte.xml") then pNodeItem will be = NULL. but if after pXMLDoc->load((_variant_t)szXMLFilePathName,&varOkay) i call a message: AfxMessageBox(szXMLFilePathName) then i can get all data.
I don't know why  . Who can help me?
Thank in advance!
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Hi I want to use non rectangular edit boxes......
Is there any option to create ?
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An edit box is a pretty interesting control. It paints itself outside of WM_PAINT, which makes owner drawing one challenging, and I would thing that owner drawnig one in an unusual shape would be doubly so.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
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Dear friends,
How can I know how many lines of text in the Edit control?
I want the edit control to scroll vertically to the last line of the text.
I want to know the number of lines (nLines) in Edit ocntrol so I can use CEDIT::LineScroll(nLines).
thanks and Cheers,
Joy Anne
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