C / C++ / MFC

Pardhu2 wrote:

f(RegQueryValueEx (hKey,"DWORDSample", NULL, NULL, NULL, &dw)==ERROR_SUCCESS)
{

pbData = (LPBYTE)malloc(dw);

RegQueryValueEx (hKey, "StringSample", NULL, &dwValType, pbData , &dw);

Michael Schubert wrote:

First of all, your variable "dw" is not initialized when you're calling RegQueryValueEx. Also, you set the address for the data buffer to NULL.

void ReadValue()
{
 HKEY hKey = 0;
 DWORD dw;
 DWORD dwData;

 if(RegOpenKeyEx(HKEY_CURRENT_USER, "Software\\Praveen", 0, KEY_READ, &hKey) == ERROR_SUCCESS)
 {
  if(RegQueryValueEx (hKey, "DWORDSample", NULL, NULL, NULL, &dw)==ERROR_SUCCESS)
  {
    RegQueryValueEx (hKey, "StringSample", NULL, NULL, (LPBYTE)&dwData , &dw);
    RegCloseKey(hKey);
  }
 }
}

WSADATA wsaData;
    int iResult; 
    DWORD dwRetval;
    int i = 1;    
    char *port = "80"; // I am using http protocol
    struct addrinfo *result = NULL;
    struct addrinfo *ptr = NULL;
    struct addrinfo hints;	 
    // Initialize Winsock
    iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
    if (iResult != 0) {
        printf("WSAStartup failed: %d\n", iResult);
        return 1;
    }

    //--------------------------------
    // Setup the hints address info structure
    // which is passed to the getaddrinfo() function
    ZeroMemory( &hints, sizeof(hints) );
    hints.ai_family = AF_UNSPEC;
    hints.ai_socktype = SOCK_STREAM;
    hints.ai_protocol = IPPROTO_TCP;

//--------------------------------"
// Call getaddrinfo(). If the call succeeds,
// the result variable will hold a linked list
// of addrinfo structures containing response
// information
	

    dwRetval = getaddrinfo("xx.x.xxx.xxx", "80", &hints, &result);
    if ( dwRetval != 0 ) {
        printf("getaddrinfo failed with error: %d\n", dwRetval);
        WSACleanup();
        return 1;
    }

line 1: CoInitialize(NULL);    
line 2: xyzService::CxyzService test;
line 3: CComBSTR result1;
line 4: test.Methodname(CComBSTR(L"0001"),CComBSTR   (L"0001"),&result1);
line 5: CoUninitialize();

freeaddrinfo(result);
    WSACleanup();

dwRetval = getaddrinfo("xx.x.xxx.xxx", "80", &hints, &result);

dwRetval = GetAddrInfoA("xx.x.xxx.xxx", "80", &hints, &result);

#define WINVER 0x0500
#define _WIN32_WINNT 0x0500