C / C++ / MFC

J5121982 wrote:

I have captured video from webcam and displayed in my dialog.

Bankey Khandelwal wrote:

its urgent

BOOL GetWebContent(LPCTSTR szURL, CString &strData)
{
	strData = "";
	
	HINTERNET hConnection = InternetOpen("Microsoft Internet Explorer",
		PRE_CONFIG_INTERNET_ACCESS,
		NULL,
		INTERNET_INVALID_PORT_NUMBER,
		0);
	
	if (hConnection == NULL)
		return FALSE;
	
    DWORD dwSize;
    CHAR szHead[] = "Accept: */*\r\n\r\n";
    char *szbuf;
    HINTERNET hConnect;
	
	if (!(hConnect = InternetOpenUrl(hConnection, 
		szURL, 
		szHead,
		lstrlen(szHead), 
		INTERNET_FLAG_DONT_CACHE, 
		0)))
    {
		InternetCloseHandle(hConnection);
        return FALSE;
    }       
	
	BOOL bReadInParts = FALSE;
	DWORD dwNumberOfBytes = 0;
	// Query the size of http file
	if (InternetQueryDataAvailable(hConnect,
		&dwNumberOfBytes,
		0,
		0)){
		if (dwNumberOfBytes < 0){
			bReadInParts = TRUE;
		}
		else{
			szbuf = new char[dwNumberOfBytes+1];
			if (!InternetReadFile(hConnect, szbuf, dwNumberOfBytes, &dwSize)){
				bReadInParts = TRUE;
			}
			if (dwSize < dwNumberOfBytes+1)
				szbuf[dwSize] = '\0';
			
			strData = szbuf;
			delete []szbuf;
		}
	}
	
	if (bReadInParts){
		// Read the file in parts
		szbuf = new char[512];
        do{
			if (!InternetReadFile (hConnect, szbuf, 512,  &dwSize)){
				return FALSE;
			}
			
			if (!dwSize)
				break;  // Condition of dwSize=0 indicate EOF. Stop.
			
			if (dwSize < 512)
				szbuf[dwSize] = '\0';
			
			strData += szbuf;
			
		} while(1);
		delete []szbuf;
	}
	
	InternetCloseHandle(hConnect);
	InternetCloseHandle(hConnection);
	
	return TRUE;
}

typdef struct
{
   BITMAPINFOHEADER   icHeader;      // DIB header
   RGBQUAD         icColors[1];   // Color table
   BYTE            icXOR[1];      // DIB bits for XOR mask
   BYTE            icAND[1];      // DIB bits for AND mask
} ICONIMAGE, *LPICONIMAGE;

AnShUmAn_VCPP wrote:

The Operating system calls a callback function as it receives WM_TIMER message time and again

class Base {
public:
	virtual void vvfunc() {}
};

class Derived : public Base {};

using namespace std;
int main()
{	
  Derived* pd = new Derived;
  Base* pb = pd;
  Base b;	
  cout << typeid( b ).name() << endl;   //prints "class Base *"
  cout << typeid( pb ).name() << endl;   //prints "class Base *"
  cout << typeid( pb ).name() << endl;   //prints "class Derived"
  cout << typeid( pd ).name() << endl;   //prints "class Derived *"
  cout << typeid( pd ).name() << endl;   //prints "class Derived"
  delete pd;
}