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Open a URL in a new window

, 10 Jul 2003
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An article showing how to launch a URL in a new browser window
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Ever wanted to open a URL without blatting the contents of an existing browser window?  Here's how - and it will only take you seconds.

First, include the header file:

 #include "url.h"

Then simply declare a CURL object and call the Open method:

CURL url;
url.Open(_T("<A href=""></A>"));

If you want to re-use an existing browser window, then pass false as the second parameter:

CURL url;
url.Open(_T("<A href=""></A>"), false);

That's it!  Easy - and you can use this code with any CString friendly framework (MFC, WTL, ATL7).


#pragma once

class CURL
 // The default browser
 CString m_strBrowser;
 // Open a URL
 void Open(LPCTSTR lpszURL, bool bNewWindow = true)
  if (bNewWindow)
   ::ShellExecute(NULL, NULL, GetBrowser(), lpszURL, NULL, SW_SHOWNORMAL);
   ::ShellExecute(NULL, NULL, lpszURL, NULL, NULL, SW_SHOWNORMAL);

 // Get the default browser from the registry
 LPCTSTR GetBrowser(void)
  // Have we already got the browser?
  if (m_strBrowser.IsEmpty())
   // Get the default browser from HKCR\http\shell\open\command
   HKEY hKey = NULL;
   // Open the registry
   if (::RegOpenKeyEx(HKEY_CLASSES_ROOT, _T("http\\shell\\open\\command"),
     0, KEY_READ, &hKey) == ERROR_SUCCESS)
    // Data size
    DWORD cbData = 0;
    // Get the default value
    if (::RegQueryValueEx(hKey, NULL, NULL, NULL, NULL, &cbData) 
        == ERROR_SUCCESS && cbData > 0)
     // Allocate a suitable buffer
     TCHAR* psz = new TCHAR [cbData];
     // Success?
     if (psz != NULL)
      if (::RegQueryValueEx(hKey, NULL, NULL,
       NULL, (LPBYTE)psz, &cbData) ==
       // Success!
       m_strBrowser = psz;
      delete [] psz;
   // Do we have the browser?
   if (m_strBrowser.GetLength() > 0)
    // Strip the full path from the string
    int nStart = m_strBrowser.Find('"');
    int nEnd = m_strBrowser.ReverseFind('"');
    // Do we have either quote?
    // If so, then the path contains spaces
    if (nStart >= 0 && nEnd >= 0)
     // Are they the same?
     if (nStart != nEnd)
      // Get the full path
      m_strBrowser = m_strBrowser.Mid(nStart + 1, nEnd - nStart - 1);
     // We may have a pathname with spaces but
     // no quotes (Netscape), e.g.:
     // Look for the last backslash
     int nIndex = m_strBrowser.ReverseFind('\\');
     // Success?
     if (nIndex > 0)
      // Look for the next space after the final
      // backslash
      int nSpace = m_strBrowser.Find(' ', nIndex);
      // Do we have a space?
      if (nSpace > 0)
       m_strBrowser = m_strBrowser.Left(nSpace);    
  // Done
  return m_strBrowser;


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Comments and Discussions

QuestionRegsitry key to get default browser is wrong PinmemberRamveer Singh from Gurgaon, Haryana10-Nov-11 0:13 
QuestionIt's not work for Safari PinmemberDaniel Xu13-Jul-11 16:58 
GeneralIts not working in vs2008 for windows6.5 mobile device PinmemberAshutosh kumar Tripathi23-Mar-11 4:09 
GeneralMy vote of 2 PinmemberKarstenK15-Dec-08 2:53 
QuestionProblem with Running the Setup Pinmemberlaleh_sg1-Oct-06 21:51 
QuestioncURL in c# Pinmemberplz.ze28-Sep-06 2:53 
AnswerRe: cURL in c# PinmemberRob Caldecott28-Sep-06 4:24 
GeneralFirefox takes &quot;-new&quot; command line argument Pinmembersemmel7113-Nov-05 2:07 
GeneralOpen a URL with no Toolbar Pinmembervtnam063495-May-05 16:31 
GeneralRe: Open a URL with no Toolbar PinsussAnonymous8-May-05 19:04 
GeneralImproved browser path detection Pinmembermnjackson19-Jan-05 2:34 
GeneralRe: Improved browser path detection PinsussAnonymous19-Jan-05 8:22 
GeneralRe: Improved browser path detection Pinmembermnjackson19-Jan-05 10:05 
AnswerRe: Improved browser path detection Pinmemberdima polyakov17-May-07 19:20 
GeneralRe: Improved browser path detection Pinmemberoferhe14-Jan-06 23:55 
GeneralSimpler fix Re: Improved browser path detection Pinmemberpeas26-Aug-08 11:22 
GeneralMakes sense only for Internet Explorer, after test PinmemberAlexandru7-Dec-04 0:22 
QuestionWhat will be the sub key for the AVI file PinsussAnonymous3-Oct-04 19:04 
GeneralModifications for FireFox PinmemberJeremy Davis29-Jul-04 1:21 
GeneralRe: Modifications for FireFox PinmemberRobert Edward Caldecott29-Jul-04 1:44 
GeneralRe: Modifications for FireFox, Mozilla, Netscape, Opera, IE Pinmembertoshiya3-Nov-04 15:41 
GeneralRe: Modifications for FireFox, Mozilla, Netscape, Opera, IE PinsussAnonymous3-May-05 8:28 
Questionbuilder 6 version? Pinmembervertygo30-Sep-03 0:11 
AnswerRe: builder 6 version? PinmemberRobert Edward Caldecott30-Sep-03 0:14 
GeneralMuch simpler for browser path... PinsussJai b28-Sep-03 23:39 

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