The calling application should give a string that contains the name of the application or entity accessing the Internet to the lpszAgent parameter of InternetOpen. Information about the user agent (the application calling the Internet functions), the type of access to the Internet, the proxy names, the hosts and addresses that bypass the proxy, and the behavior are passed to InternetOpen. To enable a connection to the Internet, a root HINTERNET handle must be created by using InternetOpen. FtpFindFirstFile, FtpOpenFile, and HttpOpenRequest functions use the handle created by InternetConnect to establish a connection to the specified site. InternetConnect does not attempt to access or establish a connection to the specified site, except in the case of an FTP session. InternetConnect initializes a session for the specified site using the arguments passed to it and creates an HINTERNET handle that is a branch off the root handle. Use the InternetConnect function to create a specific session. InternetOpen does not test the connection to the Internet to verify that the characteristics passed to the function are correct. InternetOpen creates the root HINTERNET handle that is used to establish http ftp sessions. Next, use the InternetOpen function to establish the characteristics of the Internet connection the client application is using. If one exists, the function pings that server. If the FLAG_ICC_FORCE_CONNECTION flag is set and the URL is NULL, the function checks to see if there is an entry in the server database for the nearest server. It attempts to ping the server designated by the URL that is passed to the function. Use the InternetCheckConnection function to check the connection to the Internet.
#Enabling cookies in internet explorer 9 Offline#
If this function fails, the application can enter offline mode, which allows it to access information that was cached during previous connections to the Internet. This function calls the dial-up dialog box to initiate a connection to the Internet or check if a connection already exists.
Before using the WinINet functions, the application should attempt to make a connection to the Internet by using the InternetAttemptConnect function.
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