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## C.9 Connect to the Internet

     ; ConnectInternet (uses Dialer plug-in)

     ; Written by Joost Verburg

     ;

     ; This function attempts to make a connection to the internet if there is no

     ; connection available. If you are not sure that a system using the installer

     ; has an active internet connection, call this function before downloading

     ; files with NSISdl.

     ;

     ; The function requires Internet Explorer 3, but asks to connect manually if

     ; IE3 is not installed.

     Function ConnectInternet

       Push $R0

         ClearErrors

         Dialer::AttemptConnect

         IfErrors noie3

         Pop $R0

         StrCmp $R0 "online" connected

           MessageBox MB_OK|MB_ICONSTOP "Cannot connect to the internet."

           Quit ;This will quit the installer. You might want to add your own error handling.

         noie3:

         ; IE3 not installed

         MessageBox MB_OK|MB_ICONINFORMATION "Please connect to the internet now."

         connected:

       Pop $R0

     FunctionEnd

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