Send Ping to Yahoo! when RSS Feed is Updated

How to ping Yahoo! when an RSS feed has been updated, using the REST interface.

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// Needs #include <CkHttp.h>

    CkString strOut;

    CkHttp http;

    bool success;

    //  Any string unlocks the component for the 1st 30-days.
    success = http.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Yahoo indicates that The REST interface:
    //  URL: http://ping.feeds.yahoo.com/rss/ping
    //  Parameter(s): u=<site or feed url>
    //  HTTP method: GET

    //  The RSS2 feed URL for blog.chilkatsoft.com is:
    //  http://blog.chilkatsoft.com/?feed=rss2

    //  Send the HTTP GET and return the content in a string.
    const char * responseText;
    responseText = http.quickGetStr("http://ping.feeds.yahoo.com/rss/ping?u=http://blog.chilkatsoft.com/?feed=rss2");

    strOut.append(responseText);
    strOut.append("\r\n");

    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());