(MFC) Twitter - Tweet with Multiple Images

Example to post a status update with multiple associated images/photos (or videos).

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkJsonObject.h>
#include <CkRest.h>
#include <CkOAuth1.h>

void ChilkatSample(void)
    {
    CkString strOut;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // ----------------------------------------------------------------------
    // This initial setup, which involves setting the OAuth1 properties and connecting
    // to api.twitter.com, is only required once at the beginning.  Once connected, the same
    // object instance may be re-used, and if necessary, it will automatically reconnect
    // as needed.

    // Assume we've previously obtained an access token and saved it to a JSON file..
    CkJsonObject json;
    bool success = json.LoadFile("qa_data/tokens/twitter.json");

    CkRest rest;
    CkOAuth1 oauth1;

    oauth1.put_ConsumerKey("TWITTER_CONSUMER_KEY");
    oauth1.put_ConsumerSecret("TWITTER_CONSUMER_SECRET");
    oauth1.put_Token(json.stringOf("oauth_token"));
    oauth1.put_TokenSecret(json.stringOf("oauth_token_secret"));
    oauth1.put_SignatureMethod("HMAC-SHA1");
    oauth1.GenNonce(16);

    rest.SetAuthOAuth1(oauth1,false);

    bool bAutoReconnect = true;
    success = rest.Connect("api.twitter.com",443,true,bAutoReconnect);
    if (success != true) {
        strOut.append(rest.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // This ends the initial setup...
    // ----------------------------------------------------------------------

    const char *tweetContent = "This is a test tweet with multiple images.";

    // Send a tweet...
    rest.ClearAllQueryParams();
    rest.AddQueryParam("status",tweetContent);

    // Add list of comma separated media_ids to associate with the Tweet. 
    // You may include up to 4 photos or 1 animated GIF or 1 video in a Tweet.
    // The image needs to have been previously uploaded.  The upload response gave us
    // the media ID we'll use to associate this tweet with the image (or video)
    // See Twitter Upload Media for sample code.
    rest.AddQueryParam("media_ids","793137045996646400,793192201392041984");

    const char *resp = rest.fullRequestFormUrlEncoded("POST","/1.1/statuses/update.json");
    if (rest.get_LastMethodSuccess() != true) {
        strOut.append(rest.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    CkJsonObject jsonResponse;
    jsonResponse.put_EmitCompact(false);
    jsonResponse.Load(resp);

    if (rest.get_ResponseStatusCode() != 200) {
        strOut.append(jsonResponse.emit());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Show the successful response:
    strOut.append(jsonResponse.emit());
    strOut.append("\r\n");
    strOut.append("Success.");
    strOut.append("\r\n");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }