(MFC) Get the Photos for a User

Demonstrates how to get the photos that the user has uploaded.

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

See Also: Using MFC CString in Chilkat

#include <CkOAuth2.h>
#include <CkRest.h>
#include <CkJsonObject.h>
#include <CkDateTime.h>
#include <CkDtObj.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 example assumes a previously obtained an access token
    CkOAuth2 oauth2;
    oauth2.put_AccessToken("FACEBOOK-ACCESS-TOKEN");

    CkRest rest;

    // Connect to Facebook.
    bool success = rest.Connect("graph.facebook.com",443,true,true);
    if (success != true) {
        strOut.append(rest.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Provide the authentication credentials (i.e. the access key)
    rest.SetAuthOAuth2(oauth2);

    // Indicate that we only want the photos the user has personally uploaded.
    rest.AddQueryParam("type","uploaded");

    // We could limit the number of photos by setting a limit.
    rest.AddQueryParam("limit","5");

    // Gets the 1st page of photos. (Not the actual image data, but the information about each photo.)
    // See https://developers.facebook.com/docs/graph-api/reference/user/photos/ for more information.
    const char *responseJson = rest.fullRequestNoBody("GET","/v2.7/me/photos");
    if (rest.get_LastMethodSuccess() != true) {
        strOut.append(rest.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    CkJsonObject json;
    json.put_EmitCompact(false);
    json.Load(responseJson);
    strOut.append(json.emit());
    strOut.append("\r\n");

    // A sample JSON response is shown below.  
    // This is the code to parse the JSON response.

    CkDateTime dtime;
    bool bLocalTime = true;

    CkDtObj *dt = 0;
    int i = 0;
    int numItems = json.SizeOfArray("data");
    while (i < numItems) {
        json.put_I(i);
        strOut.append("--- ");
        strOut.appendInt(i);
        strOut.append("\r\n");
        const char *name = json.stringOf("data[i].name");
        if (json.get_LastMethodSuccess() == true) {
            strOut.append("name: ");
            strOut.append(name);
            strOut.append("\r\n");
        }

        strOut.append("id: ");
        strOut.append(json.stringOf("data[i].id"));
        strOut.append("\r\n");

        // We can load the created_time into a CkDateTime...
        dtime.SetFromTimestamp(json.stringOf("data[i].created_time"));
        dt = dtime.GetDtObj(bLocalTime);
        strOut.appendInt(dt->get_Month());
        strOut.append("/");
        strOut.appendInt(dt->get_Day());
        strOut.append("/");
        strOut.appendInt(dt->get_Year());
        strOut.append("  ");
        strOut.appendInt(dt->get_Hour());
        strOut.append(":");
        strOut.appendInt(dt->get_Minute());
        strOut.append("\r\n");
        delete dt;
        i = i + 1;
    }

    // We can get the paging information as follows:
    strOut.append("URL for next page: ");
    strOut.append(json.stringOf("paging.next"));
    strOut.append("\r\n");
    strOut.append("before cursor: ");
    strOut.append(json.stringOf("paging.cursors.before"));
    strOut.append("\r\n");
    strOut.append("after cursor: ");
    strOut.append(json.stringOf("paging.cursors.after"));
    strOut.append("\r\n");

    // This is a sample JSON response:
    // { 
    //   "data": [
    //     {
    //       "created_time": "2016-09-29T20:46:18+0000",
    //       "name": "Ignore my posts -- I'm doing some testing for Facebook related programming...",
    //       "id": "10210199026347451"
    //     },
    //     { 
    //       "created_time": "2016-09-19T02:00:42+0000",
    //       "id": "10210091531240138"
    //     },
    //     { 
    //       "created_time": "2016-09-19T02:00:42+0000",
    //       "id": "10210091520620125"
    //     },
    //     { 
    //       "created_time": "2016-09-19T01:59:46+0000",
    //       "name": "I would've went for a swim had it not been for the sign",
    //       "id": "10210091522299917"
    //     },
    //     { 
    //       "created_time": "2016-09-12T00:37:35+0000",
    //       "id": "10210023316834798"
    //     }
    //   ],
    //   "paging": { 
    //     "cursors": { 
    //       "before": "MTAyMTAxOTkwMjYzNDc0NTEZD",
    //       "after": "MTAyMTAwMjMzMTU4MzQ3OTgZD"
    //     },
    //     "next": "https:\/\/graph.facebook.com\/v2.7\/10224048320139890\/photos?type=uploaded&limit=5&after=MTAyMTAwMjMzMTU4MzQ3OTgZD"
    //   }
    // }
    // 


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }