(Unicode C++) OneDrive -- List Root Directory

See more OneDrive Examples

This gets the collection of DriveItem children of the root DriveItem. In OneDrive, a driveItem resource represents a file, folder, or other item stored in a drive. All file system objects in OneDriveare returned as driveItem resources (which are JSON objects).

This example returns the collection of child DriveItems for the root DriveItem.

Note: This example requires Chilkat v9.5.0.97 or greater.

For more information, see https://learn.microsoft.com/en-us/onedrive/developer/rest-api/api/driveitem_list_children?view=odsp-graph-online

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#include <CkJsonObjectW.h>
#include <CkHttpW.h>
#include <CkDateTimeW.h>

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

    // This example uses the OAuth client credentials flow.
    // See How to Create an Azure App Registration for OAuth 2.0 Client Credentials

    // Use your client ID, client secret, and tenant ID in the following lines
    CkJsonObjectW json;
    json.UpdateString(L"client_id",L"2871da2c-8176-4b7f-869b-2311aa82e743");
    json.UpdateString(L"client_secret",L"2hu9Q~r5QuryUcEkNbg1btLtnfU1VUXzhSCG6brH");
    json.UpdateString(L"scope",L"https://graph.microsoft.com/.default");
    json.UpdateString(L"token_endpoint",L"https://login.microsoftonline.com/114d7ed6-71bf-4dbe-a866-748364121bf2/oauth2/v2.0/token");

    CkHttpW http;
    http.put_AuthToken(json.emit());

    // Sends the following GET request:
    // GET https://graph.microsoft.com/v1.0/users/{user-id}/drive/items/{item-id}/children

    // Use your specific Id instead of what we're using here:
    http.SetUrlVar(L"userId",L"4fe732c3-322e-4a6b-b729-2fd1eb5c6104");
    http.SetUrlVar(L"itemId",L"root");

    const wchar_t *resp = http.quickGetStr(L"https://graph.microsoft.com/v1.0/users/{$userId}/drive/items/{$itemId}/children");
    if (http.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    // The response should be JSON.
    json.put_EmitCompact(false);
    json.Load(resp);

    // A successful response should return a status code of 200.
    if (http.get_LastStatus() != 200) {
        wprintf(L"%s\n",json.emit());
        wprintf(L"Response status = %d\n",http.get_LastStatus());
        return;
    }

    wprintf(L"%s\n",json.emit());

    // See the sample JSON response and output below..

    CkDateTimeW lastMod;
    CkDateTimeW photoTaken;

    // Iterate over the DriveItems in the JSON response:
    // (I tested this example with a root that contains a several folders,
    // a JPG image file, an XML file, and a WAV audio file.)
    int i = 0;
    int numItems = json.SizeOfArray(L"value");
    while (i < numItems) {
        json.put_I(i);
        wprintf(L"-- DriveItem %d\n",i + 1);
        wprintf(L"id: %s\n",json.stringOf(L"value[i].id"));
        wprintf(L"name: %s\n",json.stringOf(L"value[i].name"));
        wprintf(L"size: %d\n",json.IntOf(L"value[i].size"));

        // Get the lastModifiedDateTime
        lastMod.SetFromTimestamp(json.stringOf(L"value[i].fileSystemInfo.lastModifiedDateTime"));

        // Is this a folder?
        if (json.HasMember(L"value[i].folder") == true) {
            wprintf(L"This is a folder with %d children\n",json.IntOf(L"value[i].folder.childCount"));
        }

        if (json.HasMember(L"value[i].file") == true) {
            wprintf(L"This is a file.\n");
            wprintf(L"SHA1 hash: %s\n",json.stringOf(L"value[i].file.hashes.sha1Hash"));
            wprintf(L"mimeType: %s\n",json.stringOf(L"value[i].mimeType"));
        }

        if (json.HasMember(L"value[i].image") == true) {
            wprintf(L"This is an image.\n");
            wprintf(L"height: %d\n",json.IntOf(L"value[i].image.height"));
            wprintf(L"width: %d\n",json.IntOf(L"value[i].image.width"));
        }

        if (json.HasMember(L"value[i].photo") == true) {
            wprintf(L"This is a photo.\n");
            photoTaken.SetFromTimestamp(json.stringOf(L"value[i].photo.takenDateTime"));
            wprintf(L"photo taken on %s\n",photoTaken.getAsRfc822(true));
        }

        if (json.HasMember(L"value[i].audio") == true) {
            wprintf(L"This is an audio file.\n");
            wprintf(L"duration: %d\n",json.IntOf(L"value[i].audio.duration"));
        }

        i = i + 1;
    }

    // The output for the above loop:

    // -- DriveItem 1
    // id: 3A33FCEB9B74CC15!187
    // name: Documents
    // size: 4452847
    // This is a folder with 8 children
    // -- DriveItem 2
    // id: 3A33FCEB9B74CC15!4114
    // name: Downloads
    // size: 18240001
    // This is a folder with 6 children
    // -- DriveItem 3
    // id: 3A33FCEB9B74CC15!4407
    // name: lots-of-files
    // size: 7542
    // This is a folder with 450 children
    // -- DriveItem 4
    // id: 3A33FCEB9B74CC15!4858
    // name: Misc
    // size: 819922938
    // This is a folder with 6 children
    // -- DriveItem 5
    // id: 3A33FCEB9B74CC15!185
    // name: Pictures
    // size: 0
    // This is a folder with 3 children
    // -- DriveItem 6
    // id: 3A33FCEB9B74CC15!186
    // name: Public
    // size: 0
    // This is a folder with 0 children
    // -- DriveItem 7
    // id: 3A33FCEB9B74CC15!4860
    // name: hamlet.xml
    // size: 279658
    // This is a file.
    // SHA1 hash: C6AD0095E07141C97A3C6B85778602AD883F5500
    // mimeType: 
    // -- DriveItem 8
    // id: 3A33FCEB9B74CC15!4861
    // name: msg_123_abc.wav
    // size: 155564
    // This is a file.
    // SHA1 hash: 1F51ADBDAADEAABC2D588C2A795AE86758525984
    // mimeType: 
    // This is an audio file.
    // duration: 9720
    // -- DriveItem 9
    // id: 3A33FCEB9B74CC15!4859
    // name: penguins.jpg
    // size: 777835
    // This is a file.
    // SHA1 hash: DF7BE9DC4F467187783ACA68C7CE98E4DF2172D0
    // mimeType: 
    // This is an image.
    // height: 768
    // width: 1024
    // This is a photo.
    // photo taken on Sun, 17 Feb 2008 23:07:31 -0600
    // 

    // -------------------------------------------------------
    // This is the JSON response when this example was tested:

    // {
    //   "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/drive/root/children",
    //   "value": [
    //     {
    //       "createdBy": {
    //         "user": {
    //           "displayName": "Matt Smith",
    //           "id": "3a33fceb9b74cc15"
    //         }
    //       },
    //       "createdDateTime": "2013-06-12T19:49:08.367Z",
    //       "cTag": "adDozQTMzRkNFQjlCNzRDQzE1ITE4Ny42MzYyODA2Nzc4MjI3MzAwMDA",
    //       "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSExODcuMA",
    //       "id": "3A33FCEB9B74CC15!187",
    //       "lastModifiedBy": {
    //         "user": {
    //           "displayName": "Matt Smith",
    //           "id": "3a33fceb9b74cc15"
    //         }
    //       },
    //       "lastModifiedDateTime": "2017-04-17T23:16:22.273Z",
    //       "name": "Documents",
    //       "parentReference": {
    //         "driveId": "3a33fceb9b74cc15",
    //         "id": "3A33FCEB9B74CC15!184",
    //         "path": "/drive/root:"
    //       },
    //       "size": 4452847,
    //       "webUrl": "https://1drv.ms/f/s!ABXMdJvr_DM6gTs",
    //       "fileSystemInfo": {
    //         "createdDateTime": "2013-06-12T19:49:08.366Z",
    //         "lastModifiedDateTime": "2013-06-12T19:49:08.367Z"
    //       },
    //       "folder": {
    //         "childCount": 8
    //       },
    //       "specialFolder": {
    //         "name": "documents"
    //       }
    //     },
    //     {
    //       "createdBy": {
    //         "device": {
    //           "id": "187ffebfaf8fa5"
    //         },
    //         "user": {
    //           "displayName": "Matt Smith",
    //           "id": "3a33fceb9b74cc15"
    //         },
    //         "oneDriveSync": {
    //           "@odata.type": "#microsoft.graph.identity",
    //           "id": "388149ab-8073-45aa-a68c-aac791ec9c1d"
    //         }
    //       },
    //       "createdDateTime": "2016-12-07T14:02:22.417Z",
    //       "cTag": "adDozQTMzRkNFQjlCNzRDQzE1ITQxMTQuNjM2MjQzMzEyODEwMjAwMDAw",
    //       "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSE0MTE0LjE",
    //       "id": "3A33FCEB9B74CC15!4114",
    //       "lastModifiedBy": {
    //         "device": {
    //           "id": "187ffebfaf8fa5"
    //         },
    //         "user": {
    //           "displayName": "Matt Smith",
    //           "id": "3a33fceb9b74cc15"
    //         },
    //         "oneDriveSync": {
    //           "@odata.type": "#microsoft.graph.identity",
    //           "id": "388149ab-8073-45aa-a68c-aac791ec9c1d"
    //         }
    //       },
    //       "lastModifiedDateTime": "2017-03-05T17:21:21.02Z",
    //       "name": "Downloads",
    //       "parentReference": {
    //         "driveId": "3a33fceb9b74cc15",
    //         "id": "3A33FCEB9B74CC15!184",
    //         "path": "/drive/root:"
    //       },
    //       "size": 18240001,
    //       "webUrl": "https://1drv.ms/f/s!ABXMdJvr_DM6oBI",
    //       "fileSystemInfo": {
    //         "createdDateTime": "2016-12-07T14:02:09Z",
    //         "lastModifiedDateTime": "2016-12-07T14:02:09Z"
    //       },
    //       "folder": {
    //         "childCount": 6
    //       }
    //     },
    //     {
    //       "createdBy": {
    //         "device": {
    //           "id": "187ffebfaf8fa5"
    //         },
    //         "user": {
    //           "displayName": "Matt Smith",
    //           "id": "3a33fceb9b74cc15"
    //         },
    //         "oneDriveSync": {
    //           "@odata.type": "#microsoft.graph.identity",
    //           "id": "388149ab-8073-45aa-a68c-aac791ec9c1d"
    //         }
    //       },
    //       "createdDateTime": "2017-06-02T02:14:59.797Z",
    //       "cTag": "adDozQTMzRkNFQjlCNzRDQzE1ITQ0MDcuNjM2MzE5NjY2MDIzNDcwMDAw",
    //       "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSE0NDA3LjA",
    //       "id": "3A33FCEB9B74CC15!4407",
    //       "lastModifiedBy": {
    //         "device": {
    //           "id": "187ffebfaf8fa5"
    //         },
    //         "user": {
    //           "displayName": "Matt Smith",
    //           "id": "3a33fceb9b74cc15"
    //         },
    //         "oneDriveSync": {
    //           "@odata.type": "#microsoft.graph.identity",
    //           "id": "388149ab-8073-45aa-a68c-aac791ec9c1d"
    //         }
    //       },
    //       "lastModifiedDateTime": "2017-06-02T02:16:42.347Z",
    //       "name": "lots-of-files",
    //       "parentReference": {
    //         "driveId": "3a33fceb9b74cc15",
    //         "id": "3A33FCEB9B74CC15!184",
    //         "path": "/drive/root:"
    //       },
    //       "size": 7542,
    //       "webUrl": "https://1drv.ms/f/s!ABXMdJvr_DM6ojc",
    //       "fileSystemInfo": {
    //         "createdDateTime": "2017-06-02T02:13:11Z",
    //         "lastModifiedDateTime": "2017-06-02T02:14:54Z"
    //       },
    //       "folder": {
    //         "childCount": 450
    //       }
    //     },
    //     {
    //       "createdBy": {
    //         "device": {
    //           "id": "187ffebfaf8fa5"
    //         },
    //         "user": {
    //           "displayName": "Matt Smith",
    //           "id": "3a33fceb9b74cc15"
    //         },
    //         "oneDriveSync": {
    //           "@odata.type": "#microsoft.graph.identity",
    //           "id": "388149ab-8073-45aa-a68c-aac791ec9c1d"
    //         }
    //       },
    //       "createdDateTime": "2017-06-02T19:06:10.293Z",
    //       "cTag": "adDozQTMzRkNFQjlCNzRDQzE1ITQ4NTguNjM2MzIwMjcxOTAxNDcwMDAw",
    //       "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSE0ODU4LjA",
    //       "id": "3A33FCEB9B74CC15!4858",
    //       "lastModifiedBy": {
    //         "device": {
    //           "id": "187ffebfaf8fa5"
    //         },
    //         "user": {
    //           "displayName": "Matt Smith",
    //           "id": "3a33fceb9b74cc15"
    //         },
    //         "oneDriveSync": {
    //           "@odata.type": "#microsoft.graph.identity",
    //           "id": "388149ab-8073-45aa-a68c-aac791ec9c1d"
    //         }
    //       },
    //       "lastModifiedDateTime": "2017-06-02T19:06:30.147Z",
    //       "name": "Misc",
    //       "parentReference": {
    //         "driveId": "3a33fceb9b74cc15",
    //         "id": "3A33FCEB9B74CC15!184",
    //         "path": "/drive/root:"
    //       },
    //       "size": 819922938,
    //       "webUrl": "https://1drv.ms/f/s!ABXMdJvr_DM6pXo",
    //       "fileSystemInfo": {
    //         "createdDateTime": "2017-06-02T19:06:02Z",
    //         "lastModifiedDateTime": "2017-06-02T19:06:02Z"
    //       },
    //       "folder": {
    //         "childCount": 6
    //       }
    //     },
    //     {
    //       "createdBy": {
    //         "user": {
    //           "displayName": "Matt Smith",
    //           "id": "3a33fceb9b74cc15"
    //         }
    //       },
    //       "createdDateTime": "2013-06-12T19:49:08.123Z",
    //       "cTag": "adDozQTMzRkNFQjlCNzRDQzE1ITE4NS42MzYxNDU5MzkxMDcyMDAwMDA",
    //       "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSExODUuMA",
    //       "id": "3A33FCEB9B74CC15!185",
    //       "lastModifiedBy": {
    //         "user": {
    //           "displayName": "Matt Smith",
    //           "id": "3a33fceb9b74cc15"
    //         }
    //       },
    //       "lastModifiedDateTime": "2016-11-13T00:31:50.72Z",
    //       "name": "Pictures",
    //       "parentReference": {
    //         "driveId": "3a33fceb9b74cc15",
    //         "id": "3A33FCEB9B74CC15!184",
    //         "path": "/drive/root:"
    //       },
    //       "size": 0,
    //       "webUrl": "https://1drv.ms/f/s!ABXMdJvr_DM6gTk",
    //       "fileSystemInfo": {
    //         "createdDateTime": "2013-06-12T19:49:08.123Z",
    //         "lastModifiedDateTime": "2013-06-12T19:49:08.123Z"
    //       },
    //       "folder": {
    //         "childCount": 3
    //       },
    //       "specialFolder": {
    //         "name": "photos"
    //       }
    //     },
    //     {
    //       "createdBy": {
    //         "user": {
    //           "displayName": "Matt Smith",
    //           "id": "3a33fceb9b74cc15"
    //         }
    //       },
    //       "createdDateTime": "2013-06-12T19:49:08.183Z",
    //       "cTag": "adDozQTMzRkNFQjlCNzRDQzE1ITE4Ni42MzUwNjY2MzM0ODMwMzAwMDA",
    //       "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSExODYuMQ",
    //       "id": "3A33FCEB9B74CC15!186",
    //       "lastModifiedBy": {
    //         "user": {
    //           "displayName": "Matt Smith",
    //           "id": "3a33fceb9b74cc15"
    //         }
    //       },
    //       "lastModifiedDateTime": "2013-06-12T19:49:08.303Z",
    //       "name": "Public",
    //       "parentReference": {
    //         "driveId": "3a33fceb9b74cc15",
    //         "id": "3A33FCEB9B74CC15!184",
    //         "path": "/drive/root:"
    //       },
    //       "size": 0,
    //       "webUrl": "https://1drv.ms/f/s!ABXMdJvr_DM6gTo",
    //       "fileSystemInfo": {
    //         "createdDateTime": "2013-06-12T19:49:08.183Z",
    //         "lastModifiedDateTime": "2013-06-12T19:49:08.183Z"
    //       },
    //       "folder": {
    //         "childCount": 0
    //       },
    //       "shared": {
    //         "owner": {
    //           "user": {
    //             "displayName": "Matt Smith",
    //             "id": "3a33fceb9b74cc15"
    //           }
    //         },
    //         "scope": "anonymous"
    //       },
    //       "specialFolder": {
    //         "name": "public"
    //       }
    //     },
    //     {
    //       "@microsoft.graph.downloadUrl": "https://public.dm2301.livefilestore.com/y4m8Y4r_Ewfy3hIxqpU-_dxvY455X2gAZd3LJXE908zgA1ErQUm5wZpiyz6Rs0YfFb_c5SKgOFZV6HU1YpEmd0MvWbQ-dJVy2lLfRqTUnHEY8znUIQrljmTk1GR2auv4rTitRzWEZztQV0iId2-_FdQj2aZK5sdpmkdbgNuishP0NalJBsLdiBeKBVsy7A_zFTUXbw28ZzJctfyqITNUtBPxmDRzF39UWRjTo74CksCHc4",
    //       "createdBy": {
    //         "device": {
    //           "id": "187ffebfaf8fa5"
    //         },
    //         "user": {
    //           "displayName": "Matt Smith",
    //           "id": "3a33fceb9b74cc15"
    //         },
    //         "oneDriveSync": {
    //           "@odata.type": "#microsoft.graph.identity",
    //           "id": "388149ab-8073-45aa-a68c-aac791ec9c1d"
    //         }
    //       },
    //       "createdDateTime": "2017-06-02T19:08:34.14Z",
    //       "cTag": "aYzozQTMzRkNFQjlCNzRDQzE1ITQ4NjAuMjU3",
    //       "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSE0ODYwLjA",
    //       "id": "3A33FCEB9B74CC15!4860",
    //       "lastModifiedBy": {
    //         "device": {
    //           "id": "187ffebfaf8fa5"
    //         },
    //         "user": {
    //           "displayName": "Matt Smith",
    //           "id": "3a33fceb9b74cc15"
    //         },
    //         "oneDriveSync": {
    //           "@odata.type": "#microsoft.graph.identity",
    //           "id": "388149ab-8073-45aa-a68c-aac791ec9c1d"
    //         }
    //       },
    //       "lastModifiedDateTime": "2017-06-02T19:08:34.14Z",
    //       "name": "hamlet.xml",
    //       "parentReference": {
    //         "driveId": "3a33fceb9b74cc15",
    //         "id": "3A33FCEB9B74CC15!184",
    //         "path": "/drive/root:"
    //       },
    //       "size": 279658,
    //       "webUrl": "https://1drv.ms/u/s!ABXMdJvr_DM6pXw",
    //       "file": {
    //         "hashes": {
    //           "sha1Hash": "C6AD0095E07141C97A3C6B85778602AD883F5500"
    //         },
    //         "mimeType": "application/xml"
    //       },
    //       "fileSystemInfo": {
    //         "createdDateTime": "2017-06-02T19:08:30Z",
    //         "lastModifiedDateTime": "2016-03-03T23:10:30Z"
    //       }
    //     },
    //     {
    //       "@microsoft.graph.downloadUrl": "https://public.dm2301.livefilestore.com/y4mZ4m1N8Vzd40ZtPERT8qEo4nOxt786w5uHDuX4VkessshXBY9z9wyG3rb0GYAAaCYWd64tLCmFcObsobWoLZXkGwgAdBE5ebvHTxmS3W6Z7U0ZzBHviaIa2RufoGhOtAWCImPxRKxID3wPvqPW5jCG31tCXhtrJMuGHnW2TkWg3FxJEvezSkI2PBTGpMzvGVjjX-qsHSnP5OMFyx0ikwVMaGU7_KvGcDUZtj9clz8rXQ",
    //       "createdBy": {
    //         "device": {
    //           "id": "187ffebfaf8fa5"
    //         },
    //         "user": {
    //           "displayName": "Matt Smith",
    //           "id": "3a33fceb9b74cc15"
    //         },
    //         "oneDriveSync": {
    //           "@odata.type": "#microsoft.graph.identity",
    //           "id": "388149ab-8073-45aa-a68c-aac791ec9c1d"
    //         }
    //       },
    //       "createdDateTime": "2017-06-02T19:08:53.167Z",
    //       "cTag": "aYzozQTMzRkNFQjlCNzRDQzE1ITQ4NjEuMjU3",
    //       "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSE0ODYxLjA",
    //       "id": "3A33FCEB9B74CC15!4861",
    //       "lastModifiedBy": {
    //         "device": {
    //           "id": "187ffebfaf8fa5"
    //         },
    //         "user": {
    //           "displayName": "Matt Smith",
    //           "id": "3a33fceb9b74cc15"
    //         },
    //         "oneDriveSync": {
    //           "@odata.type": "#microsoft.graph.identity",
    //           "id": "388149ab-8073-45aa-a68c-aac791ec9c1d"
    //         }
    //       },
    //       "lastModifiedDateTime": "2017-06-02T19:08:53.167Z",
    //       "name": "msg_123_abc.wav",
    //       "parentReference": {
    //         "driveId": "3a33fceb9b74cc15",
    //         "id": "3A33FCEB9B74CC15!184",
    //         "path": "/drive/root:"
    //       },
    //       "size": 155564,
    //       "webUrl": "https://1drv.ms/u/s!ABXMdJvr_DM6pX0",
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    //       "webUrl": "https://1drv.ms/i/s!ABXMdJvr_DM6pXs",
    //       "file": {
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    //         "lastModifiedDateTime": "2009-07-14T05:32:31Z"
    //       },
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    //         "width": 1024
    //       },
    //       "photo": {
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    //     }
    //   ]
    // }
    }