(MFC) OneDrive -- List Drives

Example to retrieve the list of Drive resources available for a target User or Group.

Note: This example requires Chilkat v9.5.0.68 or greater.

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

See Also: Using MFC CString in Chilkat

#include <CkHttp.h>
#include <CkJsonObject.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    CkHttp http;

    // Use your previously obtained access token here:
    // See the following examples for getting an access token:
    //    Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
    //    Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
    //    Refresh Access Token (Azure AD v2.0 Endpoint).
    //    Refresh Access Token (Azure AD Endpoint).

    // (Make sure your token was obtained with the FilesRead or Files.ReadWrite scope.)
    http.put_AuthToken("MICROSOFT_GRAPH_ACCESS_TOKEN");

    // Sends the following GET request:
    // GET https://graph.microsoft.com/v1.0/me/drives

    const char *resp = http.quickGetStr("https://graph.microsoft.com/v1.0/me/drives");
    if (http.get_LastMethodSuccess() != true) {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

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

    // A successful response should return a status code of 200.
    if (http.get_LastStatus() != 200) {
        strOut.append(json.emit());
        strOut.append("\r\n");
        strOut.append("Response status = ");
        strOut.appendInt(http.get_LastStatus());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    strOut.append(json.emit());
    strOut.append("\r\n");

    // Sample output:

    // 	{
    // 	  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#drives",
    // 	  "value": [
    // 	    {
    // 	      "id": "3a33fceb9b74cc15",
    // 	      "driveType": "personal",
    // 	      "owner": {
    // 	        "user": {
    // 	          "displayName": "Matt Smith",
    // 	          "id": "3a33fceb9b74cc15"
    // 	        }
    // 	      },
    // 	      "quota": {
    // 	        "deleted": 0,
    // 	        "remaining": 1114571275977,
    // 	        "state": "normal",
    // 	        "total": 1115617755136,
    // 	        "used": 1046479159
    // 	      }
    // 	    }
    // 	  ]
    // 	}

    // Iterate over the drives in the JSON response:
    int i = 0;
    int numDrives = json.SizeOfArray("value");
    while (i < numDrives) {
        json.put_I(i);
        strOut.append("-- Drive ");
        strOut.appendInt(i + 1);
        strOut.append("\r\n");
        strOut.append("id: ");
        strOut.append(json.stringOf("value[i].id"));
        strOut.append("\r\n");
        // The size will be a number larger than what can fit in a 32-bit integer.
        // Get the integer as a string..
        strOut.append("total: ");
        strOut.append(json.stringOf("value[i].quota.total"));
        strOut.append("\r\n");
        i = i + 1;
    }



    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }