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(MFC) Outlook -- List Selected Fields in Messages

Demonstrates how to list the messages in a particular Outlook mailbox folder, but selects particular fields to be returned.

This uses the OData $select system query option. See OData System Query Option $select for general information.

Also see OData URL Conventions for information about $select and other query options.

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

This example applies to: Exchange Online | Office 365 | Hotmail.com | Live.com | MSN.com | Outlook.com | Passport.com

Chilkat C/C++ Library Downloads

MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkHttp.h>
#include <CkStringBuilder.h>
#include <CkHashtable.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).

    http.put_AuthToken("MICROSOFT_GRAPH_ACCESS_TOKEN");

    CkStringBuilder sbResponse;

    // In this example, we'd like to get the messages in the folder "/Inbox",
    // but we must specify the corresponding folder_id.  The best way to do this is to create
    // a local map of folderPaths-to-folderIds.
    // This example does it:  Create Outlook Folder Map)
    CkHashtable htFolderMap;
    CkStringBuilder sbMap;
    sbMap.LoadFile("qa_data/outlook/folderMap.xml","utf-8");
    htFolderMap.AddFromXmlSb(sbMap);

    // Get the ID for the "/Inbox" folder:
    const char *folderId = htFolderMap.lookupStr("/Inbox");
    if (htFolderMap.get_LastMethodSuccess() != true) {
        strOut.append("Folder ID not found");
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    http.SetUrlVar("folder_id",folderId);

    // Send the request to list the messages, returning only the subject and from address.
    bool success = http.QuickGetSb("https://graph.microsoft.com/v1.0/me/mailFolders/{$folder_id}/messages?$select=subject,from",sbResponse);
    if ((success != true) && (http.get_LastStatus() == 0)) {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    CkJsonObject json;
    json.LoadSb(sbResponse);
    json.put_EmitCompact(false);

    strOut.append("Status code = ");
    strOut.appendInt(http.get_LastStatus());
    strOut.append("\r\n");
    if (http.get_LastStatus() != 200) {
        strOut.append(json.emit());
        strOut.append("\r\n");
        strOut.append("Failed.");
        strOut.append("\r\n");
    }

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

    // In my test case, the raw JSON returned is shown below.
    // Iterate over the messages to get information about each..

    int i = 0;
    int numMessages = json.SizeOfArray("value");
    while (i < numMessages) {
        json.put_I(i);

        // This is the id for the email message.
        // For REST API calls that require particular email message id, this is what should be used..
        const char *messageId = json.stringOf("value[i].id");
        strOut.append("id: ");
        strOut.append(messageId);
        strOut.append("\r\n");
        strOut.append("From Name: ");
        strOut.append(json.stringOf("value[i].from.emailAddress.name"));
        strOut.append("\r\n");
        strOut.append("From Addr: ");
        strOut.append(json.stringOf("value[i].from.emailAddress.address"));
        strOut.append("\r\n");
        strOut.append("Subject: ");
        strOut.append(json.stringOf("value[i].subject"));
        strOut.append("\r\n");
        strOut.append("--");
        strOut.append("\r\n");

        i = i + 1;
    }

    // The output of the above loop:
    // 
    // 	id: AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAM6Jj1oAAAA=
    // 	From Name: Chilkat Software
    // 	From Addr: admin@chilkat.io
    // 	Subject: This is an example email from chilkat.io
    // 	--
    // 	id: AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAM6Jj1kAAAA=
    // 	From Name: Chilkat Support
    // 	From Addr: chilkat.support@gmail.com
    // 	Subject: Hello from GMail
    // 	--
    // 	id: AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAHrLra8AAAA=
    // 	From Name: Microsoft Office 365
    // 	From Addr: MicrosoftOffice365@email.office.com
    // 	Subject: The latest for you in Office 365
    // 	--
    // 	id: AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAADLHd_EAAAA=
    // 	From Name: Amazon Web Services
    // 	From Addr: no-reply-aws@amazon.com
    // 	Subject: Amazon SES Address Verification Request in region US West (Oregon)
    // 	--
    // 	id: AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAADLHd_AAAAA=
    // 	From Name: Amazon Web Services
    // 	From Addr: no-reply-aws@amazon.com
    // 	Subject: Amazon SES Address Verification Request in region US West (Oregon)
    // 	--
    // 	id: AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAAG6l8UAAAA=
    // 	From Name: Microsoft
    // 	From Addr: msa@communication.microsoft.com
    // 	Subject: Updates to our terms of use and privacy statement
    // 	--
    // 

    // ------------------------------------------------------
    // This is the raw JSON response:

    // {
    //   "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/mailFolders('AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA')/messages(subject,from)",
    //   "value": [
    //     {
    //       "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AADOpwfo\"",
    //       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAM6Jj1oAAAA=",
    //       "subject": "This is an example email from chilkat.io",
    //       "from": {
    //         "emailAddress": {
    //           "name": "Chilkat Software",
    //           "address": "admin@chilkat.io"
    //         }
    //       }
    //     },
    //     {
    //       "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AADOpwfn\"",
    //       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAM6Jj1kAAAA=",
    //       "subject": "Hello from GMail",
    //       "from": {
    //         "emailAddress": {
    //           "name": "Chilkat Support",
    //           "address": "chilkat.support@gmail.com"
    //         }
    //       }
    //     },
    //     {
    //       "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AAB63d8O\"",
    //       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAHrLra8AAAA=",
    //       "subject": "The latest for you in Office 365",
    //       "from": {
    //         "emailAddress": {
    //           "name": "Microsoft Office 365",
    //           "address": "MicrosoftOffice365@email.office.com"
    //         }
    //       }
    //     },
    //     {
    //       "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AAA1jyl7\"",
    //       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAADLHd_EAAAA=",
    //       "subject": "Amazon SES Address Verification Request in region US West (Oregon)",
    //       "from": {
    //         "emailAddress": {
    //           "name": "Amazon Web Services",
    //           "address": "no-reply-aws@amazon.com"
    //         }
    //       }
    //     },
    //     {
    //       "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AAA1jyl6\"",
    //       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAADLHd_AAAAA=",
    //       "subject": "Amazon SES Address Verification Request in region US West (Oregon)",
    //       "from": {
    //         "emailAddress": {
    //           "name": "Amazon Web Services",
    //           "address": "no-reply-aws@amazon.com"
    //         }
    //       }
    //     },
    //     {
    //       "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AAAGt5YG\"",
    //       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAAG6l8UAAAA=",
    //       "subject": "Updates to our terms of use and privacy statement",
    //       "from": {
    //         "emailAddress": {
    //           "name": "Microsoft",
    //           "address": "msa@communication.microsoft.com"
    //         }
    //       }
    //     }
    //   ]
    // }


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }

 

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