(Delphi DLL) Outlook -- List Attachments for a Specific Message

Demonstrates how to list the attachments for a particular email message.

Note: This example requires Chilkat v9.5.0.67 or greater.

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

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, StringBuilder, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: HCkHttp;
sbResponse: HCkStringBuilder;
messageId: PWideChar;
success: Boolean;
json: HCkJsonObject;

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

http := CkHttp_Create();

// 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).

CkHttp_putAuthToken(http,'MICROSOFT_GRAPH_ACCESS_TOKEN');

sbResponse := CkStringBuilder_Create();

// Sends:  GET /users/{user_id | userPrincipalName}/messages/{message_id}/attachments
// Note: It is also possible to use the literal string "me" for the current logged-on user.
// For example: GET /me/messages/{message_id}/attachments

CkHttp_ClearUrlVars(http);
CkHttp_SetUrlVar(http,'userPrincipalName','chilkatsoft@outlook.com');

// Assume we already have a message ID from previously listing the messages in a folder
messageId := 'AAMkADYzZWE3YmZmLWU0YzgtNGNkZC04MGE1LWFiYTFlNTRlY2QwYQBGAAAAAAAu7cUXL5YOTrdsUIw7-v8FBwBUcG0qWqkmQYqWLHQataQxAACnwqJUAABUcG0qWqkmQYqWLHQataQxAACnwrnOAAA=';
CkHttp_SetUrlVar(http,'message_id',messageId);

// Send the request to list the messages.
success := CkHttp_QuickGetSb(http,'https://graph.microsoft.com/v1.0/users/{$userPrincipalName}/messages/{$message_id}/attachments',sbResponse);
if ((success <> True) and (CkHttp_getLastStatus(http) = 0)) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

json := CkJsonObject_Create();
CkJsonObject_LoadSb(json,sbResponse);
CkJsonObject_putEmitCompact(json,False);

Memo1.Lines.Add('Status code = ' + IntToStr(CkHttp_getLastStatus(http)));
if (CkHttp_getLastStatus(http) <> 200) then
  begin
    Memo1.Lines.Add(CkJsonObject__emit(json));
    Memo1.Lines.Add('Failed.');
  end;

CkStringBuilder_Clear(sbResponse);
CkJsonObject_EmitSb(json,sbResponse);
CkStringBuilder_WriteFile(sbResponse,'qa_output/attachments.txt','utf-8',False);

Memo1.Lines.Add('OK');

CkHttp_Dispose(http);
CkStringBuilder_Dispose(sbResponse);
CkJsonObject_Dispose(json);

end;