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(Delphi DLL) Get a List of Message IDs in GMail User's MailboxDemonstrates how to get a list of message IDs in a GMail mailbox. The "userId" can be either the user's email address or the special value "me" to indicate the authenticated user. For more information, see https://developers.google.com/gmail/api/v1/reference/users/messages/list
uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, HttpResponse, JsonObject; ... procedure TForm1.Button1Click(Sender: TObject); var http: HCkHttp; resp: HCkHttpResponse; jsonResponse: HCkJsonObject; id: PWideChar; threadId: PWideChar; resultSizeEstimate: Integer; i: Integer; count_i: Integer; begin // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. http := CkHttp_Create(); CkHttp_putAuthToken(http,'ACCESS_TOKEN'); CkHttp_putAccept(http,'application/json'); resp := CkHttp_QuickRequest(http,'GET','https://www.googleapis.com/gmail/v1/users/userId/messages'); if (CkHttp_getLastMethodSuccess(http) <> True) then begin Memo1.Lines.Add(CkHttp__lastErrorText(http)); Exit; end; Memo1.Lines.Add('Response Status Code: ' + IntToStr(CkHttpResponse_getStatusCode(resp))); jsonResponse := CkJsonObject_Create(); CkJsonObject_Load(jsonResponse,CkHttpResponse__bodyStr(resp)); CkJsonObject_putEmitCompact(jsonResponse,False); Memo1.Lines.Add(CkJsonObject__emit(jsonResponse)); if (CkHttpResponse_getStatusCode(resp) <> 200) then begin Memo1.Lines.Add('Failed.'); CkHttpResponse_Dispose(resp); Exit; end; CkHttpResponse_Dispose(resp); // { // "messages": [ // users.messages Resource // ], // "nextPageToken": string, // "resultSizeEstimate": unsigned integer // } resultSizeEstimate := CkJsonObject_IntOf(jsonResponse,'resultSizeEstimate'); i := 0; count_i := CkJsonObject_SizeOfArray(jsonResponse,'messages'); while i < count_i do begin CkJsonObject_putI(jsonResponse,i); id := CkJsonObject__stringOf(jsonResponse,'messages[i].id'); threadId := CkJsonObject__stringOf(jsonResponse,'messages[i].threadId'); i := i + 1; end; CkHttp_Dispose(http); CkJsonObject_Dispose(jsonResponse); end; |
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