(Delphi DLL) List all Labels in the User's Mailbox

List all Labels in the GMail User's Mailbox

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
success: Boolean;
http: HCkHttp;
userId: PWideChar;
url: PWideChar;
sb: HCkStringBuilder;
json: HCkJsonObject;

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,'GMAIL-ACCESS-TOKEN');

userId := 'me';
CkHttp_SetUrlVar(http,'userId',userId);

url := 'https://www.googleapis.com/gmail/v1/users/{$userId}/labels';

CkHttp_putSessionLogFilename(http,'c:/temp/qa_output/sessionLog.txt');

// Get the list of GMail labels as JSON.
sb := CkStringBuilder_Create();
success := CkHttp_QuickGetSb(http,url,sb);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

json := CkJsonObject_Create();
CkJsonObject_LoadSb(json,sb);
CkJsonObject_putEmitCompact(json,False);
Memo1.Lines.Add(CkJsonObject__emit(json));

if (CkHttp_getLastStatus(http) <> 200) then
  begin
    Memo1.Lines.Add('Failed.');
    Exit;
  end;

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

end;