Pascal (Lazarus/Delphi)

Permanently Delete a Specific GMail Message

See more GMail REST API Examples

Immediately and permanently deletes the specified message. This operation cannot be undone. (This is not the same as moving a message to Trash.) Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Http;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  id: string;
  userId: string;
  url: string;
  responseStr: string;

begin
  success := False;

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

  http := THttp.Create;
  http.AuthToken := 'GMAIL-ACCESS-TOKEN';

  //  The id of the GMail message to delete.
  id := '1669cc9a926bb8c1';
  userId := 'me';

  http.SetUrlVar('userId','me');
  http.SetUrlVar('id',id);

  //  Delete the email.
  url := 'https://www.googleapis.com/gmail/v1/users/{$userId}/messages/{$id}';
  responseStr := http.QuickDeleteStr(url);
  if (http.LastMethodSuccess <> True) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  WriteLn('status = ' + http.LastStatus);

  //  A 204 response indicate success.
  //  It is common for HTTP DELETE operations to respond with a 204 status code with an empty body for success.
  //  You'll find many REST APIs follow this custom..
  if (http.LastStatus <> 204) then
    begin
      WriteLn(responseStr);
      WriteLn('Failed.');
      Exit;
    end;

  WriteLn('Message deleted!');


  http.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.