Delphi ActiveX

Transition from Imap.FetchHeaders to Imap.FetchMsgSet

Provides instructions for replacing deprecated FetchHeaders method calls with FetchMsgSet. Delphi ActiveX

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
imap: TChilkatImap;
mset: TMessageSet;
bundleObj: IChilkatEmailBundle;
headersOnly: Integer;
bundleOut: TChilkatEmailBundle;

begin
success := 0;

imap := TChilkatImap.Create(Self);

// ...
// ...

mset := TMessageSet.Create(Self);
success := imap.QueryMbx('FROM joe@example.com',1,mset.ControlInterface);
// ...
// ...

// ------------------------------------------------------------------------
// The FetchHeaders method is deprecated:

bundleObj := imap.FetchHeaders(mset.ControlInterface);
if (imap.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// ...
// ...

// ------------------------------------------------------------------------
// Do the equivalent using FetchMsgSet.
// Your application creates a new, empty EmailBundle object which is passed 
// in the last argument and filled upon success.

headersOnly := 1;

bundleOut := TChilkatEmailBundle.Create(Self);
success := imap.FetchMsgSet(headersOnly,mset.ControlInterface,bundleOut.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;
end;