(Delphi DLL) Transition from Imap.ThreadCmd to Imap.QueryThread

Provides instructions for replacing deprecated ThreadCmd method calls with QueryThread.

Note: This example requires Chilkat v11.0.0 or greater.

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, Imap, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
imap: HCkImap;
threadAlg: PWideChar;
charset: PWideChar;
searchCriteria: PWideChar;
bUid: Boolean;
jsonObj: HCkJsonObject;
json: HCkJsonObject;
success: Boolean;

begin
imap := CkImap_Create();

// ...
// ...

threadAlg := 'REFERENCES';
charset := 'UTF-8';
searchCriteria := 'SUBJECT a';
bUid := True;

// ------------------------------------------------------------------------
// The ThreadCmd method is deprecated:

jsonObj := CkImap_ThreadCmd(imap,threadAlg,charset,searchCriteria,bUid);
if (CkImap_getLastMethodSuccess(imap) = False) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

// ...
// ...

CkJsonObject_Dispose(jsonObj);

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

CkImap_putSearchCharset(imap,'UTF-8');

json := CkJsonObject_Create();
success := CkImap_QueryThread(imap,threadAlg,searchCriteria,bUid,json);
if (success = False) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

CkImap_Dispose(imap);
CkJsonObject_Dispose(json);

end;