(Delphi ActiveX) Delete File

Permanently deletes a file owned by the user without moving it to the trash. If the target is a folder, all descendants owned by the user are also deleted.

See Google Drive Files delete for more information.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

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;
gAuth: TChilkatAuthGoogle;
rest: TChilkatRest;
bAutoReconnect: Integer;
fileId: WideString;
sbPath: TChilkatStringBuilder;
jsonResponse: WideString;

begin
success := 1;

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

// This example uses a previously obtained access token having permission for the 
// Google Drive scope.

gAuth := TChilkatAuthGoogle.Create(Self);
gAuth.AccessToken := 'GOOGLE-DRIVE-ACCESS-TOKEN';

rest := TChilkatRest.Create(Self);

// Connect using TLS.
bAutoReconnect := 1;
success := rest.Connect('www.googleapis.com',443,1,bAutoReconnect);

// Provide the authentication credentials (i.e. the access token)
rest.SetAuthGoogle(gAuth.ControlInterface);

// To delete a file, we must use the fileId.
// This must've been obtained by listing or searching for the file
// to get the metadata.
// Assume we already did that an have the fileId
fileId := '0B53Q6OSTWYoldUprZVU1ZVQ5Z0k';

sbPath := TChilkatStringBuilder.Create(Self);
sbPath.Append('/drive/v3/files/');
sbPath.Append(fileId);

jsonResponse := rest.FullRequestNoBody('DELETE',sbPath.GetAsString());
if (rest.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;

// A successful response will have a status code equal to 204 and the response body is empty.
// (If not successful, then there should be a JSON response body with information..)
if (rest.ResponseStatusCode <> 204) then
  begin
    Memo1.Lines.Add('response status code = ' + IntToStr(rest.ResponseStatusCode));
    Memo1.Lines.Add('response status text = ' + rest.ResponseStatusText);
    Memo1.Lines.Add('response header: ' + rest.ResponseHeader);
    Memo1.Lines.Add('response JSON: ' + jsonResponse);
    Exit;
  end;

Memo1.Lines.Add('File deleted.');
end;