Hi,
Thank you.
You can try this approach:
procedure TMainForm.UniPDFFrame1FrameLoaded(Sender: TObject);
begin
(Sender as TUniPDFFrame).JSInterface.JSCode(#1'.iframe.contentWindow.onafterprint=function(){ajaxRequest('#1', "pdialogclosed", [])};');
end;
procedure TMainForm.UniPDFFrame1AjaxEvent(Sender: TComponent; EventName: string;
Params: TUniStrings);
begin
if EventName = 'pdialogclosed' then
ShowMessage('pdialogclosed');
end;