Form's OnKeyDown Event No Longer Handled After Button(s) In UniPdfFrame Clicked

[Frederick]

In my form's OnKeyDown event, I check for the pressing of the ESCAPE key to close the form. Before button(s) of the TUniPdfFrame component are clicked, pressing the ESCAPE key will be trapped. However, after button(s) of the TUniPdfFrame are clicked, the OnKeyDown event is no longer handled.

Why does this happen?

--
Frederick
(UniGUI Complete - Professional Edition 1.90.0.1510)
 

[Farshad Mohajeri]

It happens because when you press a button inside PDF Frame the focus will be transferred to the iframe holding the PDF document.

[Frederick]

4 hours ago, Farshad Mohajeri said:

It happens because when you press a button inside PDF Frame the focus will be transferred to the iframe holding the PDF document.

Is there a way to trap the ESCAPE key press from within the iframe and then close the form?

[Sherzod]

5 hours ago, Frederick said:

Is there a way to trap the ESCAPE key press from within the iframe and then close the form?

One of the possible solutions, it can be done by relaying keydown events to server manualy.

[Frederick]

8 minutes ago, Sherzod said:

One of the possible solutions, it can be done by relaying keydown events to server manualy.

What code should I create and from which event?

[Sherzod]

6 minutes ago, Frederick said:

What code should I create and from which event?

Try this as an approximate solution.

pdfFrame.OnFrameLoaded event:

procedure TMainForm.pdfFrameFrameLoaded(Sender: TObject);
begin
  pdfFrame.JSInterface.JSCode(#1'.iframe.contentDocument.addEventListener("keydown", function(e){ajaxRequest('+ Self.WebForm.JSForm.JSName +', "keydown", ["key="+e.keyCode])});')
end;

 

[Frederick]

Thank you! This works perfectly.