Catch Return Key with BeforeCellKeyDown

[Dimitri]

Hi,

How can we catch the Return Key or the Escape Key with the BeforeCellKeyDown event in a FDBGrid ?

Thank you

Attached to this message is a simple testcase.

UniGUI: 1.90.0.1513

EnterKeyDown_ToSend.rar

[Sherzod]

12 hours ago, Dimitri said:

How can we catch the Return Key or the Escape Key with the BeforeCellKeyDown event in a FDBGrid ?

Sorry, can you please explain in more detail?

12 hours ago, Dimitri said:

Attached to this message is a simple testcase.

How should we work with the testcase?

[Dimitri]

 

I use the BeforeCellKeydown event in ClientEvents.Ext Events :

beforecellkeydown=function beforecellkeydown(sender, td, cellIndex, record, tr, rowIndex, e, eOpts)
{
  var key = e.getKey();
  ajaxRequest(this, "BeforeCellKeyDown", ["keycode="+key], false);
  return true;
}

Then on the UniDBGRid1.OnAjaxEvent :

procedure TMainForm.UniDBGrid1AjaxEvent(Sender: TComponent; EventName: string;
  Params: TUniStrings);
var
  lKey: Integer;
begin
  if EventName = 'BeforeCellKeyDown' then
  begin
    lKey := Params['keycode'].AsInteger;
    UniMemo1.Lines.Add(IntToStr(lKey));
  end;
end;

 

When you are editing a cell, the key pressed is displayed in the memo to the right of the grid. For example, if I press the "A" key, the number 65 is displayed in the memo. If I press the "Tab" key, the number 9 is displayed in the memo. But I can't display the number of the "Return" key in the memo. It also doesn't work with the "Escape" key.

[Sherzod]

1 hour ago, Dimitri said:

When you are editing a cell, the key pressed is displayed in the memo to the right of the grid. For example, if I press the "A" key, the number 65 is displayed in the memo. If I press the "Tab" key, the number 9 is displayed in the memo. But I can't display the number of the "Return" key in the memo. It also doesn't work with the "Escape" key.

It works for me. But with one excluding of course:

The following sequence doesn't work
Enter (works) -> ESC (doesn't work) (and this is normal...)

What do you want to achieve?

[Dimitri]

Ok, thanks for your answer.

I would like to know when the user presses the Return key to exit the cell edition.

Is there any way to know that?

[Sherzod]

Perhaps you need to use another event for this.

[Sherzod]

Or use the "specialkey" event for the column editor:

 

[Dimitri]

It works ! Thanks.

 

function reconfigure(sender, store, columns, oldStore, oldColumns, eOpts) {
  var grid = sender;

  for (var i = 0; i < columns.length; i++) {
    if (columns[i].getEditor()) {
      columns[i].getEditor().on('specialkey', function(field, e) {
        if (e.getKey() == 13) {
          ajaxRequest(grid, "BeforeCellKeyDown", ["keycode=13"], false);
          return e.keyCode;
        }
      })
    }
  }
}