TIELayer.UserDataLen

Declaration

property UserDataLen: Integer;

Description

Specifies the length of UserData buffer.

If this value is greater than zero:
◼ When you save the layer (LayersSaveTo..) the content of the UserData buffer is saved (and restored with LayersLoadFrom..)
◼ The user data is freed when the layer is destroyed

Demo

\Demos\LayerEditing\UserDataInLayer\UserDataInLayer.dpr

Example

type
  TMyRecord = record
    SourceText: array[0..255] of AnsiChar;
    SourceWidth: integer;
    SourceHeight: integer;
  end;
  PMyRecord = ^TMyRecord;

var
  rc: PMyRecord;
begin
  New( rc )
  With rc^ do
  begin
    Width := ...;
    Height := ...;
    Text := ...;
  end;
  ImageEnView1.CurrentLayer.UserData := rc;
  ImageEnView1.CurrentLayer.UserDataLen := SizeOf( PMyRecord );
end;

TIELayer.UserDataLen