TIELayer.UserDataLen

Declaration

property UserDataLen: Integer;

Description

Specifies the size of the data stored in the 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

If you leave UserDataLen=0, you are responsible for freeing the memory you have assigned to UserData yourself!

Default: 0

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( TMyRecord );
end;

TIELayer.UserDataLen