How to highlight a specific line in source editor using OpenToolsAPI

Question

Is it possible to highlight a specific line in active editor window just like Delphi IDE does when highlighting compiler errors?

Answer 1

If it's OK to just go to a certain line in the topmost editor then try this:

procedure GotoLine(LineNumber: Integer);
var
  EditorServices: IOTAEditorServices;
  Buffer: IOTAEditBuffer;
  Position: IOTAEditPosition;
begin
  if not Supports(BorlandIDEServices, IOTAEditorServices, EditorServices) then
    Exit;
  Buffer := EditorServices.TopBuffer;
  if not Assigned(Buffer) then
    Exit;
  Position := Buffer.EditPosition;
  if not Assigned(Position) then
    Exit;
  Position.GotoLine(LineNumber);
  Buffer.TopView.Paint;
end;