Как узнать физические координаты каретки в пикселях?
{TRichEdit}
var
pt: TPoint;
begin with richedit1 do begin
Perform(messages.EM_POSFROMCHAR, WPARAM(@pt), selstart);
label1.caption := Format('(%d, %d)', [pt.x, pt.y]);
end;
end;
{TMemo and TEdit}
var
r: LongInt;
begin with memo1 do begin
r := Perform(messages.EM_POSFROMCHAR, selstart, 0);
if r >= 0then begin
label1.caption := IntToStr(HiWord(r));
label2.caption := IntToStr(LoWord(r));
end;
end;
end;
Взято с Delphi Knowledge Base