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TMEMO How to get line of the tmemo underneath mouse cursor?

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Josh:
Hi

How can I get the line of the text undeneath the mouse cursor of a tmemo, the caretpos is no use as you have to click the line? Hopefully there is a cross platfprm way.

Ideally if there is a way to convert the mouse.cursor ordinates to the tmemo to get the line underneath..

Thnks in advance.

rvk:
For Windows ok?

Something like this:


--- Code: Pascal  [+][-]window.onload = function(){var x1 = document.getElementById("main_content_section"); if (x1) { var x = document.getElementsByClassName("geshi");for (var i = 0; i < x.length; i++) { x[i].style.maxHeight='none'; x[i].style.height = Math.min(x[i].clientHeight+15,306)+'px'; x[i].style.resize = "vertical";}};} ---uses Windows; procedure TForm1.Memo1MouseMove(Sender: TObject; Shift: TShiftState; X, Y: integer);var  Pt: integer;  Idx: DWord;  CharIdx, LineIdx, Col: word;begin  Pt := (X and $FFFF) or ((Y and $FFFF) shl 16);  Idx := SendMessage(Memo1.Handle, EM_CHARFROMPOS, 0, Pt); // linesindex and character index in memo  CharIdx := Idx and $FFFF;  LineIdx := (Idx shr 16) and $FFFF;  Col := Idx - SendMessage(Memo1.Handle, EM_LINEINDEX, LineIdx, 0); // get col within line  Inc(LineIdx); // was 0-based  Inc(Col); // was 0-based  Label1.Caption := Format('X %d  Y %d', [X, Y]);  Label2.Caption := Format('Line: %d Pos: %d', [LineIdx, Col]);end;
Notes:
- Pos doesn't go beyond the line.
- except for the last character. If mouse is beyond the line the Pos is Linelength + 1.

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