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AutoCompletion

Posted on 2004-04-04
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Last Modified: 2010-05-18
This is a little difficult to explain.

Okay, basically, you know in Delphi where you type Form1. and a little box pops up and gives you a list of possible valid autocompletions?

Well, I'm trying to implement something similar. In an RxRichEdit control, if someone tries to autocomplete something, I want a little box to popup and give them a list of possible completions.

Well, I've done most of it, I just need a little help. So far I've done it as a nonbordered form with a virtual string tree component for the list, now all I need to do is get the top/left values for the form so it can popup where the keyboard cursor is..

I have no clue how to do this and I have searched high and low.

Any help would be appreciated greatly.
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Question by:DelphiAddict
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4 Comments
 

Author Comment

by:DelphiAddict
ID: 10752436
Keyboard caret not cursor. Sorry.
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LVL 11

Expert Comment

by:ZhaawZ
ID: 10752970
You can use function GetCaretPos(var lpPoint : TPoint) to get relative position (top/left) of cursor (caret) in active component.
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Accepted Solution

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ZhaawZ earned 200 total points
ID: 10753001
var
  p : TPoint;
begin
GetCaretPos(p);
p := RxRichEdit.ClientToScreen(p);
(* p.X will be absolute left position of caret, p.Y - top position of caret. Now these could be also top/left values for the form *)
end;
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LVL 11

Expert Comment

by:shaneholmes
ID: 10753514

procedure TForm1.RichEdit1MouseDown(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
var
  pt : TPoint;
begin
 GetCaretPos(pt);
 pt :=  RxRichEdit.ClientToScreen(pt);
 PopUpMenu1.PopUp(pt.x, pt.Y);
end;

Shane
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