Fórum Pesquisa em memo? #171600

Olha amigo,

Veja um exemplo que implementei para vc.

Atensiosamente,

Daniel Araújo

unit Unit1;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ComCtrls, [b:ac321f200f]RichEdit[/b:ac321f200f];

type

TForm1 = class(TForm)
Memo1: TMemo;
Button1: TButton;
procedure Button1Click(Sender: TObject);
procedure FindDialog1Find(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
FindDialog1 :TFindDialog;
function FindText(const SearchStr: string;
StartPos, Length: Integer; Options: TSearchTypes): Integer;

end;

var
Form1: TForm1;

implementation

{$R *.dfm}

function TForm1.FindText(const SearchStr: string;
StartPos, Length: Integer; Options: TSearchTypes): Integer;
var
Find: TFindText;
Flags: Integer;
begin
with Find.chrg do
begin
cpMin := StartPos;
cpMax := cpMin + Length;
end;
Flags := 0;
if stWholeWord in Options then Flags := Flags or FT_WHOLEWORD;
if stMatchCase in Options then Flags := Flags or FT_MATCHCASE;
Find.lpstrText := PChar(SearchStr);
Result := SendMessage(Memo1.Handle, EM_FINDTEXT, Flags, LongInt(@Find));
end;


procedure TForm1.Button1Click(Sender: TObject);
begin
FindDialog1.Position := Point(Memo1.Left + Memo1.Width, Memo1.Top);
FindDialog1.Execute;
end;


procedure TForm1.FindDialog1Find(Sender: TObject);
var
FoundAt: LongInt;
StartPos, ToEnd: Integer;
begin
with Memo1 do
begin
if SelLength <> 0 then
StartPos := SelStart + SelLength
else

StartPos := 0;
ToEnd := Length(Text) - StartPos;

FoundAt := FindText(FindDialog1.FindText, StartPos, ToEnd, [stMatchCase]);
if FoundAt <> -1 then
begin
SetFocus;
SelStart := FoundAt;
SelLength := Length(FindDialog1.FindText);
end;
end;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
[b:ac321f200f] FindDialog1 := TFindDialog.Create(Self); [/b:ac321f200f]end;

procedure TForm1.FormDestroy(Sender: TObject);
begin
[b:ac321f200f]FindDialog1.Free;[/b:ac321f200f]end;

end.