学步园

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ComCtrls, Shellapi, RichEdit;

type
  TForm1 = class(TForm)
    RichEdit1: TRichEdit;
    RichEdit2: TRichEdit;
    Button1: TButton;
    Button2: TButton;
    procedure FormCreate(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
    procedure InitRichEditURLDetection(RE: TRichEdit);
    procedure WndProc(var Msg: TMessage); override;
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
var
  s: string;
begin
  InitRichEditURLDetection(RichEdit1);
  s := 'http://www.yesky.com' + #13#10 + '现学现用' + #13#10;
  RichEdit1.Text := s;
  s := 'http://www.yesky.com' + #13#10 + 'mailto:software@chinabyte.com';
  RichEdit2.Text := s;
end;

//这个是我们自定义的InitRichEditURLDetection过程
//它是最关键的一步

procedure TForm1.InitRichEditURLDetection(RE: TRichEdit);
var
  mask: Word;
  a: TtextAttributes;
begin

  mask := SendMessage(RE.Handle, EM_GETEVENTMASK, 0, 0);
  SendMessage(RE.Handle, EM_SETEVENTMASK, 0, mask or ENM_LINK);
  SendMessage(RE.Handle, EM_SETTARGETDEVICE, 0, 0);
  //SendMessage(RE.Handle, EM_AUTOURLDETECT, Integer(True), 0);
 // SendMessage(RE.Handle, EM_GETTEXTEX, 0, 0);
  //a := TtextAttributes.Create(RE, atSelected);
  //a.Color := clRed;
end;

//Form的WndProc过程
procedure TForm1.WndProc(var Msg: TMessage);
var
  p: TENLink;
  sURL: string;
  CE: TRichEdit;
begin
  if (Msg.Msg = WM_NOTIFY) then
  begin
    if (PNMHDR(Msg.lParam).code = EN_LINK) then
    begin
      p := TENLink(Pointer(TWMNotify(Msg).NMHdr)^);
      if (p.Msg = WM_LBUTTONDOWN) then
      begin
        try
          CE := TRichEdit(Form1.ActiveControl);
          SendMessage(CE.Handle, EM_EXSETSEL, 0, Longint(@(p.chrg)));
          sURL := CE.SelText;
          form1.Caption := sURL;
          //ShellExecute(Handle, 'open', PChar(sURL), 0, 0, SW_SHOWNORMAL);
        except
        end;
      end;
    end;
  end;
  inherited;
end;

//此处可以为任意文本添加链接
procedure TForm1.Button1Click(Sender: TObject);
var
  cf2: CHARFORMAT2;
 // st : TSearchTypes;
  iPos : integer;
begin
{
  RichEdit1.SelStart := 0;
  RichEdit1.SelLength := 4;
  ZeroMemory(@cf2, sizeof(CHARFORMAT2));
  cf2.cbSize := sizeof(CHARFORMAT2);
  cf2.dwMask := CFM_LINK;
  cf2.dwEffects := CFE_LINK;
  RichEdit1.Perform(EM_SETCHARFORMAT, SCF_SELECTION, integer(@cf2));
  RichEdit1.SelStart := length(Richedit1.Text);
}

  fillchar(cf2, sizeof(CHARFORMAT2),0);//
  cf2.cbSize:= sizeof(CHARFORMAT2);
  cf2.dwMask:= CFM_LINK;
  cf2.dwEffects:= cf2.dwEffects or CFE_LINK or CFE_HIDDEN;
  // RichEdit1 给特定的文本加上链接
  // iPos := RichEdit1.FindText('现学现用',0,Length('现学现用'),[stWholeWord]);
  SendMessage(RichEdit1.Handle, EM_SETCHARFORMAT, SCF_USEUIRULES, integer(@cf2));

end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  close;
end;

end.

{
不知道这周的事情会不会顺利,总有种感觉,可能会发生些什么事.
}