计算机二级辅导:delphiRichEdit中实现url
来源:优易学  2011-6-5 17:02:31   【优易学:中国教育考试门户网】   资料下载   IT书店
  unit Unit1;
  interface
  uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ComCtrls,RichEdit,Shellapi;
  type
  TForm1 = class(TForm)
  RichEdit1: TRichEdit;
  Button1: TButton;
  procedure FormCreate(Sender: TObject);
  private
  { Private declarations }
  public
  { Public declarations }
  procedure Wndproc(var Message : TMessage); override;
  end;
  var
  Form1: TForm1;
  implementation
  {$R *.dfm}
  procedure TForm1.FormCreate(Sender: TObject);
  var
  mask: Word;
  begin
  mask := SendMessage(RichEdit1.Handle, EM_GETEVENTMASK, 0, 0);
  SendMessage(RichEdit1.Handle, EM_SETEVENTMASK, 0, mask or ENM_LINK);
  SendMessage(RichEdit1.Handle, EM_AUTOURLDETECT, Integer(True), 0);
  //Some text in RichEdit
  RichEdit1.Text := ’Scalabium Software’#13#10 +
  ’ Site is located at www.scalabium.com. Welcome to our site.’;
  end;
  procedure TForm1.WndProc(var Message: TMessage);
  var
  p: TENLink;
  strURL: string;
  begin
  if (Message.Msg = WM_NOTIFY) then
  begin
  if (PNMHDR(Message.lParam).code = EN_LINK) then
  begin
  p := TENLink(Pointer(TWMNotify(Message).NMHdr)^);
  if (p.Msg = WM_LBUTTONDOWN) then
  begin
  SendMessage(RichEdit1.Handle, EM_EXSETSEL, 0, Longint(@(p.chrg)));
  strURL := RichEdit1.SelText;
  ShellExecute(Handle, ’open’, PChar(strURL), 0, 0, SW_SHOWNORMAL);
  end
  end
  end;
  inherited;
  end;
  end.

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