unit1.pas

《Delphi7编程100例》代码,书配资料

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls ,winsock;

type
  TForm1 = class(TForm)
    Button1: TButton;
    Edit1: TEdit;
    Memo1: TMemo;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

function ToUnicode(str: string;dest:PWidechar):integer;
function NetMessageBufferSend(servername:PWideChar;
                              MsgName:PWideChar;
                              FromName:PWideChar;
                              Buf:PWideChar;
                              var BufLen:integer):integer;cdecl;

var
  Form1: TForm1;

implementation

{$R *.DFM}

function NetMessageBufferSend;external 'netapi32.dll' name 'NetMessageBufferSend';

function ToUnicode(str: string;dest:PWidechar):integer;
var len:integer;
begin
  StringtoWidechar(str,dest,len);
  result:=len;
end;


function SendMsg(ToStr,FromStr,Msg:string):integer;
var
  ToName:array [0..64] of WideChar;
  WMsgText:array [0..1000] of WideChar;
  MsgLen,i:integer;
begin
  for i:=0 to 64 do ToName[i]:=#0;//NULL
  ToUnicode(ToStr,ToName);
  for i:=0 to 1000 do WMsgText[i]:=#0;//NULL
  ToUnicode(Msg,WMsgText);
  Result:=NetMessageBufferSend(nil,ToName,nil,@WMsgText,MsgLen)
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  try
    SendMsg(Edit1.text,'jason',Memo1.text);
  except
    Exit;
  end;

end;

end.