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function ExpCalc(exp: string): string;
var
vScript: Variant;
begin
vScript := CreateOleObject('ScriptControl');
vScript.Language := 'VBScript';
Result := vScript.Eval(exp);
end;
procedure TForm1.Button1Click(Sender: TObject);
var
s:string;
begin
s:=ExpCalc('100 *4.17/0.5*(55.22+22)/3.14');
ShowMessage(s);
end;
 


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delphi±¨¾¯ÉùÒô Beep¡¢MessageBeep ºÍ Windows.Beep


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procedure TForm1.Timer1Timer(Sender: TObject);
begin
   Windows.Beep(1200+i_f,10+i_f);
   if i_f<2000 then
   begin
      inc(i_f);
   end
end;
== ......

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DelphiÖÐʵÏÖC++/JavaÀàËÆ¾²Ì¬±äÁ¿µÄ¹¦ÄÜ

ÔÚÍøÉÏ¿´µ½ºÜ¶àÈ˶¼ÔÚΪDelphiÊÇ·ñÖ§³ÖC++/JavaÖеľ²Ì¬±äÁ¿¼°¾²Ì¬·½·¨µÄ¹¦ÄܶøÀ§ÈÅ,ÆäʵÕâÔÚDelphiÖÐÊǺܼòµ¥µÄ.
¾²Ì¬·½·¨¾ÍÊÇʹÓÃClass Function. ¾²Ì¬±äÁ¿ÔòʹÓõ¥Ôª¾Ö²¿±äÁ¿À´ÊµÏÖ. ´úÂëÈçÏÂ:
//=========================================
// StaticVarTestU - ¶¨ÒåÁË¿ÉÒÔ¼ÆÊýµÄÀ࣬ͨ¹ýÀà·½·¨¼´¿É·ÃÎÊ´ËÀàµÄ¶ÔÏóÊý ......

DelPhiÏÂÓÃCDO·¢ËÍÓÊÏäʵÀý

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×¢£ºCDONTSΪCDOµÄ×Ó¼¯£¬½öÖ§³ÖWinNT/Win2K£¬WinXPÒÔÉÏÇëÓÃCDO;
µ¥ÔªÒýÓÃComObj;
procedure TForm1.Button1Click(Sender: TObject);
var
VCDOMessage:oleVariant;
begin
  vCDOMessage:=CreateOleObject('CDO.Message');
  vcdomessage.from:='MR.F'+'< ......

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