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Procedure OnMouseWheel(Var Msg :TMsg;var Handled:Boolean);
begin
  if Msg.message = WM_MouseWheel then
  begin
    if Msg.wParam > 0 then
     begin
       if DBGrid.Focused then
       begin
         SendMessage(DBGrid1.Handle,WM_KEYDOWN,VK_UP,0);
       end;
     end
    else
     begin
       if DBGrid.Focused then
         SendMessage(DBGrid1.Handle,WM_KEYDOWN,VK_DOWN,0);
     end;
    Handled:= True;
  end;
end;
ÐèÒªÔÚForm´´½¨µÄʱºòдÈë
Application.OnMessage:=OnMouseWheel; // ½Ø»ñÊó±ê¹ö¶¯Ê¼þ


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var
   s:string;
   ps:Pchar;
   b:pbyte;
   len:integer;
begin
 &nb ......

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DelphiÖÐFormat×Ö·û´®ËµÃ÷
function Format(const Format: string; const Args: array of const):
string;
Format×Ö·û´®ËµÃ÷£º
"%" [index ":"] ["-"] [width] ["." prec] type
(1)
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  ......

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Delphi ´´½¨Ä¿Â¼¼°Ð´ÈÕÖ¾Îļþ
var
TF: TextFile;
LogFile: string;
txt :string;
sysDir:string;
//´´½¨°´Å¥
procedure TForm1.Button1Click(Sender: TObject);
begin
sysDir:=extractfilepath(application.ExeName );
if not directoryexists(sysdir+'log\') then
createdir(sysdir+'log ......

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