Procedure PostKeyEx32( key: Word; Const shift: TShiftState;
                     specialkey: Boolean );
  Type
    TShiftKeyInfo = Record
                      shift: Byte;
                      vkey : Byte;
                    End;
    byteset = Set of 0..7;
  Const
    shiftkeys: Array [1..3] of TShiftKeyInfo =
      ((shift: Ord(ssCtrl); vkey: VK_CONTROL ),
       (shift: Ord(ssShift); vkey: VK_SHIFT ),
       (shift: Ord(ssAlt); vkey: VK_MENU ));
  Var
    flag: DWORD;
    bShift: ByteSet absolute shift;
    i: Integer;
  Begin
    For i := 1 To 3 Do Begin
      If shiftkeys[i].shift In bShift Then 
        keybd_event( shiftkeys[i].vkey, 
                     MapVirtualKey(shiftkeys[i].vkey, 0),
                     0, 0);
    End; { For }
    If specialkey Then 
      flag := KEYEVENTF_EXTENDEDKEY
    Else
      flag := 0;        keybd_event( key, MapvirtualKey( key, 0 ), flag, 0 );
    flag := flag or KEYEVENTF_KEYUP;
    keybd_event( key, MapvirtualKey( key, 0 ), flag, 0 );        For i := 3 DownTo 1 Do Begin
      If shiftkeys[i].shift In bShift Then 
        keybd_event( shiftkeys[i].vkey, 
                     MapVirtualKey(shiftkeys[i].vkey, 0),
                     KEYEVENTF_KEYUP, 0);
    End; { For }
  End; { PostKeyEx32 }    procedure TForm1.SpeedButton1Click(Sender: TObject);
begin
  PostKeyEx32(ord('A'),[],true);
  PostKeyEx32(ord('B'),[],true);
  PostKeyEx32(ord('C'),[],true);
end;