DateUtils.IsPM - 判断时间是否是下午

unit Unit1;interfaceuses  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,  Dialogs, StdCtrls;type  TForm1 = class(TForm)    procedure FormCreate(Sender: TObject);  end;var  Form1: TForm1;implementation{$R *.dfm}uses DateUtils;procedure TForm1.FormCreate(Sender: TObject);var  t1,t2: TDateTime;  b1,b2: Boolean;begin  t1 := EncodeDateTime(2009, 5, 21, 11, 22, 33, 999);  t2 := EncodeDateTime(2009, 5, 21, 12, 22, 33, 999);  b1 := IsPM(t1); //False;  b2 := IsPM(t2); //True;  ShowMessage(BoolToStr(b1, True));  ShowMessage(BoolToStr(b2, True));end;end.