本文整理自网络，侵删。
WeeksInAYear、WeeksInYear、DaysInAYear、DaysInAMonth、DaysInYear、DaysInMonth - 获取指定年月的周、日数
DateUtils.DaysInYear();
DateUtils.DaysInMonth();
DateUtils.DaysInAYear();
DateUtils.DaysInAMonth();
DateUtils.WeeksInYear();
DateUtils.WeeksInAYear();
--------------------------------------------------------------------------------
unit Unit1;
interface
uses
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
dt: TDateTime;
w: Word;
begin
dt := StrToDateTime('2009-5-20 11:22:33');
{指定日期所在年的总天数}
w := DaysInYear(dt); //365
{指定日期所在月的总天数}
w := DaysInMonth(dt); //31
{指定年的总天数}
w := DaysInAYear(2009); //365
{指定年、指定月的总天数}
w := DaysInAMonth(2009, 5); //31
{指定日期所在年的总周数}
w := WeeksInYear(dt); //53
{指定年的总周数}
w := WeeksInAYear(2009); //53
end;
end.
相关阅读 >>
Delphi文件 fileopen 、fileseek等的用法（看红色字体）
Delphi xe10 android安卓 移动端 messagedlg 用法
更多相关阅读请进入《Delphi》频道 >>
