繼承Tcalendar控件，讓當天日期醒目顯示
一、新建一控件
打開Delphi主菜單Cpmponent—New Cpmponent：
二、配置參數
點擊OK鍵，打開Unit單元文件。
三、修改單元文件
unit LyCalendar;
interface
uses
Windows,
Messages, SysUtils, Variants, Classes, Graphics, Controls, //Forms,
Dialogs, Grids, Calendar, ComCtrls, StdCtrls,DateUtils;
type
TLyCalendar = class(TCalendar)
private
{Private declarations }
protected
{Protected declarations }
procedure DrawCell(ACol, ARow: Longint; ARect: TRect; AState:TGridDrawState); override;
public
{Public declarations }
published
{Published declarations }
end;
procedure Register;
implementation
procedure Register;
begin
RegisterComponents('LyComMy', [TLyCalendar]);
end;
procedure TLyCalendar.DrawCell(ACol, ARow:Integer; ARect: TRect; AState: TGridDrawState);
var TheText: string;
vDay: string;
begin
TheText := CellText[ACol, ARow];
vDay := IntToStr(DateUtils.DayOf(Now));
ifvDay = TheText then
begin
//當天顯示樣式
Canvas.Font.Color := clRed;
Canvas.Font.Style:=Canvas.Font.Style+[fsBold];
end
else begin
//被選擇日期顯示樣式
if (gdSelected in AState) or(gdFocused in AState) then
begin
Canvas.Brush.Color := clBlue;
end;
end;
inherited;
end;
end.
四、安裝控件
1、將新的單元文件，存入C:\ProgramFiles\Borland\Delphi7\Projects\Bpl\ 目錄；
2、打開Delphi主菜單Cpmponent—Insert Cpmponent：
3、指定安裝的參數：
按“OK”鍵，打開對話框：
按“compile”鍵，完成安裝。
四、新的控件樣式：
五、源碼下載地址：http://download.csdn.net/detail/lyhoo163/9631356 點擊打開鏈接