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procedure TForm.Button1Click(Sender Tobject);

var {³ÌÐòÄ£¿éµÄ˵Ã÷²¿·Ö}

Name : string;

begin {³ÌÐòÄ£¿éµÄÓï¾ä²¿·Ö}

Name := Edit1.Text;

Edit2.Text := 'Welcome to Delphi'+Name;

end; {³ÌÐòÄ£¿é½áÊø}

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package PackageName;

requires Package1,Package2¡­.; //Õâ¸ö°üÐèÒªµ÷ÓÃµÄÆäËû°ü

contains //Õâ¸ö°üËù°üº¬µÄµ¥Ôª(µ¥ÔªËùÒýÓõĵ¥ÔªÒ²»á¼ä½ÓµØ°üº¬µ½°üÖУ¬³ý·ÇÒÑÁÐÈërequires×Ó¾äÖÐ)¡£×¢Òâ´Ë´¦µÄµ¥Ôª²»Äܱ»requires×Ó¾äÖеİüËù°üº¬

Unit1 in 'Unit1.pas',

Unit2 in 'Unit2.pas',

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end.

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unit Unit1;¡¡

interface¡¡

uses SysUtils, Windows, Messages, Classes, Graphics, Controls, Forms, Dialogs;¡¡

type

TForm1 = class(TForm) {´°ÌåµÄÀàÐÍ˵Ã÷¿ªÊ¼} //ʹÓñ£Áô×ÖClassÉùÃ÷ÁËÒ»¸öÃû½ÐTForm1µÄÀàÀàÐÍ£¬¸ÃÀàÐÍÊÇ´ÓÀàTForm¼Ì³ÐÏÂÀ´µÄÒ»¸ö¶ÔÏó¡£×¢Ò⣬ÀàÀàÐ͵ıêʶ·ûÒ»°ãÒÔ¡°T¡±´òÍ·£¬ÒÔÇø±ðÓÚÆäËûÊý¾ÝÀàÐÍ¡£Áí Í⣬ÔÚDelphiÖУ¬´óÁ¿µÄ¹¹ÔìÊý¾ÝÀàÐͶ¼ÊÇÒÔ¡°T¡±´òÍ·µÄ¡£Èç¹û²»Ö¸Ã÷׿ÏÈÀ࣬DelphiĬÈϸÃÀà¼Ì³Ð×ÔTObjectÀà¡£

Button1: TButton; //ÏÖÔÚTForm1¶ÔÏóÓÐÁËÒ»¸öÃûΪButton1µÄÓò£ºËüÊÇÄúÔÚ´°ÌåÖмÓÈëµÄ°´Å¥¡£TButtonÊÇÒ»¸ö¶ÔÏóÀàÐÍ£¬Button1ÊÇTbuttonµÄÒ»¸öʵÀý¡£Ëü±»TForm1¶ÔÏóËù°üº¬£¬×÷ΪËüµÄÊý¾ÝÓò¡£Ã¿µ±ÄúÔÚ´°ÌåÖмÓÈëÒ»¸ö²¿¼þʱ£¬²¿¼þµÄÃû³Æ¾Í»á×÷ΪTFom1µÄÓò¼ÓÈëµ½ÀàÐÍ˵Ã÷ÖÐÀ´¡£ÔÚDelphiÖУ¬ÄúËù±àдµÄʼþ´¦Àí¹ý³Ì¶¼ÊÇ´°Ìå¶ÔÏóµÄ·½·¨¡£Ã¿µ±Äú½¨Á¢Ò»¸öʼþ´¦Àí¹ý³Ì£¬¾Í»áÔÚ´°ÌåµÄ¶ÔÏóÀàÐÍÖÐ˵Ã÷Ò»¸ö·½·¨¡£

procedure Button1Click(Sender: TObject); //

private // ¶ÔÏó˽ÓÐÓò£¬ÆäÖеÄÊý¾ÝÓòºÍ·½·¨Ö»Äܱ»±¾¿âµ¥Ôª·ÃÎÊ

{ Private declarations }

public //¶ÔÏó¹«ÓÐÓò£¬ÆäÖеÄÊý¾ÝÓòºÍ·½·¨¿ÉÒÔ±»ÆäËü¿âµ¥Ôª·ÃÎÊ

{ Public declarations }

end; {´°ÌåµÄÀàÐÍ˵Ã÷½áÊø}¡¡

var

Form1: TForm1; {˵Ã÷Ò»¸ö´°Ìå±äÁ¿} //ÉùÃ÷TForm1ÀàµÄÒ»¸öʵÀýForm1

implementation¡¡//¶ÔÏó¹ý³Ì»òº¯ÊýµÄ³ÌÐò´úÂë¿ÉÒÔ·ÅÔÚ¿âµ¥ÔªµÄimplementation²¿·Ö¡£¡¡

{$R *.DFM} ¡¡

end.¡¡

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׿ÏÈ :=ºó´ú

Form2 :=Form1;

type

TDataForm = class(TForm)

Button1:TButton;

Edit1:TEdit;

DataGrid1:TDataGrid;

Database1:TDatabase;

TableSet1:TTableSet;

VisibleSession1:TVisibleSession;

private{˽ÓÐÓò˵Ã÷}

public

{¹«ÓÐÓò˵Ã÷}

end;

var

AForm:TForm;

DataForm:TDataForm;

AForm :=DataForm; //׿ÏÈ :=ºó´ú £¬ÊǺϷ¨µÄ£º

procedure TForm1.Button1Click(Sender:TObject); //SenderÊÇTObjectÀàÐͼ´×î¶¥µÄ׿ÏÈ£¬ËùÒÔÈκζÔÏ󶼿ÉÒÔ¸³Öµ¸øËü¡£´Ë´¦ËäÈ»ÄúûÓп´¼û¸³ÖµµÄ³ÌÐò´úÂ룬µ«ÊÂʵÉÏ·¢ÉúʼþµÄ²¿¼þ»ò¿ØÖƲ¿¼þÒѾ­¸³¸øSenderÁË£¬Õâ¾ÍÊÇ˵SenderµÄÖµÊÇÏìÓ¦·¢ÉúʼþµÄ²¿¼þ»ò¿ØÖƲ¿¼þµÄ¡£¡¡

begin

end;

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State:TDragState;var Accept:Boolean);

begin

Accept :=Source is TLabel; //È·±£Ö»ÓбêÇ©¿ÉÒÔ±»ÍÏÒ·£¬AcceptÖ»ÓÐÔÚÓû§ÍÏÒ·Ò»¸ö±êǩʱ²ÅÎªÕæ£¬²¢×÷Ϊ±ä²ÎÊä³öµ½º¯ÊýÖ®Íâ¡£

end; ¡¡

procedure TForm1.Memo1DragDrop(Sender£¬Source:TObject;X,Y:Integer); //°ÑMemo×ÖÐ͸³Öµ³ÉºÍ·ÅÈëµÄ±êǩһÑùµÄ×ÖÐÍ

begin

Memo1.Font := (Source as TLabel).Font; //Ö»Óе±SourceÊÇÒ»¸ö±êǩʱ£¬Õâ¸öʼþ´¦Àí¹ý³Ì²ÅÔÊÐíÕâ¸ö¸³Öµ·¢Éú¡£

end;¡¡

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type

TBoogieNights = class //µÈЧÓÚTBoogieNights = Class(TObject)£¬ÒòΪËùÓеĶÔÏó¶¼ÊÇTObject¶ÔÏóµÄºó´ú

Dance:Boolean;

procedure DoTheHustle; //ÉùÃ÷·½·¨

end;

procedure TBoogieNights.DoTheHustle; //¶¨Òå·½·¨Ìåʱ±ØÐëÓÃÍêÕûµÄÃû×Ö¡£×¢Òâ¶ÔÏóµÄDanceÓòÄܱ»Ö±½Ó·ÃÎÊ£¬²»Ìᳫ¡£

bigin

Dance:=True;

end;

Var

BoogieNights :TBoogieNights;

BoogieNights := TBoogieNights.Create( ); //µ÷Óù¹ÔìÆ÷À´ÊµÀý»¯¶ÔÏó¡£±àÒëÆ÷½«¶Ô¶ÔÏóµÄÿһ¸öÓò½øÐгõʼ»¯£¬ËùÓÐÊý×Ö±»¸³ÖµÎª0£¬ËùÓÐÖ¸ÕëΪnil£¬ËùÓÐ×Ö·û´®Îª¿Õ¡£µÈЧÓÚ BoogieNights := TBoogieNights.Create;

BoogieNights.Free( ); //Îö¹¹/³·Ïú Free( ) = If not Nil then Destroy( ) £¬Ö±½Óµ÷ÓÃDestroy( )ÓÐΣÏÕ¡£Free·½·¨Ò²ÊÇ´ÓTObjectÖм̳йýÀ´µÄ¡£°Ñ×¢Ïú·ÅÔÚtry¡­finally³ÌÐòÄ£¿éµÄfinally²¿·Ö£¬¶ø°Ñ¶ÔÏóµÄ³ÌÐò´úÂë·ÅÔÚtry²¿·ÖÊDZà³ÌµÄºÃϰ¹ß¡£ÕâÑù£¬¼´Ê¹ÄúµÄ³ÌÐò´úÂëÔÚʹÓöÔÏóʱ·¢ÉúÁËÒ쳣ʼþ£¬Ò²»áÈ·±£ÄúΪÕâ¸ö¶ÔÏó·ÖÅäµÄÄÚ´æ»á±»ÊÍ·Å¡£

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Originally posted by zyj8119 at 2010-12-02 16:48:58:
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TFoo = class

procedure IAmAStatic;

procedure IAmAVirtual; virtual;

procedure IAmADynamic; dynamic;

procedure IAmAMessage(var M:Tmessage); message wm_SomeMessage;

end;

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TFooChild = class(TFoo)

procedure IAmAVirtual; override; //±àÒëÆ÷¾Í»áÓÃÐµķ½·¨¸²¸ÇÌæ»»VMTÖÐÔ­Ïȵķ½·¨£¬Ô­·½·¨ÈÔÔÚ

procedure IAmADynamic; override; //±àÒëÆ÷¾Í»áÓÃÐµķ½·¨¸²¸ÇÌæ»»DMTÖÐÔ­Ïȵķ½·¨£¬Ô­·½·¨ÈÔÔÚ

procedure IAmAVirtual; virtual; //µÈЧÓÚÖØÐÂÉùÃ÷£¬Ð½¨·½·¨£¬¶ø·Ç¸²¸Ç

procedure IAmADynamic; dynamic; //µÈЧÓÚÖØÐÂÉùÃ÷£¬Ð½¨·½·¨£¬¶ø·Ç¸²¸Ç

procedure IAmAStatic; override; //¶ÔÒ»¸ö¾²Ì¬·½·¨½øÐи²¸Ç£¬Ð·½·¨½«ÍêÈ«¸²¸ÇÌæ»»ÔÚ׿ÏÈÀàÖеÄͬÃû·½·¨£¬Ô­·½·¨²»ÔÙ´æÔÚÁË¡£

end;

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type

TFoo = class

procedure AMethod(I:Integer);overload;

procedure AMethod(S:String);overload;

procedure AMethod(Double);overload;

end;

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type

TSomeBase = class

procedure Cooper;

end;

TSomeClass = class

procedure Cooper;reintroduce;

end;

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begin

ClearSelection; //µÈЧÓÚEdit1.ClearSelection;

Text := 'Welcome to Delphi';

end;¡¡

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procedure TForm1.Button1Click(Sender:Tobject);

begin

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Procedure Foo(AnObject:TObject);

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(FOO as TEdit).Text:= 'Hello World.';

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If (Foo is TEdit) then

TEdit(Foo).Text:= 'Hello World.';

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