Delphi 之运算符重载
Delphi 7之后的版本，增加了运算符的重载。虽然不尽人意（需要写特定英文），但有总比没有强。
例：
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
T3DPoint = record
X, Y, Z: Double;
class operator ADD(ALeftPoint, ARightPoint: T3DPoint): T3DPoint; {重载'+'运算符}
end;
TForm1 = class(TForm)
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
{ T3DPoint }
class operator T3DPoint.ADD(ALeftPoint, ARightPoint: T3DPoint): T3DPoint;
begin
Result.X := ALeftPoint.X + ARightPoint.X;
Result.Y := ALeftPoint.Y + ARightPoint.Y;
Result.Z := ALeftPoint.Z + ARightPoint.Z;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
A, B, Z: T3DPoint;
begin
A.X := 1; A.Y := 1; A.Z := 1;
B.X := 3; B.Y := 3; B.Z := 3;
Z := A + B;
ShowMessageFmt('%f, %f, %f', [Z.X, Z.Y, Z.Z]); {4.00, 4.00, 4.00}
//ShowMessage(FloatToStr(Z.X) + ',' + FloatToStr(Z.Y) + ',' + FloatToStr(Z.Z)); {4, 4, 4}
end;
end.
下面附上所有的运算符:
重载特定英文 行为（或目数） 方法 &nbs
相关文档：
//采用递归方法，D7编译调试通过。
//数据采用ADOQuery读取，并将数据暂存在一个动态数组中，树形列表控件为TreeView。
procedure TForm1.LoadTreeInfo;
type
TInfo = record
ID, //代码
Name, //名称
&nb ......
type
TCharStack = class(TStack)
private
function GetTop: Char;
public
function Pop: Char;
function Push(Item: Char): Char;
property Top: Char read GetTop;
end;
const
FindSet = ['(',')'];
implementation
{$R *.dfm}
{ TCharStack }
......
dll 调用方法有 静态调用和动态调用两种方法
用到的dll为上篇文章所编写的dll.
总结如下：
Unit Unit1;
Interface
Uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
Type
TForm1 = Class(TForm)
Button1: TButton; ......
---
Delphi in a Unicode World Part I: What is Unicode, Why do you need
it, and How do you work with it in Delphi?
By: Nick
Hodges
原文链接：http://dn.codegear.com/article/38437
Abstract: This article discusses Unicode, how Delphi developers
can benefit from using Unicode, and ho ......
此文是根据伴水老大的实例做的小修改！
以下是个人见解，如有错误请指正:)
要想跨进程访问DBGRID，貌似只能用HOOK，写一个DLL想办法注入到目标进程。注入成功后，使DLL与目标进程在同一进程空间中(其内有一些细节问题，请参见代码)，这时可以访问目标进程的VCL组件。并把VCL组件的数据通� ......
