2009年5月28日 星期四

Universal Real-Time Software Oscilloscope Component

CodeGear| CodeGear-CodeCentral Delphi |23:16:58

Real-time universal oscilloscope GUI ( graphical user interface ) DLL library for data acquisition, simulation, debugging.Advantages:1.Speedy performance: the library makes it possible to bring out into the beams of the viewing oscilloscope over a...

学习 SQL 语句 - Insert、Update、Delete

万一| 万一的 Delphi 博客 |23:10:00

unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, ExtCtrls, Grids, DBGrids, DB, ADODB; type TForm1 = class(TForm) DBGrid1: TDBGrid; DataSource1: TDataSource; ...

惭愧， 才开始学数据库

万一| 万一的 Delphi 博客 |21:36:00

博客上随手记下的东西不少了, 没有任何自己的发明创造, 都是在学习.这个博客最早没想要帮助谁, 只想帮助自己; 后来有不少朋友来捧场, 说也有所获, 这让我很欣慰, 后来常常以助人为乐.学习 Delphi 是带着目的的, 但目的不是数据库, 所以博客上基本没有数据库相关的内?..

学习 SQL 语句 - Select(9): 其他

万一| 万一的 Delphi 博客 |18:42:00

//只要前五条记录 procedure TForm1.Button1Click(Sender: TObject); begin with ADODataSet1 do begin Close; CommandText := 'SELECT TOP 5 * FROM country'; Open; end; end; //去除重复 procedure TForm1.Button2Click(Sender: TObject); begin...

学习 SQL 语句 - Select(8): 分组条件

万一| 万一的 Delphi 博客 |17:54:00

代码文件://分组条件可以是 Where procedure TForm1.Button1Click(Sender: TObject); begin with ADODataSet1 do begin Close; CommandText := 'SELECT Continent, AVG(Area) AS 平均面积 ' + 'FROM country WHERE Continent="South Am...

学习 SQL 语句 - Select(7): 分组统计之 Avg()、Sum()、Max()、Min()、Count()

万一| 万一的 Delphi 博客 |16:43:00

Group By本来 Group By 也可以根据多个字段分组("," 隔开), 但这个例子只有 Continent 字段适合分组,也只有 Area、Population 字段适合统计.本例效果图:代码文件:unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Control...

Update 3 and 4 for Delphi 2009， C++Builder 2009 and RAD Studio 2009

CodeGear| CodeGear-CDN Delphi |12:01:33

BusinessSkinForm v. 7.40

CodeGear| CodeGear-CodeCentral Delphi |06:49:49

BusinessSkinForm VCL library help you to create applications with skins support for forms, menus, hints, many standard and DB controls. You can create your skins with special editor. Develop your business applications with BusinessSkinForm VCL!Fea...

DynamicSkinForm v. 10.40

CodeGear| CodeGear-CodeCentral Delphi |06:37:27

DynamicSkinForm VCL library help you to create applications with skins. Skins support for forms, menus, hints, many standard and non-standard original controls. Skins with many objects, effects help you to create standard and non-standard cool ap...

Use a Function or a Procedure as a Parameter for Another Delphi Function

About.com| About.com Delphi Programming |02:00:00

Delphi TIPS :: In Delphi, procedural types allow you to treat procedures and functions as values that can be assigned to variables or passed to other procedures and functions. Read the...