MASTERING DELPHI 6 phần 4 docx

... color bitmap for a 300 40 0 image at 2 56 colors requires about 120 KB. By increasing the color count or the number of pixels, you can easily have full-screen bitmaps of about 1 MB and reach 4 MB of memory ... for a 1280×10 24 resolution at 16 million colors. If storing the bitmap was the default choice, running half a dozen simple applications would require at least 8 MB of memory, if n...

Ngày tải lên: 12/08/2014, 21:20

... expression that is under the mouse cursor. Chapter 1 • The Delphi 6 IDE Copyright ©2001 SYBEX, Inc., Alameda, CA www.sybex.com MASTERING ™ DELPHI ™ 6 Marco Cantù San Francisco • Paris • Düsseldorf • ... of the DFM file. Delphi 5 used design-time information (DTI) files, which had a structure similar to INI files. Delphi 6 can still read the older .DTI format, but uses the new...

Ngày tải lên: 12/08/2014, 21:20

... 1.95583; ESPPerEuros = 166 .3 86; FRFPerEuros = 6. 55957; IEPPerEuros = 0.787 5 64 ; ITLPerEuros = 19 36. 27; // and so on Converting Data Copyright ©2001 SYBEX, Inc., Alameda, CA www.sybex.com 140 The units must ... see an example of the output of this program at run time in Figure 4. 4. FIGURE 4. 4: The output of the IfSender example Chapter 4 • The Run-Time Library Copyright ©2001...

Ngày tải lên: 12/08/2014, 21:20

... at run time in Figure 6. 4, while typing some text inside a cell of the table. TIP I originally built this example with Kylix on Linux. To port it to Windows and Delphi 6, all I had to do was ... action lists, and the new Delphi 6 Action Manager, to end up discussing technical details of forms. All of these topics will be covered in the next three chapters. FIGURE 6. 15: The StylesD...

Ngày tải lên: 12/08/2014, 21:20

... of changes from Delphi 5 to Delphi 6, although they are substantial. For more information, you can study the extensive source code in the \Source\ToolsApi directory of Delphi 6. Chapter 11 • ... TMdClock.SetActive (Value: Boolean); begin FTimer.Enabled := Value; end; Publishing Subcomponents in Delphi 6 With Delphi 6 we can simply expose the entire subcomponent, the timer, in...

Ngày tải lên: 12/08/2014, 21:20

... TField class) play a Chapter 13 • Delphi s Database Architecture Copyright ©2001 SYBEX, Inc., Alameda, CA www.sybex.com 5 46 Values.Strings = ( ‘1’ ‘2’ ‘3’ 4 ) end A slightly different component ... from a good idea. For this reason, Delphi implements the idea of data module, a container of nonvisual components I already introduced in Chapter 1, “The Delphi 6 IDE.” At design time, a...

Ngày tải lên: 12/08/2014, 21:20

... is, indeed, how Delphi programmers used ADO before the release of Delphi 5. However, Chapter 16 • ActiveX Data Objects Copyright ©2001 SYBEX, Inc., Alameda, CA www.sybex.com 66 6 TIP Triggers fire ... CA www.sybex.com 65 4 you need is a ClientDataSet component hooked to a file and with a few fields defined (in the FieldDefs property): object ClientDataSet1: TClientDataSet FileName =...

Ngày tải lên: 12/08/2014, 21:20

... 768 What’s Next? Borland originally introduced its multitier technology in Delphi 3 and has kept extending it from version to version. ... version to version. In addition to further updates and the change of the MIDAS name to DataSnap, Delphi 6 sees the introduction of XML and SOAP support, introducing an alternate and extended architecture ... background Chapter 18 • Writing Database...

Ngày tải lên: 12/08/2014, 21:20

... by Delphi. Here is a small excerpt of the IAXForm1 interface from the XF1Lib.pas file, with some comments I’ve added: type IAXForm1 = interface(IDispatch) [‘{5 166 1AA1-9 46 8 -11D0-98D0 -44 4553 540 000}’] // ... built around the following interface: type IListServer = interface (IDispatch) [‘{323C4A 84- E400-11D1-B9F1-0 048 4 540 0FAA}’] function Get_Items: IStrings; safecall; procedure Se...

Ngày tải lên: 12/08/2014, 21:20

... encodings include various Unicode character sets (such as UTF-8, UTF- 16, and UTF-32) or some ISO encodings (such as ISO-1 0 64 6-xxx or ISO-8859-xxx). The prologue can also include external declarations, ... reg- istering the application as an OLE automation server, as: const CLASS_ComWebApp: TGUID = ‘{33A4D4F0-E082 -47 23-9 165 -5D8F95AF1577}’; initialization TWebAppAutoObjectFactory.Create...

Ngày tải lên: 12/08/2014, 21:20