May 2004
Intermediate to advanced
888 pages
22h 31m
English
Content preview from Delphi for .NET Developer’s Guide
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Asynchronous Stream Access
In some applications, it is useful to enable the user to continue working with the application while some processing is happening in the background. Chapter 14, “Threading in Delphi for .NET,” covers Threads in detail and how parallel processing is accomplished. Based on the treading model, streams provide the ability to allow asynchronous access to the underlying stream. Listing 12.8 illustrates this technique for reading a FileStream asynchronously.
Listing 12.8. Asynchronous File Access
1: unit WinForm; 2: 3: interface 4: 5: uses 6: System.Drawing, System.Collections, System.ComponentModel, 7: System.Windows.Forms, System.Data, System.IO, System.Threading; 8: 9: type 10: 11: TWinForm = class(System.Windows.Forms.Form) ... |
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