diff -r 51a74ef9ed63 -r ae94777fff8f Symbian3/SDK/Source/GUID-E63545EC-172E-53F3-B0B3-EA5150FD92D8.dita --- a/Symbian3/SDK/Source/GUID-E63545EC-172E-53F3-B0B3-EA5150FD92D8.dita Wed Mar 31 11:11:55 2010 +0100 +++ b/Symbian3/SDK/Source/GUID-E63545EC-172E-53F3-B0B3-EA5150FD92D8.dita Fri Jun 11 12:39:03 2010 +0100 @@ -1,102 +1,104 @@ - - - - - -Asynchronous -Services Example CodesExplains how to use asynchronous requests. - -
SingleRequest: -asynchronous programming without active objects

Download

Click -on the following link to download the example: SingleRequest.zip

Click on the following link -to download additional file: CommonFramework.zip

Click browse SingleRequest to view the example code.

Click browse CommonFramework to view the additional file.

Click -on the below link for S60 Example which demonstrates Asynchronous requests ClientServerAsync .zip .

Browse the S60 files. ClientServerAsync .

Description

This -example shows how to issue and wait for a single request.

The example -shows the general principles involved in asynchronous programming. It uses -a simple wait loop and shows how the completion of asynchronous events are -handled without active objects.

This example does not use active -objects deliberately.

Class summary

TRequestStatus

Security -issues

The example requires no specific capabilities in order -to run - and does not demonstrate any security issues.

-
WaitLoop: asynchronous -programming without active objects

Download

Click -on the following link to download the example: Waitloop.zip

Click on the following link to -download additional file: CommonFramework.zip

Click browse Waitloop to view the example code.

Click browse CommonFramework to view the additional file.

Description

This -example shows how a wait loop can be used to identify and handle a completed -request.

It shows the general principles involved in asynchronous -programming. It uses a simple wait loop and shows how the completion of asynchronous -events are handled without active objects.

This example does -not use active objects deliberately.

Class summary

TRequestStatus

Security -issues

The example requires no specific capabilities in order -to run - and does not demonstrate any security issues.

-
RealLifeWaitLoop: -asynchronous programming without active objects

Download

Click -on the following link to download the example: RealLifeWaitLoop.zip

Click on the following -link to download additional files: CommonFramework.zip

Click browse RealLifeWaitLoop to view example code.

Click browse CommonFramework to view the additional file.

Description

As -with the WaitLoop example, -this example shows how a wait loop can be used to identify and handle a completed -request. However, this example shows how the wait loop can deal with multiple -asynchronous service providers.

The example shows the general principles -involved in asynchronous programming; it uses a simple wait loop and shows -how the completion of asynchronous events are handled without active -objects.

This example deliberately does not use active objects.

Class -summary

TRequestStatus

Security issues

The -example requires no specific capabilities in order to run - and does not demonstrate -any security issues.

-
RunComplete: -asynchronous programming with active objects

Download

Click -on the following link to download the example: RunComplete.zip

Click on the following link -to download additional files: CommonFramework.zip

Click browse RunComplete to view the example code.

Click browse CommonFramework to view the additional file.

Description

The -example shows how active objects and an active scheduler can be used to handle -asynchronous events. Compare this with the following examples; SingleRequest, WaitLoop and RealLifeWaitLoop.

It -demonstrates a single CMessageTimer active object which runs -until completion.

Class summary

TRequestStatus CActiveScheduler CActive CTimer

Security issues

The example -requires no specific capabilities in order to run - and does not demonstrate -any security issues.

-
AcceptInput1-2: -asynchronous programming with active objects

Download

Click -on the following links to download the examples:

AcceptInput1.zip

AcceptInput2.zip

Click on the following link -to download additional files: CommonFramework.zip

Click on the following -links to view the examples:

browse AcceptInput1

browse AcceptInput2

Click browse CommonFramework to view the additional file.

Description

These -examples show how active objects and an active scheduler can be used to handle -asynchronous events.

They demonstrate a single CKeyMessengerProcessor active -object (derived from class CActiveConsole), which accepts -input from keyboard, but does not print it. This object contains a CMessageTimer object -which it activates if the user inputs the character "m" and cancelled if the -user inputs "c".

Class summary

TRequestStatus CActiveScheduler CActive CTimer

Security issues

The example -requires no specific capabilities in order to run - and does not demonstrate -any security issues.

-
AcceptPrintInput: -asynchronous programming with active objects

Download

Click -on the following link to download the example: AcceptPrintInput.zip

Click on the following -link to download additional files: CommonFramework.zip

View the source code browse AcceptPrintInput. View the additional file: browse CommonFramework.

Description

This -example demonstrates how to accept and print keyboard input to a console using -active objects.

The example implements a class called CWriteKeyProcessor which -is an active object that requests and handles keyboard input in its ProcessKeyPress() method. -An alphabetic or space character is printed as a character, anything else -is printed as an integer. Pressing the escape key terminates the application.

Class -summary

CActiveScheduler CActive CTimer

Security -issues

The example requires no specific capabilities in order -to run - and does not demonstrate any security issues.

-
Fibonacci1-3: -asynchronous programming with active objects

Download

Click -on the following links to download the examples: Fibonacii1.zip

Fibonacii2.zip

Fibonacii3.zip

Click browse Fibonacii1

browse Fibonacii2

browse Fibonacii3

Description

These -examples show how active objects and an active scheduler can be used to handle -asynchronous events and long-running services to maintain system responsiveness.

Class -summary

TRequestStatus CActiveScheduler CActive CTimer

Security issues

The example requires no specific capabilities -in order to run - and does not demonstrate any security issues.

+ + + + + +Asynchronous +Services Example CodesExplains how to use asynchronous requests. +
    +

  • SingleRequest: asynchronous programming without active objects

    • +

  • WaitLoop: asynchronous programming without active objects

    • +

  • RealLifeWaitLoop: asynchronous programming without active objects

    • +

  • RunComplete: asynchronous programming with active objects

    • +

  • AcceptInput1-2: asynchronous programming with active objects

    • +

  • AcceptPrintInput: asynchronous programming with active objects

    • +

  • Fibonacci1-3: asynchronous programming with active objects.

    • +
+
SingleRequest: +asynchronous programming without active objects

Download

Click +on the following link to download the example: SingleRequest.zip

Click on the following link +to download additional file: CommonFramework.zip

Click browse SingleRequest to view the example code.

Click browse CommonFramework to view the additional file.

Click +on the below link for Example which demonstrates Asynchronous requests ClientServerAsync .zip .

Browse +the S60 files. ClientServerAsync .

Description

This +example shows how to issue and wait for a single request.

The example +shows the general principles involved in asynchronous programming. It uses +a simple wait loop and shows how the completion of asynchronous events are +handled without active objects.

This example does not use active +objects deliberately.

Class summary

TRequestStatus

Security +issues

The example requires no specific capabilities in order +to run - and does not demonstrate any security issues.

+
WaitLoop: asynchronous +programming without active objects

Download

Click +on the following link to download the example: Waitloop.zip

Click on the following link to +download additional file: CommonFramework.zip

Click browse Waitloop to view the example code.

Click browse CommonFramework to view the additional file.

Description

This +example shows how a wait loop can be used to identify and handle a completed +request.

It shows the general principles involved in asynchronous +programming. It uses a simple wait loop and shows how the completion of asynchronous +events are handled without active objects.

This example does +not use active objects deliberately.

Class summary

TRequestStatus

Security +issues

The example requires no specific capabilities in order +to run - and does not demonstrate any security issues.

+
RealLifeWaitLoop: +asynchronous programming without active objects

Download

Click +on the following link to download the example: RealLifeWaitLoop.zip

Click on the following +link to download additional files: CommonFramework.zip

Click browse RealLifeWaitLoop to view example code.

Click browse CommonFramework to view the additional file.

Description

As +with the WaitLoop example, +this example shows how a wait loop can be used to identify and handle a completed +request. However, this example shows how the wait loop can deal with multiple +asynchronous service providers.

The example shows the general principles +involved in asynchronous programming; it uses a simple wait loop and shows +how the completion of asynchronous events are handled without active +objects.

This example deliberately does not use active objects.

Class +summary

TRequestStatus

Security issues

The +example requires no specific capabilities in order to run - and does not demonstrate +any security issues.

+
RunComplete: +asynchronous programming with active objects

Download

Click +on the following link to download the example: RunComplete.zip

Click on the following link +to download additional files: CommonFramework.zip

Click browse RunComplete to view the example code.

Click browse CommonFramework to view the additional file.

Description

The +example shows how active objects and an active scheduler can be used to handle +asynchronous events. Compare this with the following examples; SingleRequest, WaitLoop and RealLifeWaitLoop.

It +demonstrates a single CMessageTimer active object which runs +until completion.

Class summary

TRequestStatus CActiveScheduler CActive CTimer

Security issues

The example +requires no specific capabilities in order to run - and does not demonstrate +any security issues.

+
AcceptInput1-2: +asynchronous programming with active objects

Download

Click +on the following links to download the examples:

AcceptInput1.zip

AcceptInput2.zip

Click on the following link +to download additional files: CommonFramework.zip

Click on the following +links to view the examples:

browse AcceptInput1

browse AcceptInput2

Click browse CommonFramework to view the additional file.

Description

These +examples show how active objects and an active scheduler can be used to handle +asynchronous events.

They demonstrate a single CKeyMessengerProcessor active +object (derived from class CActiveConsole), which accepts +input from keyboard, but does not print it. This object contains a CMessageTimer object +which it activates if the user inputs the character "m" and cancelled if the +user inputs "c".

Class summary

TRequestStatus CActiveScheduler CActive CTimer

Security issues

The example +requires no specific capabilities in order to run - and does not demonstrate +any security issues.

+
AcceptPrintInput: +asynchronous programming with active objects

Download

Click +on the following link to download the example: AcceptPrintInput.zip

Click on the following +link to download additional files: CommonFramework.zip

View the source code browse AcceptPrintInput. View the additional file: browse CommonFramework.

Description

This +example demonstrates how to accept and print keyboard input to a console using +active objects.

The example implements a class called CWriteKeyProcessor which +is an active object that requests and handles keyboard input in its ProcessKeyPress() method. +An alphabetic or space character is printed as a character, anything else +is printed as an integer. Pressing the escape key terminates the application.

Class +summary

CActiveScheduler CActive CTimer

Security +issues

The example requires no specific capabilities in order +to run - and does not demonstrate any security issues.

+
Fibonacci1-3: +asynchronous programming with active objects

Download

Click +on the following links to download the examples: Fibonacii1.zip

Fibonacii2.zip

Fibonacii3.zip

Click browse Fibonacii1

browse Fibonacii2

browse Fibonacii3

Description

These +examples show how active objects and an active scheduler can be used to handle +asynchronous events and long-running services to maintain system responsiveness.

An +alternative solution, not using a timer, is described on The Long Running Active Object wiki page.

Class +summary

TRequestStatus CActiveScheduler CActive CTimer

Security issues

The example requires no specific capabilities +in order to run - and does not demonstrate any security issues.

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