Minimal: -A Minimal UI Application

Download

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

Click: browse to view the example code.

Description

This example demonstrates a minimal -UI application without the use of resource files. It implements the standard -classes required by the UI framework of any application; application, document, -application UI and view, all of which are implemented minimally.

Application class

The application class implements -the following required functions:

CApaApplication::CreateDocumentL()
CApaApplication::AppDllUid()

Because the application does not use a resource file, it also needs -to override CEikApplication::ResourceFileName(), to return -an empty resource filename.

Document class

The document class must implement CEikDocument::CreateAppUiL().

Application UI class

The app UI class implements -the following required functions:

A ConstructL(). -This must call CEikAppUi::BaseConstructL(). The ENoAppResourceFile flag -is used to indicate that it has no resource file, and ENoScreenFurniture indicates -that it does not require any resource independent 'screen furniture', for -example status bars. ConstructL() is also used to create -any views owned by the app UI.
A destructor, to delete -the view.
A HandleCommandL() This -app UI only handles a single command, to exit the application.

View class

Views are controls, derived from CCoeControl. -Their main purpose is to display the application's data and to handle input. -This view overrides CCoeControl::Draw(), to display a message -in the centre of the screen rectangle. It does not handle any key or pen input.

Class Summary

CEikApplication

CEikDocument

CEikAppUi

CCoeControl

Build

The Symbian -build process describes how to build an application.

The Minimal example -builds an executable called Minimal.exe in the standard -location (\epoc32\release\winscw\ <build_variant> for -CodeWarrior). Either launch the executable itself, or launch the emulator -and then select the Minimal application from the Emulator's -extras bar.

+ + + + + +Minimal: +A Minimal UI Application +

Download

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

Click: browse to view the example code.

Description

This example demonstrates a minimal +UI application without the use of resource files. It implements the standard +classes required by the UI framework of any application; application, document, +application UI and view, all of which are implemented minimally.

Application class

The application class implements +the following required functions:

CApaApplication::CreateDocumentL()
CApaApplication::AppDllUid()

Because the application does not use a resource file, it also needs +to override CEikApplication::ResourceFileName(), to return +an empty resource filename.

Document class

The document class must implement CEikDocument::CreateAppUiL().

Application UI class

The app UI class implements +the following required functions:

A ConstructL(). +This must call CEikAppUi::BaseConstructL(). The ENoAppResourceFile flag +is used to indicate that it has no resource file, and ENoScreenFurniture indicates +that it does not require any resource independent 'screen furniture', for +example status bars. ConstructL() is also used to create +any views owned by the app UI.
A destructor, to delete +the view.
A HandleCommandL() This +app UI only handles a single command, to exit the application.

View class

Views are controls, derived from CCoeControl. +Their main purpose is to display the application's data and to handle input. +This view overrides CCoeControl::Draw(), to display a message +in the centre of the screen rectangle. It does not handle any key or pen input.

Class Summary

CEikApplication

CEikDocument

CEikAppUi

CCoeControl

Build

The Symbian +build process describes how to build an application.

The Minimal example +builds an executable called Minimal.exe in the standard +location (\epoc32\release\winscw\ <build_variant> for +CodeWarrior). Either launch the executable itself, or launch the emulator +and then select the Minimal application from the Emulator's +extras bar.

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