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Archived:Accessing data anywhere in application

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{{Archived|timestamp=20120313112701|user=roy.debjit| }}
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[[Category:Symbian]][[Category:S60 3rd Edition (initial release)]][[Category:Symbian C++]]
 
In many situations, it is useful to have a method or a way to place data somewhere that could be accessed globally in the application. One of those ways is placing the global data in the Document class.  
 
In many situations, it is useful to have a method or a way to place data somewhere that could be accessed globally in the application. One of those ways is placing the global data in the Document class.  
  
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Latest revision as of 09:34, 15 June 2012

Archived.pngArchived: This article is archived because it is not considered relevant for third-party developers creating commercial solutions today. If you think this article is still relevant, let us know by adding the template {{ReviewForRemovalFromArchive|user=~~~~|write your reason here}}.

Article Metadata
CompatibilityArticle
Created: vdharankar (25 Jul 2009)
Last edited: hamishwillee (15 Jun 2012)

In many situations, it is useful to have a method or a way to place data somewhere that could be accessed globally in the application. One of those ways is placing the global data in the Document class.

The Document class is the most appropriate place to keep the data which needs to be accessed from the whole application, according to the Document/View architecture. A global reference to the Document class instance if accessible through the AppUi's method Document(). This method has the following signature:

CEikDocument *Document() const;

This means that we should perform a cast on the result value to match our actual Document class, defined in the application. Now, here's how to access your Document instance:

#include <eikappui.h>
 
// suppose your Document class is named as 'MyDocument'
 
MyDocument* doc = static_cast <MyDocument*> (CEikonEnv::Static()->EikAppUi()->Document() );
 
// now access your data
doc->myData = ... ;
This page was last modified on 15 June 2012, at 09:34.
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