Categories: Symbian C++ | Base/System | Code Examples | S60

This page was last modified 08:51, 28 February 2008.

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Overview

This code snippet demonstrates how to use an ECom component.

Preconditions and important issues

• An application that loads an ECom component must call REComSession::FinalClose() in its destructor. It signals the destruction of the interface implementation to ECom.

MMP file

...
 
USERINCLUDE   .
SYSTEMINCLUDE \Epoc32\include
SYSTEMINCLUDE \Epoc32\include\ecom
 
...
 
LIBRARY       ecom.lib

Source file

TBuf<50> string;
 
// Create the ECom implementation
CHelloEcomIF* ecom = CHelloEcomIF::NewL();
CleanupStack::PushL(ecom);
 
// Call ECom
ecom->SayHello(string);
 
// Delete ECom
CleanupStack::PopAndDestroy(ecom);
 
// Close ECom
REComSession::FinalClose();

PKG file

...
 
; The ECom component
"Epoc32\release\gcce\urel\EComExample.dll"
        - "!:\sys\bin\EComExample.dll"
"Epoc32\data\z\resource\plugins\EComExample.rsc"
        - "!:\resource\plugins\EComExample.rsc"

Postconditions

The application loads the existing ECom component and calls its interface.

See also

• Image:ECom.zip: Working example code
• CS0000835 - ECom: Implementing interface
• CS000836 - ECom: Defining a custom interface
• ECOM in Forum Nokia Wiki
• S60 Platform: ECom Plug-in Architecture
• S60 Platform: ECom Plug-in Examples