Categories: Technical Solution | Symbian C++ | S60 3rd Edition, Feature Pack 2 | UI

This page was last modified 11:19, 16 April 2008.

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Description

The Command Button Array (CBA) is located at the bottom of the screen in S60 devices (in portrait mode). The following code snippet demonstrates how to set an image for the left and right softkeys.

#include <eikbtgpc.h>
#include <eikcba.h>     // link against avkon.lib, eikcoctl.lib
 
void SetCbaImage( CEikButtonGroupContainer* aBtGrC, 
             CEikImage& aImage, 
             TBool aLSK )
{
   TInt cmdPos = aLSK ? 0 : 2;
   TInt cmdId = aBtGrC->ButtonGroup()->CommandId( cmdPos );
   CEikCbaButton* button = 
     (CEikCbaButton*)aBtGrC->ControlOrNull( cmdId );
   if( button )
     {
     button->SetImage(aImage);
     aBtGrC->SetRect( aBtGrC->Rect() );
     aBtGrC->DrawNow();
     }
}

Using SetCbaImage():

_LIT(KCBAImageMBMFilename, "c:\\data\\images\\testimage.mbm");
TFileName mbmFile(KCBAImageMBMFilename);
 
cba = CEikButtonGroupContainer::Current();
if(cba)
{
   image = new (ELeave) CEikImage;
   CleanupStack::PushL( image );
   image->CreatePictureFromFileL( mbmFile, EMbmEnumLSKImage );
   image->SetBrushStyle(CGraphicsContext::ESolidBrush);
   CleanupStack::Pop( image ); 
 
   // Set image for LSK (ETrue as 3rd parameter)
   // Transfers ownership of image - do not delete yourself
   SetCbaImage( cba, *image, ETrue );
   image->DrawNow();
}