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ID	TSS001178	Creation date	November 26, 2008
Platform	S60 3rd Edition S60 3rd Edition, Feature Pack 1 S60 3rd Edition, Feature Pack 2	Devices	All (S60 3rd Edition)
Category	Symbian C++	Subcategory	UI, UI Components

Keywords (APIs, classes, methods, functions): KEikDynamicLayoutVariantSwitch

Description

Support for changing the application orientation between portrait and landscape modes can be added by implementing the HandleResourceChangeL() function in the App UI class and reacting to events of type KEikDynamicLayoutVariantSwitch.

Switching between display modes can cause visible UI problems in dialog-based applications (applications using a CEikDialog or CAknDialog-derived class as their main UI) if the dialog is not made aware of the change.

Solution

When receiving this type of event in a dialog-based application or when any custom dialog is being displayed, that event should also be forwarded to the active dialog to ensure that it has the correct layout also after the orientation switch:

void CMyDialogBasedAppUi::HandleResourceChangeL( TInt aType )
    {
    // First call base class implementation
    CAknAppUi::HandleResourceChangeL( aType );
 
    if ( aType == KEikDynamicLayoutVariantSwitch )
      {
      if ( iDialog )
        {
        TRect rect;
        AknLayoutUtils::LayoutMetricsRect( AknLayoutUtils::EMainPane, rect );
        iDialog->SetRect( rect );
        '''iDialog->HandleResourceChange( aType );'''
        }
      }
    }