Note: The required header, uikoninternalpskeys.h, is not available in the Symbian^3 SDK.

Description

This solution enables you to change the display mode and trigger the orientation change to all open apps.

Solution

Here is the code snippet for rotating orientation. KPSUidUikon is part of uikon_status_api.

CWsScreenDevice* dev = CEikonEnv::Static()->ScreenDevice();
 // Orientation to landscape
 TInt err = RProperty::Set( KPSUidUikon, KUikLayoutState, 1 );
 if ( err == KErrNone )
     {
     dev->SetScreenMode( 0 );
     }

// Orientation to portrait
 TInt err = RProperty::Set( KPSUidUikon, KUikLayoutState, 0 );
 if ( err == KErrNone )
     {
     dev->SetScreenMode( 0 );
     }

For Symbian^3, KUikPreferredOrientation will be used to get the corresponding rotation of the device.

TInt orientation;
 TInt err = RProperty::Get( KPSUidUikon, KUikPreferredOrientation, orientation );
 User::LeaveIfError( err );