int mxExpressionTray::CountSelected( void )
{
	CExpClass *active = expressions->GetActiveClass();
	if ( !active )
		return 0;

	int c = 0;
	for ( int i = 0; i < active->GetNumExpressions(); i++ )
	{
		CExpression *exp = active->GetExpression( i );
		if ( !exp )
			continue;

		if ( exp->GetSelected() )
		{
			c++;
		}
	}

	return c;
}