	<Grid>
		<Grid.ColumnDefinitions>
			<ColumnDefinition Width="*"/>
			<ColumnDefinition Width="Auto"/>
			<ColumnDefinition Width="*"/>
		</Grid.ColumnDefinitions>
		<Grid.RowDefinitions>
			<RowDefinition Height="*"/>
			<RowDefinition Height="Auto"/>
			<RowDefinition Height="*"/>
		</Grid.RowDefinitions>
		
		<GridSplitter Grid.Column="1" Grid.Row="0" Width="3"　VerticalAlignment="Stretch"/>
		<GridSplitter Grid.Column="0" Grid.Row="1" Grid.ColumnSpan="3" Height="3"　HorizontalAlignment="Stretch"/>
		
		<Button Grid.Column="0" Grid.Row="0"/>
		<Button Grid.Column="3" Grid.Row="0"/>
		<Button Grid.Column="0" Grid.Row="3" Grid.ColumnSpan="3"/>
	</Grid>
