How to specify 3/4th of are for one content presenter? - wpf

Question

I am creating a new template for Tab control
in which I need to arrange items like attached image. The style given below is to have main tabs ..and contents... While mentioning the content (content presenter) I have to specify the grid column/row...So if I use row column/row as "0","0"..then all my contents will in the left top area...
Please tell me how do I specify a content presenter with 3/4 area of the grid.
<Style x:Key="OutlookTabControlStyle" TargetType="{x:Type TabControl}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TabControl}">
<Grid ClipToBounds="true" SnapsToDevicePixels="true"
KeyboardNavigation.TabNavigation="Local">
<Grid.RowDefinitions>
<RowDefinition x:Name="RowDefinition0" Height="Auto"/>
<RowDefinition x:Name="RowDefinition1" Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition x:Name="ColumnDefinition0"/>
<ColumnDefinition x:Name="ColumnDefinition1" Width="0"/>
</Grid.ColumnDefinitions>
<Grid x:Name="ContentPanel" Grid.Column="0" Grid.Row="1">
<ContentPresenter SnapsToDevicePixels=
"{TemplateBinding SnapsToDevicePixels}" Margin="2,2,2,2"
x:Name="PART_SelectedContentHost"
ContentSource="SelectedContent"/>
</Grid>
<StackPanel HorizontalAlignment="Stretch" Margin="0,-2,0,0"
x:Name="HeaderPanel" VerticalAlignment="Bottom" Width="Auto"
Height="Auto" Grid.Row="1" IsItemsHost="True"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground"
Value="{DynamicResource
{x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
My question is how do I allocate the remaining part (other than main tabs area) as content paresenter... I can see Canvas as one option. please help me if you know more about this.

Answer 1

Create a Grid with two Columns: one column with a width of * and one with a width of 3*. This will make make your 2nd column 3 times the size of the first column, or 3/4 of the total size
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="3*" />
</Grid.ColumnsDefinitions>
</Grid>
As an alternative you don't want to use a Grid, I usually use a MathConverter which allows me to adjust a bound value by a mathematical formula. The code for the MathConverter can be found here
<Grid Canvas.Left="{Binding ElementName=ParentPanel, Path=ActualWidth,
Converter={StaticResource MyMathConverter},
ConverterParameter=#VALUE*.75}" />