hide the default resize grip in wpf - wpf

Question

I have a borderless and transparent window in WPF, with some fancy decoration at the bottom. There's a custom footer with some non conventional curves and what not showing the company logo. This window needs to be resizable with a grip in the bottom right corner like conventional windows.
Anyways, I have put my own ResizeGrip in a place that is actually on the footer, however the default grip still shows up and it's floating in space due to the invisible window.
How do I hide the default ResizeGrip?

Answer 1

The appearance of a resize grip is controlled via the ResizeMode dependency property on the Window.
If this is set to CanResizeWithGrip:
<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="50" Width="150"
WindowStyle="None" AllowsTransparency="True" Background="#19FFFFFF"
ResizeMode="CanResizeWithGrip">
<Grid></Grid>
</Window>
The Window will look like this:
If it is set to CanResize (the default):
<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="50" Width="150"
WindowStyle="None" AllowsTransparency="True" Background="#19FFFFFF"
ResizeMode="CanResize">
<Grid></Grid>
</Window>
The Window will look as follows:

Answer 2

So to hide the default grip, I overwrote the default ResizeGrip style such that it's visibility is hidden. Easy with the help of Expression Blend 2.
<Style TargetType="{x:Type ResizeGrip}">
<Setter Property="MinWidth" Value="{DynamicResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}"/>
<Setter Property="MinHeight" Value="{DynamicResource {x:Static SystemParameters.HorizontalScrollBarHeightKey}}"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ResizeGrip}">
<Grid SnapsToDevicePixels="True" Background="{TemplateBinding Background}">
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="Visibility" Value="Hidden"/>
</Style>
Then I set up my own ResizeGrip on my custom window decoration with a style that is identical to the default grip style.
<SolidColorBrush x:Key="ResizeGripperForeground" Color="#B8B4A2"/>
<Style x:Key="VisibleResizeGrip" TargetType="{x:Type ResizeGrip}">
<Setter Property="MinWidth" Value="{DynamicResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}"/>
<Setter Property="MinHeight" Value="{DynamicResource {x:Static SystemParameters.HorizontalScrollBarHeightKey}}"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ResizeGrip}">
<Grid SnapsToDevicePixels="True" Background="{TemplateBinding Background}">
<Path Fill="White" HorizontalAlignment="Right" Margin="0,0,2,2" VerticalAlignment="Bottom" Data="M 8,0 L 10,0 L 10,2 L 8,2 Z M 4,4 L 6,4 L 6,6 L 4,6 Z M 8,4 L 10,4 L 10,6 L 8,6 Z M 0,8 L 2,8 L 2,10 L 0,10 Z M 4,8 L 6,8 L 6,10 L 4,10 Z M 8,8 L 10,8 L 10,10 L 8,10 Z"/>
<Path Fill="{StaticResource ResizeGripperForeground}" HorizontalAlignment="Right" Margin="0,0,3,3" VerticalAlignment="Bottom" Data="M 8,0 L 10,0 L 10,2 L 8,2 Z M 4,4 L 6,4 L 6,6 L 4,6 Z M 8,4 L 10,4 L 10,6 L 8,6 Z M 0,8 L 2,8 L 2,10 L 0,10 Z M 4,8 L 6,8 L 6,10 L 4,10 Z M 8,8 L 10,8 L 10,10 L 8,10 Z"/>
<Path Data="M8,0L10,0 10,2 8,2z M4,4L6,4 6,6 4,6z M8,4L10,4 10,6 8,6z M0,8L2,8 2,10 0,10z M4,8L6,8 6,10 4,10z M8,8L10,8 10,10 8,10z" Fill="White" HorizontalAlignment="Right" Margin="0,0,2,2" VerticalAlignment="Bottom" />
<Path Data="M8,0L10,0 10,2 8,2z M4,4L6,4 6,6 4,6z M8,4L10,4 10,6 8,6z M0,8L2,8 2,10 0,10z M4,8L6,8 6,10 4,10z M8,8L10,8 10,10 8,10z" Fill="{StaticResource ResizeGripperForeground}" HorizontalAlignment="Right" Margin="0,0,3,3" VerticalAlignment="Bottom" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>