When WPF using WindowsXamlHost and WindowsXamlHost.children rotate an angle,there have some white color can we Cutting it?

GuoLearn 251

when WindowsXamlHost.children rotate an angle ,it like this （can we make the corner white disappear ?）

Zhanglong Wu-MSFT 261 Reputation points Microsoft Vendor

2021-09-02T08:49:02.033+00:00

Hi @GuoLearn ,

>>there have some white color can we Cutting it?

Do you mean to change the white color to transparent？could you please describle your issue in detailed and share your relevant code to reproduce the issue.

Best regards,
Zhanglong
GuoLearn 251 Reputation points

2021-09-07T09:05:07.947+00:00
Hi @Zhanglong Wu-MSFT

yes ,I mean to change the white color to transparent.

WPF:

xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"

<xamlhost:WindowsXamlHost ChildChanged="WindowsXamlHost_ChildChanged" InitialTypeName="App1.MyUserControl1" />

UWP:
<UserControl
x:Class="App1.MyUserControl1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:App1"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
d:DesignHeight="300"
d:DesignWidth="400">

<Grid> <Rectangle Width="300" Height="300" Fill="Orange" RenderTransformOrigin="0.5,0.5"> <Rectangle.RenderTransform> <CompositeTransform Rotation="45"/> </Rectangle.RenderTransform> </Rectangle> </Grid>

</UserControl>