<Window x:Class="WpfEditor.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:winForms="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms" Title="MainWindow" Height="350" Width="525" xmlns:my="clr-namespace:WpfEditor"> <Grid> <Label Content="Label" Height="27" HorizontalAlignment="Left" Margin="15,22,0,0" Name="label1" VerticalAlignment="Top" Width="71" /> <WindowsFormsHost Margin="116,68,12,12"> <winForms:Panel x:Name="GamePanel" /> </WindowsFormsHost> </Grid> </Window>