mainwindow_basic.xaml

<Window x:Class="Epe.xaml.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:Epe.xaml"
        mc:Ignorable="d"
        WindowStyle="None" MinHeight="400" MinWidth="850" Height="600" Width="1200" Icon="/Images/ICON.ico">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="30"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <Grid x:Name="TitleBar" Style="{StaticResource TitleBar}" MouseDown="TitleBar_MouseDown" Grid.Row="0">
            <StackPanel Orientation="Horizontal" HorizontalAlignment="Left">
                <StackPanel.Resources>
                    <Style TargetType="TextBlock">
                        <Setter Property="TextAlignment" Value="Center"/>
                        <Setter Property="VerticalAlignment" Value="Center"/>
                        <Setter Property="Foreground" Value="{StaticResource White}"/>
                        <Setter Property="Margin" Value="10,0,0,0"/>
                    </Style>
                </StackPanel.Resources>
                <Image Source="/Images/icon.ico" Width="35"/>
                <TextBlock Text="Title"/>
            </StackPanel>
            <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
                <Button x:Name="MinimizeButton" Content="ㅡ" Width="35" Margin="0" Click="MinimizeButton_Click"/>
                <Button x:Name="CloseButton" Content="X" Width="35" Margin="0" Click="CloseButton_Click"/>
            </StackPanel>
        </Grid>
        <Grid Grid.Row="1" VerticalAlignment="Stretch">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="4*"/>
                <ColumnDefinition Width="1*"/>
            </Grid.ColumnDefinitions>
            <Grid.Resources>
                <Style TargetType="StackPanel">
                    <Setter Property="HorizontalAlignment" Value="Stretch"/>
                    <Setter Property="VerticalAlignment" Value="Stretch"/>
                </Style>
            </Grid.Resources>
            <Grid HorizontalAlignment="Stretch" Grid.Column="0">
                <StackPanel Orientation="Vertical">

                </StackPanel>
            </Grid>
            <Grid HorizontalAlignment="Stretch" Grid.Column="1">
                <StackPanel Orientation="Vertical">

                </StackPanel>
            </Grid>
        </Grid>
        
    </Grid>
</Window>

/*
        private void TitleBar_MouseDown(object sender, MouseButtonEventArgs e) => this.DragMove();
        private void MinimizeButton_Click(object sender, RoutedEventArgs e) => this.WindowState = WindowState.Minimized;
        private void CloseButton_Click(object sender, RoutedEventArgs e) => this.Close();
/*