Window2.xaml

<flyctrllib:WindowBigClose x:Class="WpfApplication1.Window2"
        xmlns:flyctrllib="clr-namespace:FLY.ControlLibrary;assembly=FLY.ControlLibrary"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Window2" >
    <Grid Height="240" Width="477">
        <TextBox Height="23" HorizontalAlignment="Left" Margin="160,110,0,0" Name="textBox1" VerticalAlignment="Top" Width="120" />
        <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="325,191,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" />
    </Grid>
</flyctrllib:WindowBigClose>