private void BtnTest3_Click(object sender, RoutedEventArgs e)
{
this.WindowState = WindowState.Minimized;
WinDrawTest3 winDrawTest3 = new WinDrawTest3();
winDrawTest3.Show();
winDrawTest3.Activate();
}
public static WinDrawTest3 getInstance()
{
if (instance == null)
{
instance = new WinDrawTest3();
instance.WindowState = WindowState.Maximized;
instance.Activate();
}
return(instance);
}