public frmLogin(Interfaces.IUserInterface FormInterface)
{
InitializeComponent();
//this.DataContext = new LoginViewModel(FormInterface);

this.DataContext = new frmLoginVM(FormInterface);

}

private void frmLogin_IsEnabledChanged(object sender, System.Windows.DependencyPropertyChangedEventArgs e)
{

if ((bool)e.NewValue == false)
{
this.DialogResult = true;
this.Close();
}
}

private void frmLogin_Closed(object sender, System.EventArgs e)
{
this.Close();
}

private void frmLogin_Loaded(object sender, System.Windows.RoutedEventArgs e)
{
//this.Owner.Loaded += new System.Windows.RoutedEventHandler(this.Window_Loaded);
var hwnd = new System.Windows.Interop.WindowInteropHelper(this).Handle;
Utility.UtilityHelper.SetWindowLong(hwnd, Utility.UtilityHelper.GWL_STYLE, Utility.UtilityHelper.GetWindowLong(hwnd, Utility.UtilityHelper.GWL_STYLE) & ~Utility.UtilityHelper.WS_SYSMENU);
}

已在frmLogin_Loaded 使用 句柄更改窗口风格 但是 不好用

求大神解决