如何在应用程序中禁用 Aero Snap？

是否可以在 WPF 应用程序中禁用 Windows 7 的自动窗口停靠功能？

我最近需要对一个自定义的、可调整大小的ResizeMode = CanResizeWithGrip没有窗口装饰的 WPF 窗口（没有标题栏和按钮）。我用了DragMove()移动窗口，当它被 AeroSnap 最大化时，窗口变得不可移动并因此锁定到位。

I tried 谷仓猴的解决方案 https://stackoverflow.com/a/12373042/618895，这部分有效，但它仍然会显示 AeroSnap 图形并将应用程序大小调整为全屏大小。我在下面修改了它，现在它按预期工作：仍然可以调整大小，但根本没有 AeroSnap。

void Window1_MouseDown(object sender, MouseButtonEventArgs e)
{
    if( e.LeftButton == MouseButtonState.Pressed )
    {
        // this prevents win7 aerosnap
        if( this.ResizeMode != System.Windows.ResizeMode.NoResize )
        {
            this.ResizeMode = System.Windows.ResizeMode.NoResize;
            this.UpdateLayout();
        }

        DragMove();
    }
}

void Window1_MouseUp( object sender, MouseButtonEventArgs e )
{
    if( this.ResizeMode == System.Windows.ResizeMode.NoResize )
    {
        // restore resize grips
        this.ResizeMode = System.Windows.ResizeMode.CanResizeWithGrip;
        this.UpdateLayout();
    }
}

EDIT:

自从我写这篇文章以来已经有一段时间了，但由于人们仍然在看这篇文章，我将用我现在使用的内容来更新它。我仍然使用基本上相同的方法来防止边缘捕捉和移动我的窗口，但我现在将它们打包到自定义中Behavior<>我可以附加到的课程Window or UserControl。这使得它们非常容易与 MVVM 一起使用（我使用 Caliburn Micro）。

行为类别是：

/// <summary>
/// behavior that makes a window/dialog draggable by clicking anywhere 
/// on it that is not a control (ie, button)
/// </summary>
public class DragMoveBehavior<T> : Behavior<T> where T : FrameworkElement
{
    protected override void OnAttached()
    {
        AssociatedObject.MouseLeftButtonDown += MouseDown;
        base.OnAttached();
    }

    protected override void OnDetaching()
    {
        AssociatedObject.MouseLeftButtonDown -= MouseDown;
        base.OnDetaching();
    }

    void MouseDown( object sender, EventArgs ea ) => Window.GetWindow( sender as T )?.DragMove();
}

public class WinDragMoveBehavior : DragMoveBehavior<Window> { }

public class UCDragMoveBehavior : DragMoveBehavior<UserControl> { }

/// <summary>
/// behavior that makes a window/dialog not resizable while clicked.  this prevents
/// the window from being snapped to the edge of the screen (AeroSnap).  if DragMoveBehavior
/// is also used, this must be attached first.
/// </summary>
/// <typeparam name="T"></typeparam>
public class NoSnapBehavior<T> : Behavior<T> where T : FrameworkElement
{
    ResizeMode lastMode = ResizeMode.NoResize;
    protected override void OnAttached()
    {
        AssociatedObject.MouseLeftButtonDown += MouseDown;
        AssociatedObject.MouseLeftButtonUp += MouseUp;
        base.OnAttached();
    }

    protected override void OnDetaching()
    {
        AssociatedObject.MouseLeftButtonDown -= MouseDown;
        AssociatedObject.MouseLeftButtonUp -= MouseUp;
        base.OnDetaching();
    }

    /// <summary>
    /// make it so the window can be moved by dragging
    /// </summary>
    void MouseDown( object sender, EventArgs ea )
    {
        var win = Window.GetWindow( sender as T );
        if( win != null && win.ResizeMode != ResizeMode.NoResize )
        {
            lastMode = win.ResizeMode;
            win.ResizeMode = ResizeMode.NoResize;
            win.UpdateLayout();
        }
    }

    void MouseUp( object sender, EventArgs ea )
    {
        var win = Window.GetWindow( sender as T );
        if( win != null && win.ResizeMode != lastMode )
        {
            win.ResizeMode = lastMode;
            win.UpdateLayout();
        }
    }
}

public class WinNoSnapBehavior : NoSnapBehavior<Window> { }

public class UCNoSnapBehavior : NoSnapBehavior<UserControl> { }

然后我将它们附加到我的对话框视图中：

<UserControl ...
  xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
  xmlns:util:="...">
  <i:Interaction.Behaviors>
    <util:UCNoSnapBehavior/>
    <util:UCDragMoveBehavior/>
  </i:Interaction.Behaviors>

  ...

</UserControl>

而且它确实有效！