【问题标题】:How to drag a stackpanel (not drag-drop) like dragging a application window in windows如何像在 Windows 中拖动应用程序窗口一样拖动堆栈面板(而不是拖放)
【发布时间】:2021-11-19 17:46:27
【问题描述】:

我正在制作一个uwp App,它是一个widgets应用程序,如果用户想要重新定位widgets,(每个widget都是一个带有内容的stackpanel),stackpanel应该根据鼠标移动,就像拖动一个应用程序一样windows中的windows,请帮帮我,我一直在尝试,但一无所获!

【问题讨论】:

    标签: c# windows xaml uwp stackpanel


    【解决方案1】:

    要使 StackPanel 可移动,您必须向其中添加这两个事件。

    PointerPressed="StackPanel_PointerPressed"
    PointerMoved="StackPanel_PointerMoved"
    

    在您的 C# 代码中,您必须创建一个变量并添加一个 using:

    using Windows.Foundation;
    
    private Point MouseDownLocation;
    

    StackPanel_PointerPressed 事件:

    private void StackPanel_PointerPressed(object sender, PointerRoutedEventArgs e)
    {
        if (sender is StackPanel sp)
        {
            if (e.GetCurrentPoint(sp).Properties.IsLeftButtonPressed)
            {
                MouseDownLocation.Y = e.GetCurrentPoint(sp).Position.Y;
                MouseDownLocation.X = e.GetCurrentPoint(sp).Position.X;
            }
        }
    }
    

    还有 StackPanel_PointerMoved 事件:

    private void StackPanel_PointerMoved(object sender, PointerRoutedEventArgs e)
    {
        if (sender is StackPanel sp)
        {
            if (e.GetCurrentPoint(sp).Properties.IsLeftButtonPressed)
            {
                var MarginLeft = e.GetCurrentPoint(sp).Position.X + sp.Margin.Left - MouseDownLocation.X;
                var MarginTop = e.GetCurrentPoint(sp).Position.Y + sp.Margin.Top - MouseDownLocation.Y;
                sp.Margin = new Thickness(MarginLeft, MarginTop, sp.Margin.Right, sp.Margin.Bottom);
            }
        }
    }
    

    【讨论】:

    • 好吧,它不起作用,它更像是调整堆栈面板的大小。
    【解决方案2】:

    我碰巧解决了这个问题,虽然没有@FrozenAssassine 的帮助是不可能的,这就是代码

      if (sender is StackPanel sp)
            {
                if (e.GetCurrentPoint(sp).Properties.IsLeftButtonPressed)
                {
                    var MarginLeft = e.GetCurrentPoint(sp).Position.X + sp.Margin.Left - MouseDownLocation.X;
                    var MarginTop = e.GetCurrentPoint(sp).Position.Y + sp.Margin.Top - MouseDownLocation.Y;
                    var MarginRight = e.GetCurrentPoint(sp).Position.X + -sp.Margin.Left+220 - MouseDownLocation.X;
                    var MarginBottom = e.GetCurrentPoint(sp).Position.Y + -sp.Margin.Top+140 - MouseDownLocation.Y; 
                    sp.Margin = new Thickness(MarginLeft, MarginTop, MarginRight, MarginBottom);
                    
                }
    

    刚刚对 PointerMoved 函数做了一些更改,非常感谢 FrozenAssassine!

    【讨论】:

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