从 Silverlight 中的 ItemDragEventArgs 获取目标点

发布于 2024-11-15 01:35:20 字数 487 浏览 1 评论 0原文

如何从 ItemDragEventArgs 获取目标点？使用 Microsoft.Windows.DragEventArgs e 很简单：e.GetPosition(<该点相对于的 UIElement>)

XAML


<toolkit:PanelDragDropTarget AllowDrop="True" ItemDroppedOnTarget="DragAndDrop_ItemDroppedOnTarget">

<强>代码隐藏


private void DragAndDrop_ItemDroppedOnTarget(object sender, ItemDragEventArgs e)
{
   // how to get the destination Point here??
}

原文

How does one get the destination point from ItemDragEventArgs? With Microsoft.Windows.DragEventArgs e it is easy: e.GetPosition(<UIElement to which the point is relative to>)

XAML


<toolkit:PanelDragDropTarget AllowDrop="True" ItemDroppedOnTarget="DragAndDrop_ItemDroppedOnTarget">

Code behind


private void DragAndDrop_ItemDroppedOnTarget(object sender, ItemDragEventArgs e)
{
   // how to get the destination Point here??
}

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乞讨 2024-11-22 01:35:20

这看起来像是一个 hack，但它有效并且非常准确：


private Point _releasePoint;

public Grid()
{
   Grid.MouseLeftButtonUp += new MouseButtonEventHandler(Grid_MouseLeftButtonUp);
}

void Grid_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
   _releasePoint = e.GetPosition(Grid);
}

private void DragAndDrop_ItemDroppedOnTarget(object sender, ItemDragEventArgs e)
{
   // fires next and _releasePoint is already set
}

This looks like a hack, but it worked and is pretty accurate:


private Point _releasePoint;

public Grid()
{
   Grid.MouseLeftButtonUp += new MouseButtonEventHandler(Grid_MouseLeftButtonUp);
}

void Grid_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
   _releasePoint = e.GetPosition(Grid);
}

private void DragAndDrop_ItemDroppedOnTarget(object sender, ItemDragEventArgs e)
{
   // fires next and _releasePoint is already set
}

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