如何将DragStarted DragDelta事件附加到
Windows 8 / WinRT中的网格中.我在Windows手机中用GestureService.GetGestureListener()方法做了同样的事情.我试图用ManipulationStarted&在Windows 8中的ManipulationDelta事件但结果不一样.在windows手机中单次拖动,它会进入DragDelta事件2次以上.但是另一方面在Windows 8中,在ManupulationDelta事件中,它只会对类似的拖动操作触发一次.
是的,我想我知道你想要什么.
假设你有一些这样的XAML：
<Grid Margin="50">
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<Rectangle Fill="Blue" x:Name="MyRect" />
</Grid>
你想通过拖动它来移动这个矩形.
只需使用这段代码：
public MainPage()
{
this.InitializeComponent();
MyRect.ManipulationMode = ManipulationModes.TranslateX | ManipulationModes.TranslateY;
MyRect.ManipulationDelta += Rectangle_ManipulationDelta;
MyRect.ManipulationCompleted += Rectangle_ManipulationCompleted;
}
private void Rectangle_ManipulationDelta(object sender,ManipulationDeltaRoutedEventArgs e)
{
var _Rectangle = sender as Windows.UI.Xaml.Shapes.Rectangle;
var _Transform = (_Rectangle.RenderTransform = (_Rectangle.RenderTransform as TranslateTransform) ?? new TranslateTransform()) as TranslateTransform;
_Transform.X += e.Delta.Translation.X;
_Transform.Y += e.Delta.Translation.Y;
}
private void Rectangle_ManipulationCompleted(object sender,ManipulationCompletedRoutedEventArgs e)
{
var _Rectangle = sender as Windows.UI.Xaml.Shapes.Rectangle;
_Rectangle.RenderTransform = null;
var _Column = System.Convert.ToInt16(_Rectangle.GetValue(Grid.ColumnProperty));
if (_Column <= 0 && e.Cumulative.Translation.X > _Rectangle.RenderSize.Width * .5)
_Rectangle.SetValue(Grid.ColumnProperty,1);
else if (_Column == 1 && e.Cumulative.Translation.X < _Rectangle.RenderSize.Width * -.5)
_Rectangle.SetValue(Grid.ColumnProperty,0);
var _Row = System.Convert.ToInt16(_Rectangle.GetValue(Grid.RowProperty));
if (_Row <= 0 && e.Cumulative.Translation.Y > _Rectangle.RenderSize.Height * .5)
_Rectangle.SetValue(Grid.RowProperty,1);
else if (_Row == 1 && e.Cumulative.Translation.Y < _Rectangle.RenderSize.Height * -.5)
_Rectangle.SetValue(Grid.RowProperty,0);
}
为了这：
希望我很亲近祝你好运！
