Windows 8技巧：Windows 8常用鼠标事件 分析介绍

Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}">
Canvas Name="MainCanvas" Width="600" Height="300" Background="Cornsilk"
PointerWheelChanged="MainCanvas_PointerWheelChanged"
PointerReleased="MainCanvas_PointerReleased"
PointerPressed="MainCanvas_PointerPressed"
PointerMoved="MainCanvas_PointerMoved"
PointerExited="MainCanvas_PointerExited"
PointerEntered="MainCanvas_PointerEntered"
>/Canvas>
TextBlock HorizontalAlignment="Left" Foreground="Gold" Margin="383,99,0,0" TextWrapping="Wrap"
Name="tbLabel" Text="" VerticalAlignment="Top" Height="40" Width="418"/>
TextBlock HorizontalAlignment="Left" Foreground="Gold" Margin="774,99,0,0" TextWrapping="Wrap"
Name="tbLabelNext" Text="" VerticalAlignment="Top" Height="40" Width="209"/>
TextBlock HorizontalAlignment="Left" Foreground="Gold" Margin="564,171,0,0" TextWrapping="Wrap"
Name="tbLabelFore" Text="" VerticalAlignment="Top" Height="40" Width="209"/>
/Grid>

/// summary>
/// 可用于自身或导航至 Frame 内部的空白页。
/// /summary>
public sealed partial class MainPage : Page
{
public MainPage()
{
this.InitializeComponent();
}
Point start = new Point();/p> p> /// summary>
/// 在此页将要在 Frame 中显示时进行调用。
/// /summary>
/// param name="e">描述如何访问此页的事件数据。Parameter
/// 属性通常用于配置页。/param>
protected override void OnNavigatedTo(NavigationEventArgs e)
{/p> p> }/p> p> //鼠标中键滑动事件
private void MainCanvas_PointerWheelChanged(object sender, PointerRoutedEventArgs e)
{
this.tbLabel.Text = "滑动了一次鼠标中箭";
}/p> p> //鼠标点击下去的事件
private void MainCanvas_PointerPressed(object sender, PointerRoutedEventArgs e)
{
start = e.GetCurrentPoint(MainCanvas).Position;
this.tbLabel.Text = "点击了一次鼠标或者屏幕";/p> p> }/p> p> //鼠标松键事件
private void MainCanvas_PointerReleased(object sender, PointerRoutedEventArgs e)
{
Point end = e.GetCurrentPoint(MainCanvas).Position;
double angle = 0;
//判断拖动鼠标角度
if (Math.Abs(end.X - start.X) 1 Math.Abs(end.Y - start.Y) 1)
{
angle = 0;
}
else if (end.X > start.X)
{/p> p> if (end.Y > start.Y)
{
angle = 360 - Math.Atan((end.Y - start.Y) * 1.0 / (end.X - start.X)) * 180 / Math.PI;
}
else
{
angle = Math.Atan((start.Y - end.Y) * 1.0 / (end.X - start.X)) * 180 / Math.PI;
}
}
else if (end.X start.X)
{
if (end.Y > start.Y)
{
angle = Math.Atan((end.Y - start.Y) * 1.0 / (start.X - end.X)) * 180 / Math.PI + 180;
}
else
{
angle = 180 - Math.Atan((start.Y - end.Y) * 1.0 / (start.X - end.X)) * 180 / Math.PI;
}
}
if (angle == 0)
{
this.tbLabel.Text = "点击了一次鼠标或者屏幕";
}
else if (angle >= 45 angle 135)
{
this.tbLabelFore.Text = "从下往上";
}
else if (angle = 45 || angle > 315)
{
this.tbLabelFore.Text = "从左向右滑";
}
else if (angle >= 135 angle 225)
{
this.tbLabelFore.Text = "从右向左滑";
}
else if (angle >= 225 angle 315)
{
this.tbLabelFore.Text = "从上往下";
}/p> p> }

//鼠标移动事件
private void MainCanvas_PointerMoved(object sender, PointerRoutedEventArgs e)
{
Point point = e.GetCurrentPoint(MainCanvas).Position;
this.tbLabel.Text = "鼠标正在移动X:"+point.X+",Y:"+point.Y;
}/p> p> //鼠标移出范围事件
private void MainCanvas_PointerExited(object sender, PointerRoutedEventArgs e)
{
this.tbLabelNext.Text = "鼠标移出作用范围";
}/p> p> //鼠标进入范围事件
private void MainCanvas_PointerEntered(object sender, PointerRoutedEventArgs e)
{
this.tbLabelNext.Text = "鼠标进入范围";
}
}