<Pagex:Class="Windows10.Controls.MediaControl.InkSimple"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:local="using:Windows10.Controls.MediaControl"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"mc:Ignorable="d"><Grid Background="Transparent"><StackPanel Margin="10 0 10 10"><Button Name="btnClear" Content="清除" Click="btnClear_Click" Margin="5" /><Canvas Name="canvas" Background="Blue" Width="800" Height="480" HorizontalAlignment="Left" Margin="5" /></StackPanel></Grid>
</Page>

/** 本例用于演示如何通过 Pointer 相关事件的处理，来实现一个简单的涂鸦板*/using System;
using System.Collections.Generic;
using Windows.Foundation;
using Windows.UI;
using Windows.UI.Input;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Shapes;namespace Windows10.Controls.MediaControl
{public sealed partial class InkSimple : Page{// 用于保存触摸点（PointerId - Point）private Dictionary<uint, Point?> _dicPoint;public InkSimple(){this.InitializeComponent();canvas.PointerPressed += canvas_PointerPressed;canvas.PointerMoved += canvas_PointerMoved;canvas.PointerReleased += canvas_PointerReleased;canvas.PointerExited += canvas_PointerExited;_dicPoint = new Dictionary<uint, Point?>();}void canvas_PointerPressed(object sender, PointerRoutedEventArgs e){// 指针按下后，保存此触摸点PointerPoint pointerPoint = e.GetCurrentPoint(canvas);_dicPoint[pointerPoint.PointerId] = pointerPoint.Position;}void canvas_PointerMoved(object sender, PointerRoutedEventArgs e){PointerPoint pointerPoint = e.GetCurrentPoint(canvas);if (_dicPoint.ContainsKey(pointerPoint.PointerId) && _dicPoint[pointerPoint.PointerId].HasValue){Point currentPoint = pointerPoint.Position;Point previousPoint = _dicPoint[pointerPoint.PointerId].Value;// 如果指针移动过程中，两个点间的距离超过 4 则在两点间绘制一条直线，以完成涂鸦if (ComputeDistance(currentPoint, previousPoint) > 4){Line line = new Line(){X1 = previousPoint.X,Y1 = previousPoint.Y,X2 = currentPoint.X,Y2 = currentPoint.Y,StrokeThickness = 5,Stroke = new SolidColorBrush(Colors.Orange),StrokeEndLineCap = PenLineCap.Round};_dicPoint[pointerPoint.PointerId] = currentPoint;canvas.Children.Add(line);}}}void canvas_PointerReleased(object sender, PointerRoutedEventArgs e){// 指针释放后，从字典中删除此 PointerId 的数据PointerPoint pointerPoint = e.GetCurrentPoint(canvas);if (_dicPoint.ContainsKey(pointerPoint.PointerId))_dicPoint.Remove(pointerPoint.PointerId);}void canvas_PointerExited(object sender, PointerRoutedEventArgs e){// 指针离开相当于指针释放
            canvas_PointerReleased(sender, e);}// 清除涂鸦private void btnClear_Click(object sender, RoutedEventArgs e){canvas.Children.Clear();_dicPoint.Clear();}// 计算两个点（Point）之间的距离private double ComputeDistance(Point point1, Point point2){return Math.Sqrt(Math.Pow(point1.X - point2.X, 2) + Math.Pow(point1.Y - point2.Y, 2));}}
}

<Pagex:Class="Windows10.Controls.MediaControl.InkCanvasDemo1"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:local="using:Windows10.Controls.MediaControl"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"mc:Ignorable="d"><Grid Background="Transparent"><StackPanel Margin="10 0 10 10"><Border Background="White" Width="480" Height="320" Margin="5" HorizontalAlignment="Left"><!--InkCanvas - 涂鸦板控件--><InkCanvas Name="inkCanvas" /></Border><ComboBox Name="drawingColor" Header="Color" SelectedIndex="0" SelectionChanged="UpdateDefaultDrawingAttributes_Handler" Margin="5"><x:String>Red</x:String><x:String>Green</x:String><x:String>Blue</x:String></ComboBox><Slider Name="drawingSize" Foreground="Orange" Background="Red" Style="{StaticResource MySliderStyle}" Header="Size" Minimum="1" Maximum="20" Value="5" ValueChanged="UpdateDefaultDrawingAttributes_Handler" Margin="5" /><CheckBox Name="drawingDrawAsHighlighter" Content="DrawAsHighlighter" IsChecked="False" Checked="UpdateDefaultDrawingAttributes_Handler" Unchecked="UpdateDefaultDrawingAttributes_Handler" Margin="5" /><CheckBox Name="drawingFitToCurve" Content="FitToCurve" IsChecked="True" Checked="UpdateDefaultDrawingAttributes_Handler" Unchecked="UpdateDefaultDrawingAttributes_Handler" Margin="5" /><ToggleSwitch Name="drawingPenTip" Style="{StaticResource MyToggleSwitchStyle}" OnContent="PenTipShape.Circle" OffContent="PenTipShape.Rectangle" IsOn="True" Toggled="UpdateDefaultDrawingAttributes_Handler" Margin="5" /><CheckBox Name="drawingPenTipTransform" Content="通过 PenTipTransform 转换 PenTip 来实现笔尖形状的自定义" IsChecked="False" Checked="UpdateDefaultDrawingAttributes_Handler" Unchecked="UpdateDefaultDrawingAttributes_Handler" Margin="5" /><CheckBox Name="chkErasing" Content="将输入指定为擦除模式" IsChecked="False" Checked="UpdateDefaultDrawingAttributes_Handler" Unchecked="UpdateDefaultDrawingAttributes_Handler" Margin="5" /><CheckBox Name="chkIsInputEnabled" Content="IsInputEnabled" IsChecked="True" Checked="UpdateDefaultDrawingAttributes_Handler" Unchecked="UpdateDefaultDrawingAttributes_Handler" Margin="5" /><Button Name="buttonClear" Content="全部清除"  Click="buttonClear_Click" /></StackPanel></Grid>
</Page>

/** InkCanvas - 涂鸦板控件（继承自 FrameworkElement, 请参见 /Controls/BaseControl/FrameworkElementDemo/）*     InkPresenter - 获取 InkPresenter 对象*        * InkPresenter - 涂鸦板*     IsInputEnabled - 是否启用涂鸦板*     InputDeviceTypes - 输入设备的类型（None, Touch, Pen, Mouse）*     InputProcessingConfiguration.Mode - 输入模式（None, Inking, Erasing）*     CopyDefaultDrawingAttributes() - 获取 InkDrawingAttributes 对象*     UpdateDefaultDrawingAttributes(InkDrawingAttributes value) - 设置 InkDrawingAttributes 对象*     * InkDrawingAttributes - 涂鸦笔尖属性*     IgnorePressure - 是否忽略触摸压力*     Color - 笔尖的颜色*     Size - 笔尖的尺寸（宽和高）*     DrawAsHighlighter - 覆盖之前的涂鸦时（false - 直接覆盖；true - 高亮显示覆盖区域）*     FitToCurve - 涂鸦时（true - 使用贝塞尔曲线生成涂鸦；false - 使用直线生成涂鸦）*     PenTip - 笔尖的形状（Circle, Rectangle）*     PenTipTransform - 用于转换 PenTip 的 Matrix3x2 仿射转换矩阵（Matrix3x2 提供了一些简便的方法：CreateRotation, CreateScale, CreateSkew, CreateTranslation 等）。通过它可以自定义笔尖的形状*/using System.Numerics;
using Windows.Foundation;
using Windows.UI;
using Windows.UI.Core;
using Windows.UI.Input.Inking;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;namespace Windows10.Controls.MediaControl
{public sealed partial class InkCanvasDemo1 : Page{private InkPresenter _inkPresenter;public InkCanvasDemo1(){this.InitializeComponent();_inkPresenter = inkCanvas.InkPresenter;_inkPresenter.InputDeviceTypes = CoreInputDeviceTypes.Mouse | CoreInputDeviceTypes.Pen | CoreInputDeviceTypes.Touch;UpdateDefaultDrawingAttributes();}private void UpdateDefaultDrawingAttributes_Handler(object sender, RoutedEventArgs e){UpdateDefaultDrawingAttributes();}private void buttonClear_Click(object sender, RoutedEventArgs e){_inkPresenter.StrokeContainer.Clear();}private void UpdateDefaultDrawingAttributes(){if (_inkPresenter != null){InkDrawingAttributes drawingAttributes = _inkPresenter.CopyDefaultDrawingAttributes();drawingAttributes.IgnorePressure = true;switch (drawingColor.SelectedValue.ToString()){case "Red":drawingAttributes.Color = Colors.Red;break;case "Green":drawingAttributes.Color = Colors.Green;break;case "Blue":drawingAttributes.Color = Colors.Blue;break;}drawingAttributes.Size = new Size(drawingSize.Value, drawingSize.Value);drawingAttributes.DrawAsHighlighter = drawingDrawAsHighlighter.IsChecked.Value;drawingAttributes.FitToCurve = drawingFitToCurve.IsChecked.Value;drawingAttributes.PenTip = drawingPenTip.IsOn ? PenTipShape.Circle : PenTipShape.Rectangle;if (drawingPenTipTransform.IsChecked == true)drawingAttributes.PenTipTransform = Matrix3x2.CreateSkew(4, 4);elsedrawingAttributes.PenTipTransform = Matrix3x2.Identity;_inkPresenter.UpdateDefaultDrawingAttributes(drawingAttributes);if (chkErasing.IsChecked == true)_inkPresenter.InputProcessingConfiguration.Mode = InkInputProcessingMode.Erasing;else_inkPresenter.InputProcessingConfiguration.Mode = InkInputProcessingMode.Inking;_inkPresenter.IsInputEnabled = chkIsInputEnabled.IsChecked.Value;}}}
}