原文:
wpf简单的绘图板
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xaml：
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="418" Width="525">
<DockPanel LastChildFill="True">
<StackPanel MinWidth="100" DockPanel.Dock="Left">
<TextBlock HorizontalAlignment="Center">editing mode</TextBlock>
<Button x:Name="btnselection" Margin="5" Click="btnselection_Click">selection</Button>
<Button x:Name="btndraw" Margin="5" Click="btndraw_Click">draw</Button>
<Button x:Name="btnerase" Margin="5" Click="btnerase_Click">erase</Button>
<TextBlock HorizontalAlignment="Center">choss color:</TextBlock>
<Ellipse x:Name="rectred" Fill="Red" MinHeight="50" Margin="5" MouseDown="rectred_MouseDown"></Ellipse>
<Ellipse x:Name="rectgreen" Fill="Green" MinHeight="50" Margin="5" MouseDown="rectgreen_MouseDown"></Ellipse>
<Ellipse x:Name="rectblue" Fill="Blue" MinHeight="50" Margin="5" MouseDown="rectblue_MouseDown"></Ellipse>
<Ellipse x:Name="rectyellow" Fill="Yellow" MinHeight="50" Margin="5"></Ellipse>
</StackPanel>
<InkCanvas x:Name="inkcanvas1" EditingMode="Ink" ClipToBounds="True">
</InkCanvas>
</DockPanel>
</Window>
后台：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace WpfApplication1
{
/// <summary>
/// MainWindow.xaml 的交互逻辑
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void btnerase_Click(object sender, RoutedEventArgs e)
{
inkcanvas1.EditingMode = System.Windows.Controls.InkCanvasEditingMode.EraseByPoint;
}
private void rectred_MouseDown(object sender, MouseButtonEventArgs e)
{
inkcanvas1.DefaultDrawingAttributes.Color = System.Windows.Media.Colors.Red;
}
private void btndraw_Click(object sender, RoutedEventArgs e)
{
inkcanvas1.EditingMode = System.Windows.Controls.InkCanvasEditingMode.Ink;
}
private void rectgreen_MouseDown(object sender, MouseButtonEventArgs e)
{
inkcanvas1.DefaultDrawingAttributes.Color = System.Windows.Media.Colors.Green;
}
private void rectblue_MouseDown(object sender, MouseButtonEventArgs e)
{
inkcanvas1.DefaultDrawingAttributes.Color = System.Windows.Media.Colors.Blue;
}
private void rectyellow_MouseDown(object sender, MouseButtonEventArgs e)
{
inkcanvas1.DefaultDrawingAttributes.Color = System.Windows.Media.Colors.Yellow;
;
}
private void btnselection_Click(object sender, RoutedEventArgs e)
{
inkcanvas1.EditingMode = System.Windows.Controls.InkCanvasEditingMode.Select;
}
}
}
效果：
