这种应用场景其实很多，比如游戏中装备/魔法的选择菜单，这里借用了"深蓝色右手"的一张图
再比如聊天室中的文本颜色设置
虽然sl的ToolTipService.ToolTip属性可以设置任何对象，比如下面这样
代码
代码语言：js复制1 <Rectangle Fill="Red" Height="50" Width="50" ToolTipService.Placement="Top">
2 <ToolTipService.ToolTip>
3 <StackPanel Orientation="Horizontal">
4 <Rectangle Fill="Green" Height="50" Width="50"></Rectangle>
5 <Rectangle Fill="Blue" Height="50" Width="50" Margin="1,0,0,0"></Rectangle>
6 <Rectangle Fill="Pink" Height="50" Width="50" Margin="1,0,0,0"></Rectangle>
7 </StackPanel>
8 </ToolTipService.ToolTip>
9 </Rectangle>但是有一个问题，鼠标一旦离开对象，tooltip就消失了，没办法在tooltip工具栏上点选操作。
所以得换一种思路，可以借助VSM方便的实现，设置好tooltip工具条后，定义二个基本的状态：Enter ，Leave 即可，Enter状态中设置tooltip对应的对象显示，Leave状态中设置tooltip对象隐藏 示例代码(Xaml)：
代码
代码语言：js复制<UserControl
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
x:Class="tooltipTest.MainPage"
d:DesignWidth="640" d:DesignHeight="480">
<Grid x:Name="LayoutRoot">
<!--视觉状态定义区-->
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommStates">
<VisualState x:Name="Enter">
<Storyboard>
<ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="itemsTip" Storyboard.TargetProperty="(UIElement.Visibility)">
<DiscreteObjectKeyFrame KeyTime="00:00:00">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Leave">
<Storyboard>
<ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="itemsTip" Storyboard.TargetProperty="(UIElement.Visibility)">
<DiscreteObjectKeyFrame KeyTime="00:00:00.1">
<DiscreteObjectKeyFrame.Value>
<Visibility>Collapsed</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Canvas HorizontalAlignment="Center" VerticalAlignment="Center" x:Name="cTip" Height="20" Width="20" Cursor="Hand" MouseLeave="GoToLeave" MouseEnter="GoToEnter">
<Rectangle x:Name="rColor" Fill="Black" Width="20" Height="20" ToolTipService.ToolTip="选择颜色"/>
<!--tip显示区-->
<ItemsControl x:Name="itemsTip" Canvas.Top="-21" Canvas.Left="0" Visibility="Collapsed">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal"/>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Rectangle Fill="{Binding Color}" ToolTipService.ToolTip="{Binding Name}" Width="20" Height="20" Margin="0,0,1,0" MouseLeftButtonDown="ChangeColor"/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Canvas>
</Grid>
</UserControl>
后端代码：
代码语言：js复制using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Shapes;
namespace tooltipTest
{
public partial class MainPage : UserControl
{
List<FillColor> lstTipsData;
public MainPage()
{
InitializeComponent();
//初始化数据
lstTipsData = new List<FillColor>() {
new FillColor(){ Color = new SolidColorBrush(Colors.Red), Name="红色"},
new FillColor(){ Color = new SolidColorBrush(Colors.Blue), Name="蓝色"},
new FillColor(){ Color = new SolidColorBrush(Colors.Green),Name="绿色"},
new FillColor(){ Color = new SolidColorBrush(Colors.Magenta), Name="洋红"},
new FillColor(){ Color = new SolidColorBrush(Colors.Black), Name="黑色"},
new FillColor(){ Color = new SolidColorBrush(Colors.Orange), Name="橙色"},
};
this.Loaded = new RoutedEventHandler(MainPage_Loaded);
}
void MainPage_Loaded(object sender, RoutedEventArgs e)
{
itemsTip.ItemsSource = lstTipsData; //数据绑定
}
private void GoToEnter(object sender, MouseEventArgs e)
{
VisualStateManager.GoToState(this, "Enter", false);
}
private void GoToLeave(object sender, MouseEventArgs e)
{
VisualStateManager.GoToState(this, "Leave", false);
}
/// <summary>
/// 点击后更换颜色
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ChangeColor(object sender, MouseButtonEventArgs e)
{
rColor.Fill = (sender as Rectangle).Fill;
VisualStateManager.GoToState(this, "Leave", false);
}
}
/// <summary>
/// 测试实体类
/// </summary>
public class FillColor
{
public SolidColorBrush Color { set; get; }
public string Name { set; get; }
}
}
