这是你想做的事情的解决方案。延迟时间可以在序列图像板定义中设置。将此代码插入新的wpf app project Window.xaml文件。
<Window.Resources>
<Storyboard x:Key="ShowPopup">
<BooleanAnimationUsingKeyFrames Storyboard.TargetName="LockPopup" Storyboard.TargetProperty="(Popup.IsOpen)">
<DiscreteBooleanKeyFrame KeyTime="00:00:00.5" Value="True" />
</BooleanAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="HidePopup" Storyboard.TargetName="LockPopup" Storyboard.TargetProperty="(Popup.IsOpen)">
<BooleanAnimationUsingKeyFrames>
<DiscreteBooleanKeyFrame KeyTime="00:00:00.5" Value="False" />
</BooleanAnimationUsingKeyFrames>
</Storyboard>
</Window.Resources>
<Grid x:Name="grid" ShowGridLines="True">
<Image x:Name="LockImage" Stretch="None" >
<Image.Source>
<DrawingImage>
<DrawingImage.Drawing>
<GeometryDrawing Brush="Black">
<GeometryDrawing.Geometry>
<EllipseGeometry RadiusX="10" RadiusY="10"/>
</GeometryDrawing.Geometry>
</GeometryDrawing>
</DrawingImage.Drawing>
</DrawingImage>
</Image.Source>
<Image.Triggers>
<EventTrigger RoutedEvent="Image.MouseLeftButtonDown">
<BeginStoryboard Storyboard="{StaticResource ShowPopup}"/>
</EventTrigger>
<EventTrigger RoutedEvent="Image.MouseLeave">
<BeginStoryboard Storyboard="{StaticResource HidePopup}"/>
</EventTrigger>
</Image.Triggers>
</Image>
<Popup x:Name="LockPopup" PlacementTarget="{Binding ElementName=LockImage}" DataContext="{Binding}" Placement="Bottom">
<TextBlock Text="This is a popup" Background="White" Foreground="Black" />
</Popup>
</Grid>