It is often used to display the prompt information when the mouse is hovered.

public class Poptip : AdornerElement

Attributes

Property	Description	Default Value	Remarks
HitMode	Trigger Mode	HitMode.Hover
Content	Reminder content
ContentTemplate	Prompt content template
ContentStringFormat	Prompt content text format
ContentTemplateSelector	Prompt Content Template Selector
VerticalOffset	Offset	0
HorizontalOffset	Offset	0
PlacementType	PlacementType.Top
IsOpen	Whether to open	false
Delay		1000.0

Case

<Button>
    <hc:Poptip.Instance>
        <hc:Poptip Content="Text" PlacementType="TopLeft"/>
    </hc:Poptip.Instance>
</Button>

<ToggleButton hc:Poptip.HitMode="None" hc:Poptip.IsOpen="{Binding IsChecked,RelativeSource={RelativeSource Self}}" hc:Poptip.Content="Text" hc:Poptip.Placement="RightTop"/>