Typically, controls are composited such that the various elements inside the control (the visual tree) will all report the mouse state for the containing control. For example, a ListBox style control will report IsMouseOver as true if the mouse is anywhere over its geometry, including any ListBoxItem.
If this element captures the mouse, this property remains true until mouse capture is lost and the mouse pointer leaves the element bounds.
Some controls deliberately capture the mouse on certain actions that do not appear to directly involve the mouse. This can lead to IsMouseOver being true even though the mouse has not apparently moved.
The following example references this property as the property type of a Trigger, part of a <Style.Triggers> block. If the mouse is over the control, the control text turns blue and the cursor becomes a hand.
Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)