Use this function passing in a specific pixel location relative to the top-left location of the layout box and obtains the information about the correspondent hit-test metrics of the text string where the hit-test has occurred.

'宣言
 
Public MustOverride Function HitTest( _
   ByVal x As System.Double, _
   ByVal y As System.Double _
) As C1TextLayout.HitTestInfo

'使用法
 
Dim instance As C1TextLayout
Dim x As System.Double
Dim y As System.Double
Dim value As C1TextLayout.HitTestInfo
 
value = instance.HitTest(x, y)

public abstract C1TextLayout.HitTestInfo HitTest( 
   System.double x,
   System.double y
)