HitTest Method (AnnContainer)

public virtual AnnObject HitTest( 
   AnnPoint testPoint,
   int buffer
)

'Declaration
 
Public Overridable Function HitTest( _
   ByVal testPoint As AnnPoint, _
   ByVal buffer As Integer _
) As AnnObject

'Usage
 
Dim instance As AnnContainer
Dim testPoint As AnnPoint
Dim buffer As Integer
Dim value As AnnObject
 
value = instance.HitTest(testPoint, buffer)

public:
virtual AnnObject^ HitTest( 
   AnnPoint testPoint,
   int buffer
) 

Parameters

testPoint

The AnnPoint to be tested.

buffer

Threshold buffer value.

Return Value

testPoint should be in physical coordinates.

buffer is used to make the test point "bigger" to compensate for errors and provide smoother hit-testing. For example, if buffer is 2, a square with a length of 4 pixels around testPoint will be used to perform the hit-testing.

If more than one object overlaps underneath the test point, the method will return the object on top of the Z-order.

Target Platforms

Reference

AnnContainer Class
AnnContainer Members