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

Visual Basic (Usage)	Copy Code
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
)

public: virtual AnnObject* HitTest( 
   AnnPoint testPoint,
   int 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: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

Reference