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Equality Operator
See Also  Example
Leadtools.Annotations Namespace > AnnPoint Structure : Equality Operator



left
The AnnPoint structure on the left side of the equality operator.
right
The AnnPoint structure on the right side of the equality operator.
Tests whether two AnnPoint structures are equal.

Syntax

Visual Basic (Declaration) 
Public Operator =( _
   ByVal left As AnnPoint, _
   ByVal right As AnnPoint _
) As Boolean
C# 
public bool operator ==( 
   AnnPoint left,
   AnnPoint right
)
Managed Extensions for C++ 
public: bool op_Equality( 
   AnnPoint left,
   AnnPoint right
)
C++/CLI 
public:
bool operator ==( 
   AnnPoint left,
   AnnPoint right
)

Parameters

left
The AnnPoint structure on the left side of the equality operator.
right
The AnnPoint structure on the right side of the equality operator.

Return Value

This operator returns true if left and right have equal X and Y values; otherwise false.

Example

This example creates a point in inches, converts it to pixels and then makes sure the 2 points are still equal.

Visual BasicCopy Code
Public Sub AnnPoint_OperatorEquals()
   ' set up a new unit converter with 96 DPI
   Dim converter As AnnUnitConverter = New AnnUnitConverter(96, 96)
   Dim inches As AnnPoint = New AnnPoint(1.5F, 2.0F, AnnUnit.Inch)
   Dim pixels As AnnPoint = New AnnPoint(inches.ConvertTo(converter, AnnUnit.Pixel).ToPointF(), AnnUnit.Pixel)

   ' should say true
   Dim s As String
   s = String.Format("Should say True: inches == pixels is {0}", AnnPoint.op_Equality(inches, pixels))

   MessageBox.Show(s)

   ' should say false
   s = String.Format("Should say False: inches != pixels is {0}", AnnPoint.op_Inequality(inches, pixels))

   MessageBox.Show(s)
End Sub
C#Copy Code
public void AnnPoint_OperatorEquals() 

   // set up a new unit converter with 96 DPI 
   AnnUnitConverter converter = new AnnUnitConverter(96, 96); 
   AnnPoint inches = new AnnPoint(1.5F, 2f, AnnUnit.Inch); 
   AnnPoint pixels = new AnnPoint(inches.ConvertTo(converter, AnnUnit.Pixel).ToPointF(), AnnUnit.Pixel); 
 
   // should say true 
   string s; 
   s = string.Format("Should say True: inches == pixels is {0}", inches == pixels); 
   MessageBox.Show(s); 
 
   // should say false 
   s = string.Format("Should say False: inches != pixels is {0}", inches != pixels); 
   MessageBox.Show(s); 
}

Remarks

If the two points have different units, the comparison will be done after temporarily converting both to a common unit.

Requirements

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

See Also

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