Point Struct-datatyp

Definition

public value class Point

public value class Point : IEquatable<System::Drawing::Point>

[System.ComponentModel.TypeConverter(typeof(System.Drawing.PointConverter))]
[System.Runtime.InteropServices.ComVisible(true)]
[System.Serializable]
public struct Point

public struct Point

public struct Point : IEquatable<System.Drawing.Point>

[<System.ComponentModel.TypeConverter(typeof(System.Drawing.PointConverter))>]
[<System.Runtime.InteropServices.ComVisible(true)>]
[<System.Serializable>]
type Point = struct

type Point = struct

Public Structure Point

Public Structure Point
Implements IEquatable(Of Point)

Arv

Object

ValueType

Point

Attribut

TypeConverterAttribute ComVisibleAttribute SerializableAttribute

Implementeringar

IEquatable<Point>

Exempel

I följande kodexempel skapas punkter och storlekar med flera av de överlagrade operatorerna som definierats för dessa typer. Det visar också hur du SystemPens använder klassen.

Det här exemplet är utformat för att användas med Windows Forms. Skapa ett formulär som innehåller ett Button med namnet subtractButton. Klistra in koden i formuläret och anropa CreatePointsAndSizes metoden från formulärets Paint händelsehanteringsmetod och skicka e som PaintEventArgs.

void CreatePointsAndSizes( PaintEventArgs^ e )
{
   // Create the starting point.
   Point startPoint = Point(subtractButton->Size);
   
   // Use the addition operator to get the end point.
   Point endPoint = startPoint + System::Drawing::Size( 140, 150 );
   
   // Draw a line between the points.
   e->Graphics->DrawLine( SystemPens::Highlight, startPoint, endPoint );
   
   // Convert the starting point to a size and compare it to the
   // subtractButton size.  
   System::Drawing::Size buttonSize = (System::Drawing::Size)startPoint;
   if ( buttonSize == subtractButton->Size )
   {
      e->Graphics->DrawString( "The sizes are equal.", gcnew System::Drawing::Font( this->Font,FontStyle::Italic ), Brushes::Indigo, 10.0F, 65.0F );
   }
}

private void CreatePointsAndSizes(PaintEventArgs e)
{

    // Create the starting point.
    Point startPoint = new Point(subtractButton.Size);

    // Use the addition operator to get the end point.
    Point endPoint = startPoint + new Size(140, 150);

    // Draw a line between the points.
    e.Graphics.DrawLine(SystemPens.Highlight, startPoint, endPoint);

    // Convert the starting point to a size and compare it to the
    // subtractButton size.  
    Size buttonSize = (Size)startPoint;
    if (buttonSize == subtractButton.Size)

        // If the sizes are equal, tell the user.
    {
        e.Graphics.DrawString("The sizes are equal.", 
            new Font(this.Font, FontStyle.Italic), 
            Brushes.Indigo, 10.0F, 65.0F);
    }
}

Private Sub CreatePointsAndSizes(ByVal e As PaintEventArgs)

    ' Create the starting point.
    Dim startPoint As New Point(subtractButton.Size)

    ' Use the addition operator to get the end point.
    Dim endPoint As Point = Point.op_Addition(startPoint, _
        New Size(140, 150))

    ' Draw a line between the points.
    e.Graphics.DrawLine(SystemPens.Highlight, startPoint, endPoint)

    ' Convert the starting point to a size and compare it to the
    ' subtractButton size.  
    Dim buttonSize As Size = Point.op_Explicit(startPoint)
    If (Size.op_Equality(buttonSize, subtractButton.Size)) Then

        ' If the sizes are equal, tell the user.
        e.Graphics.DrawString("The sizes are equal.", _
            New Font(Me.Font, FontStyle.Italic), _
            Brushes.Indigo, 10.0F, 65.0F)
    End If

End Sub

Kommentarer

Om du vill konvertera en Point till använder PointFdu Implicit.