Graphics.DrawPolygon Metoda

Definice

Vykreslí mnohoúhelník definovaný polem Point struktur.

Přetížení

DrawPolygon(Pen, Point[])

Vykreslí mnohoúhelník definovaný polem Point struktur.

DrawPolygon(Pen, PointF[])

Vykreslí mnohoúhelník definovaný polem PointF struktur.

DrawPolygon(Pen, ReadOnlySpan<Point>)
DrawPolygon(Pen, ReadOnlySpan<PointF>)

DrawPolygon(Pen, Point[])

Zdroj:
Graphics.cs
Zdroj:
Graphics.cs
Zdroj:
Graphics.cs

Vykreslí mnohoúhelník definovaný polem Point struktur.

public:
 void DrawPolygon(System::Drawing::Pen ^ pen, cli::array <System::Drawing::Point> ^ points);
public:
 void DrawPolygon(System::Drawing::Pen ^ pen, ... cli::array <System::Drawing::Point> ^ points);
public void DrawPolygon (System.Drawing.Pen pen, System.Drawing.Point[] points);
public void DrawPolygon (System.Drawing.Pen pen, params System.Drawing.Point[] points);
member this.DrawPolygon : System.Drawing.Pen * System.Drawing.Point[] -> unit
Public Sub DrawPolygon (pen As Pen, points As Point())
Public Sub DrawPolygon (pen As Pen, ParamArray points As Point())

Parametry

pen
Pen

Pen určuje barvu, šířku a styl mnohoúhelníku.

points
Point[]

Point Pole struktur, které představují vrcholy mnohoúhelníku.

Výjimky

pen je null.

Příklady

Následující příklad kódu je určen pro použití s model Windows Forms a vyžaduje PaintEventArgse, což je parametr obslužné rutiny Paint události. Kód provede následující akce:

  • Vytvoří černé pero.

  • Vytvoří pole sedmi bodů pro vrcholy mnohoúhelníku.

  • Nakreslí mnohoúhelník na obrazovku.

public:
   void DrawPolygonPoint( PaintEventArgs^ e )
   {
      // Create pen.
      Pen^ blackPen = gcnew Pen( Color::Black,3.0f );

      // Create points that define polygon.
      Point point1 = Point(50,50);
      Point point2 = Point(100,25);
      Point point3 = Point(200,5);
      Point point4 = Point(250,50);
      Point point5 = Point(300,100);
      Point point6 = Point(350,200);
      Point point7 = Point(250,250);
      array<Point>^ curvePoints = {point1,point2,point3,point4,point5,point6,point7};

      // Draw polygon to screen.
      e->Graphics->DrawPolygon( blackPen, curvePoints );
   }
public void DrawPolygonPoint(PaintEventArgs e)
{
             
    // Create pen.
    Pen blackPen = new Pen(Color.Black, 3);
             
    // Create points that define polygon.
    Point point1 = new Point(50,  50);
    Point point2 = new Point(100,  25);
    Point point3 = new Point(200,   5);
    Point point4 = new Point(250,  50);
    Point point5 = new Point(300, 100);
    Point point6 = new Point(350, 200);
    Point point7 = new Point(250, 250);
    Point[] curvePoints =
             {
                 point1,
                 point2,
                 point3,
                 point4,
                 point5,
                 point6,
                 point7
             };
             
    // Draw polygon to screen.
    e.Graphics.DrawPolygon(blackPen, curvePoints);
}
Public Sub DrawPolygonPoint(ByVal e As PaintEventArgs)

    ' Create pen.
    Dim blackPen As New Pen(Color.Black, 3)

    ' Create points that define polygon.
    Dim point1 As New Point(50, 50)
    Dim point2 As New Point(100, 25)
    Dim point3 As New Point(200, 5)
    Dim point4 As New Point(250, 50)
    Dim point5 As New Point(300, 100)
    Dim point6 As New Point(350, 200)
    Dim point7 As New Point(250, 250)
    Dim curvePoints As Point() = {point1, point2, point3, point4, _
    point5, point6, point7}

    ' Draw polygon to screen.
    e.Graphics.DrawPolygon(blackPen, curvePoints)
End Sub

Poznámky

Každá dvojice dvou po sobě jdoucích bodů v poli určuje stranu mnohoúhelníku. Kromě toho, pokud se poslední bod a první bod pole neshodují, určí poslední stranu mnohoúhelníku.

Platí pro

DrawPolygon(Pen, PointF[])

Zdroj:
Graphics.cs
Zdroj:
Graphics.cs
Zdroj:
Graphics.cs

Vykreslí mnohoúhelník definovaný polem PointF struktur.

public:
 void DrawPolygon(System::Drawing::Pen ^ pen, cli::array <System::Drawing::PointF> ^ points);
public:
 void DrawPolygon(System::Drawing::Pen ^ pen, ... cli::array <System::Drawing::PointF> ^ points);
public void DrawPolygon (System.Drawing.Pen pen, System.Drawing.PointF[] points);
public void DrawPolygon (System.Drawing.Pen pen, params System.Drawing.PointF[] points);
member this.DrawPolygon : System.Drawing.Pen * System.Drawing.PointF[] -> unit
Public Sub DrawPolygon (pen As Pen, points As PointF())
Public Sub DrawPolygon (pen As Pen, ParamArray points As PointF())

Parametry

pen
Pen

Pen určuje barvu, šířku a styl mnohoúhelníku.

points
PointF[]

PointF Pole struktur, které představují vrcholy mnohoúhelníku.

Výjimky

pen je null.

-nebo-

points je null.

Příklady

Následující příklad kódu je určen pro použití s model Windows Forms a vyžaduje PaintEventArgse, což je parametr obslužné rutiny Paint události. Kód provede následující akce:

  • Vytvoří černé pero.

  • Vytvoří pole sedmi bodů pro vrcholy mnohoúhelníku.

  • Nakreslí mnohoúhelník na obrazovku.

public:
   void DrawPolygonPointF( PaintEventArgs^ e )
   {
      // Create pen.
      Pen^ blackPen = gcnew Pen( Color::Black,3.0f );

      // Create points that define polygon.
      PointF point1 = PointF(50.0F,50.0F);
      PointF point2 = PointF(100.0F,25.0F);
      PointF point3 = PointF(200.0F,5.0F);
      PointF point4 = PointF(250.0F,50.0F);
      PointF point5 = PointF(300.0F,100.0F);
      PointF point6 = PointF(350.0F,200.0F);
      PointF point7 = PointF(250.0F,250.0F);
      array<PointF>^ curvePoints = {point1,point2,point3,point4,point5,point6,point7};

      // Draw polygon curve to screen.
      e->Graphics->DrawPolygon( blackPen, curvePoints );
   }
public void DrawPolygonPointF(PaintEventArgs e)
{
             
    // Create pen.
    Pen blackPen = new Pen(Color.Black, 3);
             
    // Create points that define polygon.
    PointF point1 = new PointF(50.0F,  50.0F);
    PointF point2 = new PointF(100.0F,  25.0F);
    PointF point3 = new PointF(200.0F,   5.0F);
    PointF point4 = new PointF(250.0F,  50.0F);
    PointF point5 = new PointF(300.0F, 100.0F);
    PointF point6 = new PointF(350.0F, 200.0F);
    PointF point7 = new PointF(250.0F, 250.0F);
    PointF[] curvePoints =
             {
                 point1,
                 point2,
                 point3,
                 point4,
                 point5,
                 point6,
                 point7
             };
             
    // Draw polygon curve to screen.
    e.Graphics.DrawPolygon(blackPen, curvePoints);
}
Public Sub DrawPolygonPointF(ByVal e As PaintEventArgs)

    ' Create pen.
    Dim blackPen As New Pen(Color.Black, 3)

    ' Create points that define polygon.
    Dim point1 As New PointF(50.0F, 50.0F)
    Dim point2 As New PointF(100.0F, 25.0F)
    Dim point3 As New PointF(200.0F, 5.0F)
    Dim point4 As New PointF(250.0F, 50.0F)
    Dim point5 As New PointF(300.0F, 100.0F)
    Dim point6 As New PointF(350.0F, 200.0F)
    Dim point7 As New PointF(250.0F, 250.0F)
    Dim curvePoints As PointF() = {point1, point2, point3, point4, _
    point5, point6, point7}

    ' Draw polygon curve to screen.
    e.Graphics.DrawPolygon(blackPen, curvePoints)
End Sub

Poznámky

Každá dvojice dvou po sobě jdoucích bodů v poli určuje stranu mnohoúhelníku. Kromě toho, pokud se poslední bod a první z maticového bodu neshodují, určí poslední stranu mnohoúhelníku.

Platí pro

DrawPolygon(Pen, ReadOnlySpan<Point>)

Zdroj:
Graphics.cs
public:
 void DrawPolygon(System::Drawing::Pen ^ pen, ReadOnlySpan<System::Drawing::Point> points);
public void DrawPolygon (System.Drawing.Pen pen, ReadOnlySpan<System.Drawing.Point> points);
member this.DrawPolygon : System.Drawing.Pen * ReadOnlySpan<System.Drawing.Point> -> unit
Public Sub DrawPolygon (pen As Pen, points As ReadOnlySpan(Of Point))

Parametry

pen
Pen

Platí pro

DrawPolygon(Pen, ReadOnlySpan<PointF>)

Zdroj:
Graphics.cs
public:
 void DrawPolygon(System::Drawing::Pen ^ pen, ReadOnlySpan<System::Drawing::PointF> points);
public void DrawPolygon (System.Drawing.Pen pen, ReadOnlySpan<System.Drawing.PointF> points);
member this.DrawPolygon : System.Drawing.Pen * ReadOnlySpan<System.Drawing.PointF> -> unit
Public Sub DrawPolygon (pen As Pen, points As ReadOnlySpan(Of PointF))

Parametry

pen
Pen

Platí pro