Graphics.DrawPolygon Méthode

Définition

Espace de noms:

System.Drawing

Assembly:

System.Drawing.Common.dll

Paquet:

System.Drawing.Common v9.0.0-preview.7.24405.4

Dessine un polygone défini par un tableau de structures Point.

Surcharges

DrawPolygon(Pen, Point[])	Dessine un polygone défini par un tableau de structures Point.
DrawPolygon(Pen, PointF[])	Dessine un polygone défini par un tableau de structures PointF.

DrawPolygon(Pen, Point[])

Source:

Graphics.cs

Dessine un polygone défini par un tableau de structures Point.

public:
 void DrawPolygon(System::Drawing::Pen ^ pen, ... cli::array <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, ParamArray points As Point())

Paramètres

pen

Pen

Pen qui détermine la couleur, la largeur et le style du polygone.

points

Point[]

Tableau de structures Point qui représentent les sommets du polygone.

Exceptions

ArgumentNullException

pen est null.

Exemples

L’exemple de code suivant est conçu pour être utilisé avec Windows Forms et nécessite PaintEventArgse, qui est un paramètre du gestionnaire d’événements Paint. Le code effectue les actions suivantes :

• Crée un stylet noir.

• Crée un tableau de sept points pour les sommets du polygone.

• Dessine le polygone à l’écran.

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

Remarques

Chaque paire de deux points consécutifs dans le tableau spécifie un côté du polygone. En outre, si le dernier point et le premier point du tableau ne coïncident pas, ils spécifient le dernier côté du polygone.

DrawPolygon(Pen, PointF[])

Source:

Graphics.cs

Dessine un polygone défini par un tableau de structures PointF.

public:
 void DrawPolygon(System::Drawing::Pen ^ pen, ... cli::array <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, ParamArray points As PointF())

Paramètres

pen

Pen

Pen qui détermine la couleur, la largeur et le style du polygone.

points

PointF[]

Tableau de structures PointF qui représentent les sommets du polygone.

Exceptions

ArgumentNullException

pen est null.

-ou-

points est null.

Exemples

L’exemple de code suivant est conçu pour être utilisé avec Windows Forms et nécessite PaintEventArgse, qui est un paramètre du gestionnaire d’événements Paint. Le code effectue les actions suivantes :

• Crée un stylet noir.

• Crée un tableau de sept points pour les sommets du polygone.

• Dessine le polygone à l’écran.

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

Remarques

Chaque paire de deux points consécutifs dans le tableau spécifie un côté du polygone. En outre, si le dernier point et le premier du point de tableau ne coïncident pas, ils spécifient le dernier côté du polygone.