Graphics.DrawPolygon 方法

定義

命名空間:

System.Drawing

組件:

System.Drawing.Common.dll

套件:

System.Drawing.Common v8.0.0

繪製由 Point 結構陣列定義的多邊形。

多載

DrawPolygon(Pen, Point[])	繪製由 Point 結構陣列定義的多邊形。
DrawPolygon(Pen, PointF[])	繪製由 PointF 結構陣列定義的多邊形。

DrawPolygon(Pen, Point[])

來源:

Graphics.cs

繪製由 Point 結構陣列定義的多邊形。

public:
 void DrawPolygon(System::Drawing::Pen ^ pen, cli::array <System::Drawing::Point> ^ points);

public void DrawPolygon (System.Drawing.Pen pen, System.Drawing.Point[] points);

member this.DrawPolygon : System.Drawing.Pen * System.Drawing.Point[] -> unit

Public Sub DrawPolygon (pen As Pen, points As Point())

參數

pen

Pen

Pen，決定多邊形的色彩、寬度和樣式。

points

Point[]

Point 結構的陣列，表示多邊形的頂點。

例外狀況

ArgumentNullException

pen 為 null。

範例

下列程式代碼範例是設計來搭配 Windows Forms 使用，而且需要 PaintEventArgse，這是事件處理程序的參數Paint。 此程式碼會執行下列動作：

• 建立黑色畫筆。

• 建立多邊形頂點的七點陣列。

• 將多邊形繪製到螢幕。

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

備註

陣列中每對兩個連續點都會指定多邊形的側邊。 此外，如果陣列的最後一個點和第一個點不一致，它們就會指定多邊形的最後一邊。

DrawPolygon(Pen, PointF[])

來源:

Graphics.cs

繪製由 PointF 結構陣列定義的多邊形。

public:
 void DrawPolygon(System::Drawing::Pen ^ pen, cli::array <System::Drawing::PointF> ^ points);

public void DrawPolygon (System.Drawing.Pen pen, System.Drawing.PointF[] points);

member this.DrawPolygon : System.Drawing.Pen * System.Drawing.PointF[] -> unit

Public Sub DrawPolygon (pen As Pen, points As PointF())

參數

pen

Pen

Pen，決定多邊形的色彩、寬度和樣式。

points

PointF[]

PointF 結構的陣列，表示多邊形的頂點。

例外狀況

ArgumentNullException

pen 為 null。

-或-

points 為 null。

範例

下列程式代碼範例是設計來搭配 Windows Forms 使用，而且需要 PaintEventArgse，這是事件處理程序的參數Paint。 此程式碼會執行下列動作：

• 建立黑色畫筆。

• 建立多邊形頂點的七點陣列。

• 將多邊形繪製到螢幕。

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

備註

陣列中每對兩個連續點都會指定多邊形的側邊。 此外，如果陣列點的最後一個點和第一個點不一致，它們就會指定多邊形的最後一邊。