Graphics.DrawPolygon 方法

定义

绘制由一组 Point 结构定义的多边形。Draws a polygon defined by an array of Point structures.

重载

DrawPolygon(Pen, PointF[])

绘制由一组 PointF 结构定义的多边形。Draws a polygon defined by an array of PointF structures.

DrawPolygon(Pen, Point[])

绘制由一组 Point 结构定义的多边形。Draws a polygon defined by an array of Point structures.

DrawPolygon(Pen, PointF[])

绘制由一组 PointF 结构定义的多边形。Draws a polygon defined by an array of PointF structures.

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())

参数

pen
Pen

Pen,它确定多边形的颜色、宽度和样式。Pen that determines the color, width, and style of the polygon.

points
PointF[]

PointF 结构数组,这些结构表示多边形的顶点。Array of PointF structures that represent the vertices of the polygon.

例外

pennullpen is null.

-or- pointsnullpoints is null.

示例

下面的代码示例旨在与 Windows 窗体一起使用,并且它需要作为 PaintEventArgs e Paint 事件处理程序的参数。The following code example is designed for use with Windows Forms, and it requires PaintEventArgse, which is a parameter of the Paint event handler. 此代码执行以下操作:The code performs the following actions:

  • 创建黑色笔。Creates a black pen.

  • 为多边形的顶点创建七个点的数组。Creates an array of seven points for the vertices of the polygon.

  • 在屏幕上绘制多边形。Draws the polygon to the screen.

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

注解

数组中的两个连续点对指定多边形的一侧。Every pair of two consecutive points in the array specifies a side of the polygon. 此外,如果最后一个点和数组点的第一个点不一致,则它们指定多边形的最后一方。In addition, if the last point and the first of the array point do not coincide, they specify the last side of the polygon.

适用于

DrawPolygon(Pen, Point[])

绘制由一组 Point 结构定义的多边形。Draws a polygon defined by an array of Point structures.

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())

参数

pen
Pen

Pen,它确定多边形的颜色、宽度和样式。Pen that determines the color, width, and style of the polygon.

points
Point[]

Point 结构数组,这些结构表示多边形的顶点。Array of Point structures that represent the vertices of the polygon.

例外

pennullpen is null.

示例

下面的代码示例旨在与 Windows 窗体一起使用,并且它需要作为 PaintEventArgs e Paint 事件处理程序的参数。The following code example is designed for use with Windows Forms, and it requires PaintEventArgse, which is a parameter of the Paint event handler. 此代码执行以下操作:The code performs the following actions:

  • 创建黑色笔。Creates a black pen.

  • 为多边形的顶点创建七个点的数组。Creates an array of seven points for the vertices of the polygon.

  • 在屏幕上绘制多边形。Draws the polygon to the screen.

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

注解

数组中的两个连续点对指定多边形的一侧。Every pair of two consecutive points in the array specifies a side of the polygon. 此外,如果数组的最后一个点和第一个点不一致,则它们指定多边形的最后一方。In addition, if the last point and the first point of the array do not coincide, they specify the last side of the polygon.

适用于