GraphicsPath.GetBounds 方法

Source:

GraphicsPath.cs

Source:

GraphicsPath.cs

Source:

GraphicsPath.cs

Source:

GraphicsPath.cs

Source:

GraphicsPath.cs

public:
 System::Drawing::RectangleF GetBounds();

public System.Drawing.RectangleF GetBounds ();

member this.GetBounds : unit -> System.Drawing.RectangleF

Public Function GetBounds () As RectangleF

返回

一个表示此 GraphicsPath的矩形的 RectangleF。

示例

下面的代码示例旨在与 Windows 窗体一起使用，它需要 PaintEventArgseOnPaint 事件对象。 该代码执行以下操作：

• 创建图形路径。

• 向它添加椭圆（圆圈），并将其绘制到屏幕。

• 使用调用 GetBounds 检索圆的边界矩形，并将矩形绘制到屏幕。

• 创建第二个图形路径。

• 添加一个圆，并将路径加宽为 10。

• 绘制屏幕的路径。

• 检索第二个圆的边界矩形。

• 将边框绘制到屏幕。

• 在对话框中显示矩形大小。

请注意，右侧的边界矩形较大（以考虑线条的额外宽度）。

public:
   void GetBoundsExample( PaintEventArgs^ e )
   {
      // Create path number 1 and a Pen for drawing.
      GraphicsPath^ myPath = gcnew GraphicsPath;
      Pen^ pathPen = gcnew Pen( Color::Black,1.0f );

      // Add an Ellipse to the path and Draw it (circle in start
      // position).
      myPath->AddEllipse( 20, 20, 100, 100 );
      e->Graphics->DrawPath( pathPen, myPath );

      // Get the path bounds for Path number 1 and draw them.
      RectangleF boundRect = myPath->GetBounds();
      e->Graphics->DrawRectangle( gcnew Pen( Color::Red,1.0f ), boundRect.X, boundRect.Y, boundRect.Height, boundRect.Width );

      // Create a second graphics path and a wider Pen.
      GraphicsPath^ myPath2 = gcnew GraphicsPath;
      Pen^ pathPen2 = gcnew Pen( Color::Black,10.0f );

      // Create a new ellipse with a width of 10.
      myPath2->AddEllipse( 150, 20, 100, 100 );
      myPath2->Widen( pathPen2 );
      e->Graphics->FillPath( Brushes::Black, myPath2 );

      // Get the second path bounds.
      RectangleF boundRect2 = myPath2->GetBounds();

      // Draw the bounding rectangle.
      e->Graphics->DrawRectangle( gcnew Pen( Color::Red,1.0f ), boundRect2.X, boundRect2.Y, boundRect2.Height, boundRect2.Width );

      // Display the rectangle size.
      MessageBox::Show( boundRect2.ToString() );
   }

public void GetBoundsExample(PaintEventArgs e)
{
             
    // Create path number 1 and a Pen for drawing.
    GraphicsPath myPath = new GraphicsPath();
    Pen pathPen = new Pen(Color.Black, 1);
             
    // Add an Ellipse to the path and Draw it (circle in start
             
    // position).
    myPath.AddEllipse(20, 20, 100, 100);
    e.Graphics.DrawPath(pathPen, myPath);
             
    // Get the path bounds for Path number 1 and draw them.
    RectangleF boundRect = myPath.GetBounds();
    e.Graphics.DrawRectangle(new Pen(Color.Red, 1),
        boundRect.X,
        boundRect.Y,
        boundRect.Height,
        boundRect.Width);
             
    // Create a second graphics path and a wider Pen.
    GraphicsPath myPath2 = new GraphicsPath();
    Pen pathPen2 = new Pen(Color.Black, 10);
             
    // Create a new ellipse with a width of 10.
    myPath2.AddEllipse(150, 20, 100, 100);
    myPath2.Widen(pathPen2);
    e.Graphics.FillPath(Brushes.Black, myPath2);
             
    // Get the second path bounds.
    RectangleF boundRect2 = myPath2.GetBounds();
             
    // Draw the bounding rectangle.
    e.Graphics.DrawRectangle(new Pen(Color.Red, 1),
        boundRect2.X,
        boundRect2.Y,
        boundRect2.Height,
        boundRect2.Width);
             
    // Display the rectangle size.
    MessageBox.Show(boundRect2.ToString());
}

Public Sub GetBoundsExample(ByVal e As PaintEventArgs)

    ' Create path number 1 and a Pen for drawing.
    Dim myPath As New GraphicsPath
    Dim pathPen As New Pen(Color.Black, 1)

    ' Add an Ellipse to the path and Draw it (circle in start

    ' position).
    myPath.AddEllipse(20, 20, 100, 100)
    e.Graphics.DrawPath(pathPen, myPath)

    ' Get the path bounds for Path number 1 and draw them.
    Dim boundRect As RectangleF = myPath.GetBounds()
    e.Graphics.DrawRectangle(New Pen(Color.Red, 1), boundRect.X, _
    boundRect.Y, boundRect.Height, boundRect.Width)

    ' Create a second graphics path and a wider Pen.
    Dim myPath2 As New GraphicsPath
    Dim pathPen2 As New Pen(Color.Black, 10)

    ' Create a new ellipse with a width of 10.
    myPath2.AddEllipse(150, 20, 100, 100)
    myPath2.Widen(pathPen2)
    e.Graphics.FillPath(Brushes.Black, myPath2)

    ' Get the second path bounds.
    Dim boundRect2 As RectangleF = myPath2.GetBounds()

    ' Show the bounds in a message box.
    e.Graphics.DrawString("Rectangle2 Bounds: " + _
    boundRect2.ToString(), New Font("Arial", 8), Brushes.Black, _
    20, 150)

    ' Draw the bounding rectangle.
    e.Graphics.DrawRectangle(New Pen(Color.Red, 1), boundRect2.X, _
    boundRect2.Y, boundRect2.Height, boundRect2.Width)
End Sub

注解

返回的边界矩形的大小受结束帽、笔宽和笔 miter 限制的类型的影响，因此会生成一个“松散的拟合”到边界路径。 近似公式是：初始边界矩形由笔宽膨胀，此结果乘以 miter 限制，外加一些额外的边距以允许结束上限。

Source:

GraphicsPath.cs

Source:

GraphicsPath.cs

Source:

GraphicsPath.cs

Source:

GraphicsPath.cs

Source:

GraphicsPath.cs

public:
 System::Drawing::RectangleF GetBounds(System::Drawing::Drawing2D::Matrix ^ matrix);

public System.Drawing.RectangleF GetBounds (System.Drawing.Drawing2D.Matrix? matrix);

public System.Drawing.RectangleF GetBounds (System.Drawing.Drawing2D.Matrix matrix);

member this.GetBounds : System.Drawing.Drawing2D.Matrix -> System.Drawing.RectangleF

Public Function GetBounds (matrix As Matrix) As RectangleF

参数

返回

一个表示此 GraphicsPath的矩形的 RectangleF。

示例

有关示例，请参阅 GetBounds()。

注解

返回的边界矩形的大小受结束帽、笔宽和笔 miter 限制的类型的影响，因此会生成一个“松散的拟合”到边界路径。 近似公式是：初始边界矩形由笔宽膨胀，此结果乘以 miter 限制，外加一些额外的边距以允许结束上限。

Source:

GraphicsPath.cs

Source:

GraphicsPath.cs

Source:

GraphicsPath.cs

Source:

GraphicsPath.cs

Source:

GraphicsPath.cs

public:
 System::Drawing::RectangleF GetBounds(System::Drawing::Drawing2D::Matrix ^ matrix, System::Drawing::Pen ^ pen);

public System.Drawing.RectangleF GetBounds (System.Drawing.Drawing2D.Matrix? matrix, System.Drawing.Pen? pen);

public System.Drawing.RectangleF GetBounds (System.Drawing.Drawing2D.Matrix matrix, System.Drawing.Pen pen);

member this.GetBounds : System.Drawing.Drawing2D.Matrix * System.Drawing.Pen -> System.Drawing.RectangleF

Public Function GetBounds (matrix As Matrix, pen As Pen) As RectangleF

参数

返回

一个表示此 GraphicsPath的矩形的 RectangleF。

示例

有关示例，请参阅 GetBounds()。

注解

返回的边界矩形的大小受结束帽、笔宽和笔 miter 限制的类型的影响，因此会生成一个“松散的拟合”到边界路径。 近似公式是：初始边界矩形由笔宽膨胀，此结果乘以 miter 限制，外加一些额外的边距以允许结束上限。