GraphicsPath.GetBounds Method

Definition

Namespace:

System.Drawing.Drawing2D

Assembly:

System.Drawing.Common.dll

Returns a rectangle that bounds this GraphicsPath.

Overloads

GetBounds()	Returns a rectangle that bounds this GraphicsPath.
GetBounds(Matrix)	Returns a rectangle that bounds this GraphicsPath when this path is transformed by the specified Matrix.
GetBounds(Matrix, Pen)	Returns a rectangle that bounds this GraphicsPath when the current path is transformed by the specified Matrix and drawn with the specified Pen.

GetBounds()

Returns a rectangle that bounds this GraphicsPath.

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

public System.Drawing.RectangleF GetBounds ();

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

Public Function GetBounds () As RectangleF

Returns

RectangleF

A RectangleF that represents a rectangle that bounds this GraphicsPath.

Examples

The following code example is designed for use with Windows Forms, and it requires PaintEventArgs e, an OnPaint event object. The code performs the following actions:

• Creates a graphics path.

• Adds an ellipse (circle) to it and draws it to the screen.

• Retrieves the bounding rectangle for the circle with a call to GetBounds and draws the rectangle to the screen.

• Creates a second graphics path.

• Adds a circle and widens the path to a width of 10.

• Draws the path to the screen.

• Retrieves the bounding rectangle for the second circle.

• Draws the bounding rectangle to the screen.

• Displays the rectangle size in a dialog box.

Notice that the bounding rectangle on the right is larger (to account for the extra width of the line).

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

Remarks

The size of the returned bounding rectangle is influenced by the type of end caps, pen width, and pen miter limit, and therefore produces a "loose fit" to the bounded path. The approximate formula is: the initial bounding rectangle is inflated by pen width, and this result is multiplied by the miter limit, plus some additional margin to allow for end caps.

GetBounds(Matrix)

Returns a rectangle that bounds this GraphicsPath when this path is transformed by the specified 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

Parameters

matrix

Matrix

The Matrix that specifies a transformation to be applied to this path before the bounding rectangle is calculated. This path is not permanently transformed; the transformation is used only during the process of calculating the bounding rectangle.

Returns

RectangleF

A RectangleF that represents a rectangle that bounds this GraphicsPath.

Examples

For an example, see GetBounds().

Remarks

The size of the returned bounding rectangle is influenced by the type of end caps, pen width, and pen miter limit, and therefore produces a "loose fit" to the bounded path. The approximate formula is: the initial bounding rectangle is inflated by pen width, and this result is multiplied by the miter limit, plus some additional margin to allow for end caps.

GetBounds(Matrix, Pen)

Returns a rectangle that bounds this GraphicsPath when the current path is transformed by the specified Matrix and drawn with the specified 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

Parameters

matrix

Matrix

The Matrix that specifies a transformation to be applied to this path before the bounding rectangle is calculated. This path is not permanently transformed; the transformation is used only during the process of calculating the bounding rectangle.

pen

Pen

The Pen with which to draw the GraphicsPath.

Returns

RectangleF

A RectangleF that represents a rectangle that bounds this GraphicsPath.

Examples

For an example, see GetBounds().

Remarks

The size of the returned bounding rectangle is influenced by the type of end caps, pen width, and pen miter limit, and therefore produces a "loose fit" to the bounded path. The approximate formula is: the initial bounding rectangle is inflated by pen width, and this result is multiplied by the miter limit, plus some additional margin to allow for end caps.