GdPicture.NET.14~GdPicture14.GdPicturePDF_methods - DrawEllipse Method (GdPicturePDF)

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration

 

Public Function DrawEllipse( _

   ByVal CenterX As Single, _

   ByVal CenterY As Single, _

   ByVal Width As Single, _

   ByVal Height As Single, _

   ByVal Fill As Boolean, _

   ByVal Stroke As Boolean _

) As GdPictureStatus

public GdPictureStatus DrawEllipse( 

   float CenterX,

   float CenterY,

   float Width,

   float Height,

   bool Fill,

   bool Stroke

)

public function DrawEllipse( 

    CenterX: Single;

    CenterY: Single;

    Width: Single;

    Height: Single;

    Fill: Boolean;

    Stroke: Boolean

): GdPictureStatus;

public function DrawEllipse( 

   CenterX : float,

   CenterY : float,

   Width : float,

   Height : float,

   Fill : boolean,

   Stroke : boolean

) : GdPictureStatus;

public: GdPictureStatus DrawEllipse( 

   float CenterX,

   float CenterY,

   float Width,

   float Height,

   bool Fill,

   bool Stroke

)

public:

GdPictureStatus DrawEllipse( 

   float CenterX,

   float CenterY,

   float Width,

   float Height,

   bool Fill,

   bool Stroke

)

Parameters

CenterX: The horizontal (X) coordinate of the ellipse's center, expressed in the current units specified by the SetMeasurementUnit method with respect to the defined origin, related to the currently selected page.
CenterY: The vertical (Y) coordinate of the ellipse's center, expressed in the current units specified by the SetMeasurementUnit method with respect to the defined origin, related to the currently selected page.
Width: The width of the ellipse's bounding box, expressed in the current units specified by the SetMeasurementUnit method.
Height: The height of the ellipse's bounding box, expressed in the current units specified by the SetMeasurementUnit method.
Fill: Set this parameter to true, if you want to fill the ellipse using the currently defined fill color, otherwise set it to false. You can set the fill color using the SetFillColor(Byte,Byte,Byte) method.
Stroke: Set this parameter to true, if you want to stroke the ellipse (draw a boundary line along the rectangle) using the currently defined line color, otherwise set it to false. You can set the line color using the SetLineColor(Byte,Byte,Byte) method.

Return Value

A member of the GdPictureStatus enumeration. If the method has been successfully followed, then the return value is GdPictureStatus.OK.

We strongly recommend always checking this status first.

This method is only allowed for use with non-encrypted documents.

Just to remind you that the center of the ellipse is the center of its bounding box.

How to draw stroked and filled ellipses.

The first example shows you reasonable combinations of the Fill and the Stroke parameters.

VB.NET
C#

Dim caption As String = "Example: DrawEllipse"

Dim gdpicturePDF As New GdPicturePDF()

Dim status As GdPictureStatus = gdpicturePDF.NewPDF()

If status = GdPictureStatus.OK Then

    gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopLeft)

    gdpicturePDF.SetMeasurementUnit(PdfMeasurementUnit.PdfMeasurementUnitCentimeter)

    If (gdpicturePDF.NewPage(PdfPageSizes.PdfPageSizeA4) = GdPictureStatus.OK) AndAlso

       (gdpicturePDF.SetLineColor(255, 140, 0) = GdPictureStatus.OK) AndAlso 'the color used to stroke the ellipses

       (gdpicturePDF.SetLineWidth(0.2F) = GdPictureStatus.OK) AndAlso 'the line width used to stroke

       (gdpicturePDF.SetFillColor(153, 50, 204) = GdPictureStatus.OK) AndAlso 'the color used to fill the ellipses

       (gdpicturePDF.DrawEllipse(10, 15, 16, 24, False, True) = GdPictureStatus.OK) AndAlso

       (gdpicturePDF.DrawEllipse(10, 15, 12, 20, True, True) = GdPictureStatus.OK) AndAlso

       (gdpicturePDF.SetFillColor(255, 255, 0) = GdPictureStatus.OK) AndAlso

       (gdpicturePDF.DrawEllipse(10, 15, 6, 12, True, False) = GdPictureStatus.OK) Then

        status = gdpicturePDF.SaveToFile("test_DrawEllipse1.pdf")

        If status = GdPictureStatus.OK Then

            MessageBox.Show("The example has been followed successfully and the file has been saved.", caption)

        Else

            MessageBox.Show("The example has been followed successfully, but the file can't be saved. Status: " + status.ToString(), caption)

        End If

    Else

        MessageBox.Show("The example has not been followed successfully." + vbCrLf + "The last known status is " + gdpicturePDF.GetStat().ToString(), caption)

    End If

Else

    MessageBox.Show("The NewPDF() method has failed with the status: " + status.ToString(), caption)

End If

gdpicturePDF.Dispose()

string caption = "Example: DrawEllipse";

GdPicturePDF gdpicturePDF = new GdPicturePDF();

GdPictureStatus status = gdpicturePDF.NewPDF();

if (status == GdPictureStatus.OK)

{

    gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopLeft);

    gdpicturePDF.SetMeasurementUnit(PdfMeasurementUnit.PdfMeasurementUnitCentimeter);

    if ((gdpicturePDF.NewPage(PdfPageSizes.PdfPageSizeA4) == GdPictureStatus.OK) &&

        (gdpicturePDF.SetLineColor(255, 140, 0) == GdPictureStatus.OK) && //the color used to stroke the ellipses

        (gdpicturePDF.SetLineWidth(0.2f) == GdPictureStatus.OK) && //the line width used to stroke

        (gdpicturePDF.SetFillColor(153, 50, 204) == GdPictureStatus.OK) && //the color used to fill the ellipses

        (gdpicturePDF.DrawEllipse(10, 15, 16, 24, false, true) == GdPictureStatus.OK) &&

        (gdpicturePDF.DrawEllipse(10, 15, 12, 20, true, true) == GdPictureStatus.OK) &&

        (gdpicturePDF.SetFillColor(255, 255, 0) == GdPictureStatus.OK) &&

        (gdpicturePDF.DrawEllipse(10, 15, 6, 12, true, false) == GdPictureStatus.OK))

    {

        status = gdpicturePDF.SaveToFile("test_DrawEllipse1.pdf");

        if (status == GdPictureStatus.OK)

            MessageBox.Show("The example has been followed successfully and the file has been saved.", caption);

        else

            MessageBox.Show("The example has been followed successfully, but the file can't be saved. Status: " + status.ToString(), caption);

    }

    else

        MessageBox.Show("The example has not been followed successfully.\nThe last known status is " + gdpicturePDF.GetStat().ToString(), caption);

}

else

    MessageBox.Show("The NewPDF() method has failed with the status: " + status.ToString(), caption);

gdpicturePDF.Dispose();

The second example shows you how the location of the document's origin affects drawing.

VB.NET
C#

Dim caption As String = "Example: DrawEllipse"

Dim gdpicturePDF As New GdPicturePDF()

If gdpicturePDF.NewPDF() <> GdPictureStatus.OK Then

    MessageBox.Show("The NewPDF() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)

    GoTo [error]

End If

            

gdpicturePDF.SetMeasurementUnit(PdfMeasurementUnit.PdfMeasurementUnitMillimeter)

gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopLeft)

            

If gdpicturePDF.NewPage(210, 297) <> GdPictureStatus.OK Then

    MessageBox.Show("The NewPage() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)

    GoTo [error]

End If

If (gdpicturePDF.SetFillAlpha(180) <> GdPictureStatus.OK) OrElse

   (gdpicturePDF.SetFillColor(255, 0, 0) <> GdPictureStatus.OK) OrElse

   (gdpicturePDF.DrawEllipse(100, 150, 180, 60, True, False) <> GdPictureStatus.OK) Then

    MessageBox.Show("Drawing the first ellipse has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)

    GoTo [error]

End If

            

gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginBottomLeft)

If (gdpicturePDF.SetFillColor(0, 0, 255) <> GdPictureStatus.OK) OrElse

   (gdpicturePDF.DrawEllipse(100, 150, 180, 60, True, False) <> GdPictureStatus.OK) Then

    MessageBox.Show("Drawing the second ellipse has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)

    GoTo [error]

End If

            

gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopRight)

If (gdpicturePDF.SetFillColor(138, 43, 226) <> GdPictureStatus.OK) OrElse

   (gdpicturePDF.DrawEllipse(100, 150, 180, 60, True, False) <> GdPictureStatus.OK) Then

    MessageBox.Show("Drawing the third ellipse has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)

    GoTo [error]

End If

            

gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginBottomRight)

If (gdpicturePDF.SetFillColor(255, 228, 196) <> GdPictureStatus.OK) OrElse

   (gdpicturePDF.DrawEllipse(100, 150, 180, 60, True, False) <> GdPictureStatus.OK) Then

    MessageBox.Show("Drawing the fourth ellipse has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)

    GoTo [error]

End If

            

Dim status As GdPictureStatus = gdpicturePDF.SaveToFile("test_DrawEllipse2.pdf")

If status = GdPictureStatus.OK Then

    MessageBox.Show("The example has been followed successfully and the file has been saved.", caption)

Else

    MessageBox.Show("The example has been followed successfully, but the file can't be saved. Status: " + status.ToString(), caption)

End If

[error]:

gdpicturePDF.Dispose()

string caption = "Example: DrawEllipse";

GdPicturePDF gdpicturePDF = new GdPicturePDF();

if (gdpicturePDF.NewPDF() != GdPictureStatus.OK)

{

    MessageBox.Show("The NewPDF() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);

    goto error;

}

            

gdpicturePDF.SetMeasurementUnit(PdfMeasurementUnit.PdfMeasurementUnitMillimeter);

gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopLeft);

            

if (gdpicturePDF.NewPage(210, 297) != GdPictureStatus.OK)

{

    MessageBox.Show("The NewPage() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);

    goto error;

}

if ((gdpicturePDF.SetFillAlpha(180) != GdPictureStatus.OK) ||

    (gdpicturePDF.SetFillColor(255, 0, 0) != GdPictureStatus.OK) ||

    (gdpicturePDF.DrawEllipse(100, 150, 180, 60, true, false) != GdPictureStatus.OK))

{

    MessageBox.Show("Drawing the first ellipse has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);

    goto error;

}

            

gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginBottomLeft);

if ((gdpicturePDF.SetFillColor(0, 0, 255) != GdPictureStatus.OK) ||

    (gdpicturePDF.DrawEllipse(100, 150, 180, 60, true, false) != GdPictureStatus.OK))

{

    MessageBox.Show("Drawing the second ellipse has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);

    goto error;

}

            

gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopRight);

if ((gdpicturePDF.SetFillColor(138, 43, 226) != GdPictureStatus.OK) ||

    (gdpicturePDF.DrawEllipse(100, 150, 180, 60, true, false) != GdPictureStatus.OK))

{

    MessageBox.Show("Drawing the third ellipse has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);

    goto error;

}

            

gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginBottomRight);

if ((gdpicturePDF.SetFillColor(255, 228, 196) != GdPictureStatus.OK) ||

    (gdpicturePDF.DrawEllipse(100, 150, 180, 60, true, false) != GdPictureStatus.OK))

{

    MessageBox.Show("Drawing the fourth ellipse has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);

    goto error;

}

            

GdPictureStatus status = gdpicturePDF.SaveToFile("test_DrawEllipse2.pdf");

if (status == GdPictureStatus.OK)

    MessageBox.Show("The example has been followed successfully and the file has been saved.", caption);

else

    MessageBox.Show("The example has been followed successfully, but the file can't be saved. Status: " + status.ToString(), caption);

            

error:

gdpicturePDF.Dispose();

How to draw stroked and filled ellipses. Dim caption As String = "Example: DrawEllipse" Dim gdpicturePDF As New GdPicturePDF() Dim status As GdPictureStatus = gdpicturePDF.NewPDF() If status = GdPictureStatus.OK Then gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopLeft) gdpicturePDF.SetMeasurementUnit(PdfMeasurementUnit.PdfMeasurementUnitCentimeter) If (gdpicturePDF.NewPage(PdfPageSizes.PdfPageSizeA4) = GdPictureStatus.OK) AndAlso (gdpicturePDF.SetLineColor(255, 140, 0) = GdPictureStatus.OK) AndAlso 'the color used to stroke the ellipses (gdpicturePDF.SetLineWidth(0.2F) = GdPictureStatus.OK) AndAlso 'the line width used to stroke (gdpicturePDF.SetFillColor(153, 50, 204) = GdPictureStatus.OK) AndAlso 'the color used to fill the ellipses (gdpicturePDF.DrawEllipse(10, 15, 16, 24, False, True) = GdPictureStatus.OK) AndAlso (gdpicturePDF.DrawEllipse(10, 15, 12, 20, True, True) = GdPictureStatus.OK) AndAlso (gdpicturePDF.SetFillColor(255, 255, 0) = GdPictureStatus.OK) AndAlso (gdpicturePDF.DrawEllipse(10, 15, 6, 12, True, False) = GdPictureStatus.OK) Then status = gdpicturePDF.SaveToFile("test_DrawEllipse1.pdf") If status = GdPictureStatus.OK Then MessageBox.Show("The example has been followed successfully and the file has been saved.", caption) Else MessageBox.Show("The example has been followed successfully, but the file can't be saved. Status: " + status.ToString(), caption) End If Else MessageBox.Show("The example has not been followed successfully." + vbCrLf + "The last known status is " + gdpicturePDF.GetStat().ToString(), caption) End If Else MessageBox.Show("The NewPDF() method has failed with the status: " + status.ToString(), caption) End If gdpicturePDF.Dispose() string caption = "Example: DrawEllipse"; GdPicturePDF gdpicturePDF = new GdPicturePDF(); GdPictureStatus status = gdpicturePDF.NewPDF(); if (status == GdPictureStatus.OK) { gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopLeft); gdpicturePDF.SetMeasurementUnit(PdfMeasurementUnit.PdfMeasurementUnitCentimeter); if ((gdpicturePDF.NewPage(PdfPageSizes.PdfPageSizeA4) == GdPictureStatus.OK) && (gdpicturePDF.SetLineColor(255, 140, 0) == GdPictureStatus.OK) && //the color used to stroke the ellipses (gdpicturePDF.SetLineWidth(0.2f) == GdPictureStatus.OK) && //the line width used to stroke (gdpicturePDF.SetFillColor(153, 50, 204) == GdPictureStatus.OK) && //the color used to fill the ellipses (gdpicturePDF.DrawEllipse(10, 15, 16, 24, false, true) == GdPictureStatus.OK) && (gdpicturePDF.DrawEllipse(10, 15, 12, 20, true, true) == GdPictureStatus.OK) && (gdpicturePDF.SetFillColor(255, 255, 0) == GdPictureStatus.OK) && (gdpicturePDF.DrawEllipse(10, 15, 6, 12, true, false) == GdPictureStatus.OK)) { status = gdpicturePDF.SaveToFile("test_DrawEllipse1.pdf"); if (status == GdPictureStatus.OK) MessageBox.Show("The example has been followed successfully and the file has been saved.", caption); else MessageBox.Show("The example has been followed successfully, but the file can't be saved. Status: " + status.ToString(), caption); } else MessageBox.Show("The example has not been followed successfully.\nThe last known status is " + gdpicturePDF.GetStat().ToString(), caption); } else MessageBox.Show("The NewPDF() method has failed with the status: " + status.ToString(), caption); gdpicturePDF.Dispose(); Dim caption As String = "Example: DrawEllipse" Dim gdpicturePDF As New GdPicturePDF() If gdpicturePDF.NewPDF() <> GdPictureStatus.OK Then MessageBox.Show("The NewPDF() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption) GoTo [error] End If gdpicturePDF.SetMeasurementUnit(PdfMeasurementUnit.PdfMeasurementUnitMillimeter) gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopLeft) If gdpicturePDF.NewPage(210, 297) <> GdPictureStatus.OK Then MessageBox.Show("The NewPage() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption) GoTo [error] End If If (gdpicturePDF.SetFillAlpha(180) <> GdPictureStatus.OK) OrElse (gdpicturePDF.SetFillColor(255, 0, 0) <> GdPictureStatus.OK) OrElse (gdpicturePDF.DrawEllipse(100, 150, 180, 60, True, False) <> GdPictureStatus.OK) Then MessageBox.Show("Drawing the first ellipse has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption) GoTo [error] End If gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginBottomLeft) If (gdpicturePDF.SetFillColor(0, 0, 255) <> GdPictureStatus.OK) OrElse (gdpicturePDF.DrawEllipse(100, 150, 180, 60, True, False) <> GdPictureStatus.OK) Then MessageBox.Show("Drawing the second ellipse has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption) GoTo [error] End If gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopRight) If (gdpicturePDF.SetFillColor(138, 43, 226) <> GdPictureStatus.OK) OrElse (gdpicturePDF.DrawEllipse(100, 150, 180, 60, True, False) <> GdPictureStatus.OK) Then MessageBox.Show("Drawing the third ellipse has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption) GoTo [error] End If gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginBottomRight) If (gdpicturePDF.SetFillColor(255, 228, 196) <> GdPictureStatus.OK) OrElse (gdpicturePDF.DrawEllipse(100, 150, 180, 60, True, False) <> GdPictureStatus.OK) Then MessageBox.Show("Drawing the fourth ellipse has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption) GoTo [error] End If Dim status As GdPictureStatus = gdpicturePDF.SaveToFile("test_DrawEllipse2.pdf") If status = GdPictureStatus.OK Then MessageBox.Show("The example has been followed successfully and the file has been saved.", caption) Else MessageBox.Show("The example has been followed successfully, but the file can't be saved. Status: " + status.ToString(), caption) End If [error]: gdpicturePDF.Dispose() string caption = "Example: DrawEllipse"; GdPicturePDF gdpicturePDF = new GdPicturePDF(); if (gdpicturePDF.NewPDF() != GdPictureStatus.OK) { MessageBox.Show("The NewPDF() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption); goto error; } gdpicturePDF.SetMeasurementUnit(PdfMeasurementUnit.PdfMeasurementUnitMillimeter); gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopLeft); if (gdpicturePDF.NewPage(210, 297) != GdPictureStatus.OK) { MessageBox.Show("The NewPage() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption); goto error; } if ((gdpicturePDF.SetFillAlpha(180) != GdPictureStatus.OK) || (gdpicturePDF.SetFillColor(255, 0, 0) != GdPictureStatus.OK) || (gdpicturePDF.DrawEllipse(100, 150, 180, 60, true, false) != GdPictureStatus.OK)) { MessageBox.Show("Drawing the first ellipse has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption); goto error; } gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginBottomLeft); if ((gdpicturePDF.SetFillColor(0, 0, 255) != GdPictureStatus.OK) || (gdpicturePDF.DrawEllipse(100, 150, 180, 60, true, false) != GdPictureStatus.OK)) { MessageBox.Show("Drawing the second ellipse has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption); goto error; } gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopRight); if ((gdpicturePDF.SetFillColor(138, 43, 226) != GdPictureStatus.OK) || (gdpicturePDF.DrawEllipse(100, 150, 180, 60, true, false) != GdPictureStatus.OK)) { MessageBox.Show("Drawing the third ellipse has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption); goto error; } gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginBottomRight); if ((gdpicturePDF.SetFillColor(255, 228, 196) != GdPictureStatus.OK) || (gdpicturePDF.DrawEllipse(100, 150, 180, 60, true, false) != GdPictureStatus.OK)) { MessageBox.Show("Drawing the fourth ellipse has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption); goto error; } GdPictureStatus status = gdpicturePDF.SaveToFile("test_DrawEllipse2.pdf"); if (status == GdPictureStatus.OK) MessageBox.Show("The example has been followed successfully and the file has been saved.", caption); else MessageBox.Show("The example has been followed successfully, but the file can't be saved. Status: " + status.ToString(), caption); error: gdpicturePDF.Dispose();

Reference

GdPicturePDF Class
GdPicturePDF Members
GetMeasurementUnit Method
SetMeasurementUnit Method
SetFillColor(Byte,Byte,Byte) Method
SetLineColor(Byte,Byte,Byte) Method
SetMeasurementUnit Method
SetOrigin Method
GetMeasurementUnit Method
GetOrigin Method
SetFillColor(Byte,Byte,Byte) Method
SetLineColor(Byte,Byte,Byte) Method
DrawRectangle Method
DrawCircle Method