StrokePath Method (GdPicturePDF)

In This Topic

Strokes the current path, in other words paints a line along the current path, defined within a currently selected page of the loaded PDF document. This method sets the path-painting operator "S". Each straight or curved segment in the current path is painted and also be aware that each of the path's sub-paths is handled separately (see PDF Reference, Section "Path-Painting Operators"). By the definition the results of the "S" operator depend on the current settings of the graphics state parameters, for example the line width or the line color, as well as the line pattern or the line join style, etc.

Syntax

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

'Declaration
 
Public Function StrokePath() As GdPictureStatus

public GdPictureStatus StrokePath()

public function StrokePath(): GdPictureStatus;

public function StrokePath() : GdPictureStatus;

public: GdPictureStatus StrokePath();

public:
GdPictureStatus StrokePath();

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.

Remarks

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

You also need to be aware that the path-painting operators end a path object, so once a path has been painted, means stroked, it is no longer defined. If you want to stroke and fill the current path together, you need to use the FillAndStrokePath method instead of the sequence of methods StrokePath and FillPath.

For further assistance, please see the Path Construction and Painting section and the Graphics State section of the GdPicturePDF class in the Reference Guide, as well as the Path-Painting Operators section in the PDF Reference.

Example

How to stroke the current path. You can find more different approaches in the examples below.

VB.NET
C#

Dim caption As String = "Example: StrokePath"
Dim gdpicturePDF As New GdPicturePDF()
Dim status As GdPictureStatus = gdpicturePDF.NewPDF()
If status = GdPictureStatus.OK Then
    gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopLeft)
    gdpicturePDF.SetMeasurementUnit(PdfMeasurementUnit.PdfMeasurementUnitMillimeter)
    If (gdpicturePDF.NewPage(210, 297) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.SetLineWidth(2) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.SetLineColor(255, 0, 0) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.SetFillColor(138, 43, 226) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.BeginPath(100, 10) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(20, 50) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(190, 50) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.ClosePath() = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.StrokePath() = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.BeginPath(100, 80) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(20, 120) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(190, 120) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.ClosePath() = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.FillPath() = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.BeginPath(100, 150) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(20, 200) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(190, 200) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.CloseAndFillAndStrokePath() = GdPictureStatus.OK) Then
        status = gdpicturePDF.SaveToFile("test_StrokePath1.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: StrokePath";
GdPicturePDF gdpicturePDF = new GdPicturePDF();
GdPictureStatus status = gdpicturePDF.NewPDF();
if (status == GdPictureStatus.OK)
{
    gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopLeft);
    gdpicturePDF.SetMeasurementUnit(PdfMeasurementUnit.PdfMeasurementUnitMillimeter);
    if ((gdpicturePDF.NewPage(210, 297) == GdPictureStatus.OK) &&
        (gdpicturePDF.SetLineWidth(2) == GdPictureStatus.OK) &&
        (gdpicturePDF.SetLineColor(255, 0, 0) == GdPictureStatus.OK) &&
        (gdpicturePDF.SetFillColor(138, 43, 226) == GdPictureStatus.OK) &&
        (gdpicturePDF.BeginPath(100, 10) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(20, 50) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(190, 50) == GdPictureStatus.OK) &&
        (gdpicturePDF.ClosePath() == GdPictureStatus.OK) &&
        (gdpicturePDF.StrokePath() == GdPictureStatus.OK) &&
        (gdpicturePDF.BeginPath(100, 80) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(20, 120) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(190, 120) == GdPictureStatus.OK) &&
        (gdpicturePDF.ClosePath() == GdPictureStatus.OK) &&
        (gdpicturePDF.FillPath() == GdPictureStatus.OK) &&
        (gdpicturePDF.BeginPath(100, 150) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(20, 200) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(190, 200) == GdPictureStatus.OK) &&
        (gdpicturePDF.CloseAndFillAndStrokePath() == GdPictureStatus.OK))
    {
        status = gdpicturePDF.SaveToFile("test_StrokePath1.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();

VB.NET
C#

Dim caption As String = "Example: StrokePath"
Dim gdpicturePDF As New GdPicturePDF()
Dim status As GdPictureStatus = gdpicturePDF.NewPDF()
If status = GdPictureStatus.OK Then
    gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopLeft)
    gdpicturePDF.SetMeasurementUnit(PdfMeasurementUnit.PdfMeasurementUnitMillimeter)
    If (gdpicturePDF.NewPage(210, 297) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.SetLineWidth(2) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.SetLineColor(255, 0, 0) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.BeginPath(100, 10) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(20, 50) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(190, 50) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.StrokePath() = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.BeginPath(100, 80) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(20, 120) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(190, 120) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.ClosePath() = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.StrokePath() = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.BeginPath(100, 150) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(20, 200) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(190, 200) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.CloseAndStrokePath() = GdPictureStatus.OK) Then
        status = gdpicturePDF.SaveToFile("test_StrokePath2.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: StrokePath";
GdPicturePDF gdpicturePDF = new GdPicturePDF();
GdPictureStatus status = gdpicturePDF.NewPDF();
if (status == GdPictureStatus.OK)
{
    gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopLeft);
    gdpicturePDF.SetMeasurementUnit(PdfMeasurementUnit.PdfMeasurementUnitMillimeter);
    if ((gdpicturePDF.NewPage(210, 297) == GdPictureStatus.OK) &&
        (gdpicturePDF.SetLineWidth(2) == GdPictureStatus.OK) &&
        (gdpicturePDF.SetLineColor(255, 0, 0) == GdPictureStatus.OK) &&
        (gdpicturePDF.BeginPath(100, 10) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(20, 50) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(190, 50) == GdPictureStatus.OK) &&
        (gdpicturePDF.StrokePath() == GdPictureStatus.OK) &&
        (gdpicturePDF.BeginPath(100, 80) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(20, 120) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(190, 120) == GdPictureStatus.OK) &&
        (gdpicturePDF.ClosePath() == GdPictureStatus.OK) &&
        (gdpicturePDF.StrokePath() == GdPictureStatus.OK) &&
        (gdpicturePDF.BeginPath(100, 150) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(20, 200) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(190, 200) == GdPictureStatus.OK) &&
        (gdpicturePDF.CloseAndStrokePath() == GdPictureStatus.OK))
    {
        status = gdpicturePDF.SaveToFile("test_StrokePath2.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();

Reference

GdPicturePDF Class
GdPicturePDF Members
SetLineColor(Byte,Byte,Byte) Method
BeginPath Method
AddLineToPath Method
ClosePath Method
FillAndStrokePath Method
CloseAndStrokePath Method
CloseAndFillAndStrokePath Method