A unique form field identifier specifying a required form field object. You can obtain this identifier using methods like GetFormFieldId, GetFormFieldChildID or methods intended to add form fields.
Example





In This Topic
GdPicture14 Namespace / GdPicturePDF Class / GetFormFieldFontName Method

GetFormFieldFontName Method (GdPicturePDF)

In This Topic
Returns the resource name of the font used to display text in a required form field, that is specified by its unique form field's identifier and it is related to the currently loaded PDF document. This attribute is not restricted to any form fields, even if the form field's appearance doesn't display text. For further assistance, please refer to the PDF Reference, Section "Interactive Forms" .
Syntax
'Declaration

 


Public Function GetFormFieldFontName( _

   ByVal FieldId As Integer _

) As String
public string GetFormFieldFontName( 

   int FieldId

)
public function GetFormFieldFontName( 

    FieldId: Integer

): String; 
public function GetFormFieldFontName( 

   FieldId : int

) : String;
public: string* GetFormFieldFontName( 

   int FieldId

) 
public:

String^ GetFormFieldFontName( 

   int FieldId

)

Parameters

FieldId
A unique form field identifier specifying a required form field object. You can obtain this identifier using methods like GetFormFieldId, GetFormFieldChildID or methods intended to add form fields.

Return Value

The resource name of the defined font for the specified form field. The GetStat method can be subsequently used to determine if this method has been successful.
Remarks
This method is only allowed for use with non-encrypted documents.

It is recommend to use the GetStat method to identify the specific reason for the method's failure, if any.

Just to inform you, that the attributes representing the font and its resources are defined for all form field objects by default, even if the form field's appearance doesn't display text. For further assistance, please refer to the PDF Reference, Section "Interactive Forms".

Example
How to find out font properties of fonts used for all form fields in the current document. 
Dim caption As String = "Example: GetFormFieldFontName"

Dim gdpicturePDF As GdPicturePDF = New GdPicturePDF()

If gdpicturePDF.LoadFromFile("forms.pdf", False) = GdPictureStatus.OK Then

    Dim count As Integer = gdpicturePDF.GetFormFieldsCount()

    If gdpicturePDF.GetStat() = GdPictureStatus.OK Then

        Dim message As String = "This document contains " + count.ToString() + " form fields." + vbCrLf

        Dim formID As Integer = 0

        Dim fName As String = "", fFamily As String = ""

        Dim fSize As Single = 0

        Dim fStyle As GdPicture14.FontStyle = GdPicture14.FontStyle.FontStyleRegular

        Dim isStdF As Boolean = False

        Dim status As GdPictureStatus = GdPictureStatus.OK

        Dim type As PdfFormFieldType = PdfFormFieldType.PdfFormFieldTypeUnknown

        For i As Integer = 0 To count - 1

            formID = gdpicturePDF.GetFormFieldId(i)

            If gdpicturePDF.GetStat() = GdPictureStatus.OK Then

                message = message + (i + 1).ToString() + ". "

                message = message + "type: "

                type = gdpicturePDF.GetFormFieldType(formID)

                If gdpicturePDF.GetStat() = GdPictureStatus.OK Then

                    message = message + type.ToString()

                Else

                    message = message + gdpicturePDF.GetStat().ToString()

                End If

                message = message + "  font: "

                fName = gdpicturePDF.GetFormFieldFontName(formID)

                If gdpicturePDF.GetStat() = GdPictureStatus.OK Then

                    message = message + fName

                Else

                    message = message + gdpicturePDF.GetStat().ToString()

                End If

                message = message + "  size: "

                fSize = gdpicturePDF.GetFormFieldFontSize(formID)

                If gdpicturePDF.GetStat() = GdPictureStatus.OK Then

                    message = message + fSize.ToString()

                Else

                    message = message + gdpicturePDF.GetStat().ToString()

                End If

                message = message + vbCrLf + "    properties: "

                status = gdpicturePDF.GetFormFieldFontProperties(formID, fFamily, fStyle, isStdF)

                If status = GdPictureStatus.OK Then

                    message = message + "  family: " + fFamily + "  style: " + fStyle.ToString() + "  isStandard: " + isStdF.ToString()

                Else

                    message = message + status.ToString()

                End If

                message += vbCrLf

            Else

                message = message + "The GetFormFieldId() method has failed with the status: " + gdpicturePDF.GetStat().ToString()

                Exit For

            End If

        Next

        MessageBox.Show(message, caption)

    Else

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

    End If

Else

    MessageBox.Show("The file can't be loaded.", caption)

End If

gdpicturePDF.Dispose()
string caption = "Example: GetFormFieldFontName";

GdPicturePDF gdpicturePDF = new GdPicturePDF();

if (gdpicturePDF.LoadFromFile("forms.pdf", false) == GdPictureStatus.OK)

{

    int count = gdpicturePDF.GetFormFieldsCount();

    if (gdpicturePDF.GetStat() == GdPictureStatus.OK)

    {

        string message = "This document contains " + count.ToString() + " form fields.\n";

        int formID = 0;

        string fName = "", fFamily = "";

        float fSize = 0;

        GdPicture14.FontStyle fStyle = GdPicture14.FontStyle.FontStyleRegular;

        bool isStdF = false;

        GdPictureStatus status = GdPictureStatus.OK;

        PdfFormFieldType type = PdfFormFieldType.PdfFormFieldTypeUnknown;

        for (int i = 0; i < count; i++)

        {

            formID = gdpicturePDF.GetFormFieldId(i);

            if (gdpicturePDF.GetStat() == GdPictureStatus.OK)

            {

                message = message + (i + 1).ToString() + ". ";

            

                message = message + "type: ";

                type = gdpicturePDF.GetFormFieldType(formID);

                if (gdpicturePDF.GetStat() == GdPictureStatus.OK)

                    message = message + type.ToString();

                else

                    message = message + gdpicturePDF.GetStat().ToString();

            

                message = message + "  font: ";

                fName = gdpicturePDF.GetFormFieldFontName(formID);

                if (gdpicturePDF.GetStat() == GdPictureStatus.OK)

                    message = message + fName;

                else

                    message = message + gdpicturePDF.GetStat().ToString();

            

                message = message + "  size: ";

                fSize = gdpicturePDF.GetFormFieldFontSize(formID);

                if (gdpicturePDF.GetStat() == GdPictureStatus.OK)

                    message = message + fSize.ToString();

                else

                    message = message + gdpicturePDF.GetStat().ToString();

            

                message = message + "\n    properties: ";

                status = gdpicturePDF.GetFormFieldFontProperties(formID, ref fFamily, ref fStyle, ref isStdF);

                if (status == GdPictureStatus.OK)

                    message = message + "  family: " + fFamily + "  style: " +fStyle.ToString() + "  isStandard: " + isStdF.ToString();

                else

                    message = message + status.ToString();

            

                message += "\n";

            }

            else

            {

                message = message + "The GetFormFieldId() method has failed with the status: " + gdpicturePDF.GetStat().ToString();

                break;

            }

        }

        MessageBox.Show(message, caption);

    }

    else

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

}

else

    MessageBox.Show("The file can't be loaded.", caption);

gdpicturePDF.Dispose();
Example
How to find out font properties of fonts used for all form fields in the current document. Dim caption As String = "Example: GetFormFieldFontName" Dim gdpicturePDF As GdPicturePDF = New GdPicturePDF() If gdpicturePDF.LoadFromFile("forms.pdf", False) = GdPictureStatus.OK Then Dim count As Integer = gdpicturePDF.GetFormFieldsCount() If gdpicturePDF.GetStat() = GdPictureStatus.OK Then Dim message As String = "This document contains " + count.ToString() + " form fields." + vbCrLf Dim formID As Integer = 0 Dim fName As String = "", fFamily As String = "" Dim fSize As Single = 0 Dim fStyle As GdPicture14.FontStyle = GdPicture14.FontStyle.FontStyleRegular Dim isStdF As Boolean = False Dim status As GdPictureStatus = GdPictureStatus.OK Dim type As PdfFormFieldType = PdfFormFieldType.PdfFormFieldTypeUnknown For i As Integer = 0 To count - 1 formID = gdpicturePDF.GetFormFieldId(i) If gdpicturePDF.GetStat() = GdPictureStatus.OK Then message = message + (i + 1).ToString() + ". " message = message + "type: " type = gdpicturePDF.GetFormFieldType(formID) If gdpicturePDF.GetStat() = GdPictureStatus.OK Then message = message + type.ToString() Else message = message + gdpicturePDF.GetStat().ToString() End If message = message + " font: " fName = gdpicturePDF.GetFormFieldFontName(formID) If gdpicturePDF.GetStat() = GdPictureStatus.OK Then message = message + fName Else message = message + gdpicturePDF.GetStat().ToString() End If message = message + " size: " fSize = gdpicturePDF.GetFormFieldFontSize(formID) If gdpicturePDF.GetStat() = GdPictureStatus.OK Then message = message + fSize.ToString() Else message = message + gdpicturePDF.GetStat().ToString() End If message = message + vbCrLf + " properties: " status = gdpicturePDF.GetFormFieldFontProperties(formID, fFamily, fStyle, isStdF) If status = GdPictureStatus.OK Then message = message + " family: " + fFamily + " style: " + fStyle.ToString() + " isStandard: " + isStdF.ToString() Else message = message + status.ToString() End If message += vbCrLf Else message = message + "The GetFormFieldId() method has failed with the status: " + gdpicturePDF.GetStat().ToString() Exit For End If Next MessageBox.Show(message, caption) Else MessageBox.Show("The GetFormFieldsCount() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption) End If Else MessageBox.Show("The file can't be loaded.", caption) End If gdpicturePDF.Dispose() string caption = "Example: GetFormFieldFontName"; GdPicturePDF gdpicturePDF = new GdPicturePDF(); if (gdpicturePDF.LoadFromFile("forms.pdf", false) == GdPictureStatus.OK) { int count = gdpicturePDF.GetFormFieldsCount(); if (gdpicturePDF.GetStat() == GdPictureStatus.OK) { string message = "This document contains " + count.ToString() + " form fields.\n"; int formID = 0; string fName = "", fFamily = ""; float fSize = 0; GdPicture14.FontStyle fStyle = GdPicture14.FontStyle.FontStyleRegular; bool isStdF = false; GdPictureStatus status = GdPictureStatus.OK; PdfFormFieldType type = PdfFormFieldType.PdfFormFieldTypeUnknown; for (int i = 0; i < count; i++) { formID = gdpicturePDF.GetFormFieldId(i); if (gdpicturePDF.GetStat() == GdPictureStatus.OK) { message = message + (i + 1).ToString() + ". "; message = message + "type: "; type = gdpicturePDF.GetFormFieldType(formID); if (gdpicturePDF.GetStat() == GdPictureStatus.OK) message = message + type.ToString(); else message = message + gdpicturePDF.GetStat().ToString(); message = message + " font: "; fName = gdpicturePDF.GetFormFieldFontName(formID); if (gdpicturePDF.GetStat() == GdPictureStatus.OK) message = message + fName; else message = message + gdpicturePDF.GetStat().ToString(); message = message + " size: "; fSize = gdpicturePDF.GetFormFieldFontSize(formID); if (gdpicturePDF.GetStat() == GdPictureStatus.OK) message = message + fSize.ToString(); else message = message + gdpicturePDF.GetStat().ToString(); message = message + "\n properties: "; status = gdpicturePDF.GetFormFieldFontProperties(formID, ref fFamily, ref fStyle, ref isStdF); if (status == GdPictureStatus.OK) message = message + " family: " + fFamily + " style: " +fStyle.ToString() + " isStandard: " + isStdF.ToString(); else message = message + status.ToString(); message += "\n"; } else { message = message + "The GetFormFieldId() method has failed with the status: " + gdpicturePDF.GetStat().ToString(); break; } } MessageBox.Show(message, caption); } else MessageBox.Show("The GetFormFieldsCount() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption); } else MessageBox.Show("The file can't be loaded.", caption); gdpicturePDF.Dispose();
See Also

Reference

GdPicturePDF Class
GdPicturePDF Members
GetFormFieldId Method
GetFormFieldChildID Method
GetStat Method
GetStat Method
GetFormFieldsCount Method
GetFormFieldId Method
GetFormFieldChildID Method
GetFormFieldType Method
GetFormFieldFontProperties Method
GetFormFieldFontColor(Int32) Method
GetFormFieldFontSize(Int32) Method
SetFormFieldFontResName Method