PdfButtonWidgetFacade Class

Contains properties used to change the button field’s widget annotation without access to its inner structure.

Namespace: DevExpress.Pdf

Assembly: DevExpress.Pdf.v23.2.Core.dll

NuGet Package: DevExpress.Pdf.Core

Declaration

C#

public class PdfButtonWidgetFacade :
    PdfWidgetFacade

VB.NET

Public Class PdfButtonWidgetFacade
    Inherits PdfWidgetFacade

Remarks

Use the Widgets property to get options of each widget annotation associated with the button form field. The PdfButtonWidgetFacade class properties allow you to change the border and background color, specify alternate caption and more.

The code sample below changes the button form field appearance:

C#

using (PdfDocumentProcessor pdfDocumentProcessor = new PdfDocumentProcessor())
{
    pdfDocumentProcessor.LoadDocument("Documents//FormDemo.pdf");

    PdfDocumentFacade documentFacade = pdfDocumentProcessor.DocumentFacade;
    PdfAcroFormFacade acroForm = documentFacade.AcroForm;

    //Obtain button form field parameters:
    PdfButtonFormFieldFacade pushButton = acroForm.GetButtonFormField("Submit");

    //Retrieve form field widget:
    PdfButtonWidgetFacade buttonWidget = pushButton.Widgets[0];

    //Change widget's color options:
    buttonWidget.BorderWidth = 1;
    buttonWidget.BackgroundColor = new PdfRGBColor(0.81, 0.81, 0.81);
    buttonWidget.BorderColor = new PdfRGBColor(0.47, 0.44, 0.67);
    buttonWidget.FontColor = new PdfRGBColor(0.34, 0.25, 0.36);
}

VB.NET

Using pdfDocumentProcessor As New PdfDocumentProcessor()
  pdfDocumentProcessor.LoadDocument("Documents//FormDemo.pdf")

  Dim documentFacade As PdfDocumentFacade = pdfDocumentProcessor.DocumentFacade
  Dim acroForm As PdfAcroFormFacade = documentFacade.AcroForm

  'Obtain button form field parameters:
  Dim pushButton As PdfButtonFormFieldFacade = acroForm.GetButtonFormField("Submit")

  'Retrieve form field widget:
  Dim buttonWidget As PdfButtonWidgetFacade = pushButton.Widgets(0)

  'Change widget's color options:
  buttonWidget.BorderWidth = 1
  buttonWidget.BackgroundColor = New PdfRGBColor(0.81, 0.81, 0.81)
  buttonWidget.BorderColor = New PdfRGBColor(0.47, 0.44, 0.67)
  buttonWidget.FontColor = New PdfRGBColor(0.34, 0.25, 0.36)
End Using

Change Icon Options

Use the following methods to specify a button icon:

• PdfButtonWidgetFacade.SetNormalIcon - Specifies an icon displayed when the button is not clicked.
• PdfButtonWidgetFacade.SetAlternateIcon - Specifies an icon displayed when the user clicks the button, but before the button is released.
• PdfButtonWidgetFacade.SetRolloverIcon - Specifies an icon displayed when the mouse pointer hovers over the button.

The PdfButtonWidgetIconOptions class properties allow you to specify icon display and scale options. Use the PdfButtonWidgetFacade.IconOptions property to get these options.

The code sample below specifies a normal icon and its options:

C#

using (PdfDocumentProcessor pdfDocumentProcessor = new PdfDocumentProcessor())
{
    pdfDocumentProcessor.LoadDocument("Documents//FormDemo.pdf");

    PdfDocumentFacade documentFacade = pdfDocumentProcessor.DocumentFacade;
    PdfAcroFormFacade acroForm = documentFacade.AcroForm;

    //Change all form fields' color settings:
    var fields = acroForm.GetFields();
    foreach (PdfFormFieldFacade field in fields)
    {
        ChangeFormFieldColor(field);
    }

    //Obtain button form field parameters:
    PdfButtonFormFieldFacade pushButton = acroForm.GetButtonFormField("Submit");
    PdfButtonWidgetFacade buttonWidget = pushButton.Widgets[0];

    //Specify a button icon and set its options:
    buttonWidget.SetNormalIcon("Documents//submit_3802014.png");
    buttonWidget.IconOptions.FitToAnnotationBounds = true;
    buttonWidget.IconOptions.ScaleCondition = PdfIconScalingCircumstances.BiggerThanAnnotationRectangle;
    buttonWidget.TextPosition = PdfWidgetAnnotationTextPosition.NoCaption;
}

VB.NET

Using pdfDocumentProcessor As New PdfDocumentProcessor()
  pdfDocumentProcessor.LoadDocument("Documents//FormDemo.pdf")

  Dim documentFacade As PdfDocumentFacade = pdfDocumentProcessor.DocumentFacade
  Dim acroForm As PdfAcroFormFacade = documentFacade.AcroForm

  'Change all form fields' color settings:
  Dim fields = acroForm.GetFields()
  For Each field As PdfFormFieldFacade In fields
    ChangeFormFieldColor(field)
  Next field

  'Obtain button form field parameters:
  Dim pushButton As PdfButtonFormFieldFacade = acroForm.GetButtonFormField("Submit")
  Dim buttonWidget As PdfButtonWidgetFacade = pushButton.Widgets(0)

  'Specify a button icon and set its options:
  buttonWidget.SetNormalIcon("Documents//submit_3802014.png")
  buttonWidget.IconOptions.FitToAnnotationBounds = True
  buttonWidget.IconOptions.ScaleCondition = PdfIconScalingCircumstances.BiggerThanAnnotationRectangle
  buttonWidget.TextPosition = PdfWidgetAnnotationTextPosition.NoCaption
End Using

Inheritance

Object

PdfWidgetFacade

PdfButtonWidgetFacade