ByteScout PDF Viewer SDK – VB.NET – Set PDF Viewer Selection Options and Use CustomPaint Event

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ByteScout PDF Viewer SDK – VB.NET – Set PDF Viewer Selection Options and Use CustomPaint Event

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ByteScout-PDF-Viewer-SDK-VB-NET-Set-PDF-Viewer-Selection-Options-and-Use-CustomPaint-Event.pdf

How to set PDF viewer selection options and use custompaint event in VB.NET and ByteScout PDF Viewer SDK

The tutorial shows how to set PDF viewer selection options and use custompaint event in VB.NET

Source code documentation samples provide quick and easy way to add a required functionality into your application. ByteScout PDF Viewer SDK: the visual component that you can use to quickly create your own pdf viewer application or add pdf vieweing functionality into your existing app. into your WinForms application. Includes support for selection using mouse, returns coordinates, you may add custom painting on top of pdf displayed. It can set PDF viewer selection options and use custompaint event in VB.NET.

The SDK samples like this one below explain how to quickly make your application do set PDF viewer selection options and use custompaint event in VB.NET with the help of ByteScout PDF Viewer SDK. In your VB.NET project or application you may simply copy & paste the code and then run your app! This basic programming language sample code for VB.NET will do the whole work for you to set PDF viewer selection options and use custompaint event.

Download free trial version of ByteScout PDF Viewer SDK from our website with this and other source code samples for VB.NET.

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Form1.Designer.vb

      Partial Class Form1
	''' <summary>
	''' Required designer variable.
	''' </summary>
	Private components As System.ComponentModel.IContainer = Nothing

	''' <summary>
	''' Clean up any resources being used.
	''' </summary>
	''' <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
	Protected Overrides Sub Dispose(disposing As Boolean)
		If disposing AndAlso (components IsNot Nothing) Then
			components.Dispose()
		End If
		MyBase.Dispose(disposing)
	End Sub

	#Region "Windows Form Designer generated code"

	''' <summary>
	''' Required method for Designer support - do not modify
	''' the contents of this method with the code editor.
	''' </summary>
	Private Sub InitializeComponent()
        Me.pdfViewerControl1 = New Bytescout.PDFViewer.PDFViewerControl()
        Me.toolStrip1 = New System.Windows.Forms.ToolStrip()
        Me.tsbOpen = New System.Windows.Forms.ToolStripButton()
        Me.cbLockSelection = New System.Windows.Forms.CheckBox()
        Me.cbAllowResizeSelection = New System.Windows.Forms.CheckBox()
        Me.cbMultiSelectMode = New System.Windows.Forms.CheckBox()
        Me.toolStrip1.SuspendLayout()
        Me.SuspendLayout()
        '
        'pdfViewerControl1
        '
        Me.pdfViewerControl1.AllowResizeSelectionRectangles = True
        Me.pdfViewerControl1.Anchor = CType((((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom) _
            Or System.Windows.Forms.AnchorStyles.Left) _
            Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
        Me.pdfViewerControl1.BackColor = System.Drawing.SystemColors.ButtonShadow
        Me.pdfViewerControl1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.pdfViewerControl1.Location = New System.Drawing.Point(12, 97)
        Me.pdfViewerControl1.MouseMode = Bytescout.PDFViewer.MouseMode.Selection
        Me.pdfViewerControl1.MultiSelectMode = True
        Me.pdfViewerControl1.Name = "pdfViewerControl1"
        Me.pdfViewerControl1.RegistrationKey = Nothing
        Me.pdfViewerControl1.RegistrationName = Nothing
        Me.pdfViewerControl1.Size = New System.Drawing.Size(1153, 568)
        Me.pdfViewerControl1.TabIndex = 0
        '
        'toolStrip1
        '
        Me.toolStrip1.Items.AddRange(New System.Windows.Forms.ToolStripItem() {Me.tsbOpen})
        Me.toolStrip1.Location = New System.Drawing.Point(0, 0)
        Me.toolStrip1.Name = "toolStrip1"
        Me.toolStrip1.Size = New System.Drawing.Size(1177, 25)
        Me.toolStrip1.TabIndex = 1
        Me.toolStrip1.Text = "toolStrip1"
        '
        'tsbOpen
        '
        Me.tsbOpen.ImageTransparentColor = System.Drawing.Color.Magenta
        Me.tsbOpen.Name = "tsbOpen"
        Me.tsbOpen.Size = New System.Drawing.Size(80, 22)
        Me.tsbOpen.Text = "&Open PDF"
        '
        'cbLockSelection
        '
        Me.cbLockSelection.AutoSize = True
        Me.cbLockSelection.Location = New System.Drawing.Point(12, 74)
        Me.cbLockSelection.Name = "cbLockSelection"
        Me.cbLockSelection.Size = New System.Drawing.Size(95, 17)
        Me.cbLockSelection.TabIndex = 2
        Me.cbLockSelection.Text = "Lock selection"
        Me.cbLockSelection.UseVisualStyleBackColor = True
        '
        'cbAllowResizeSelection
        '
        Me.cbAllowResizeSelection.AutoSize = True
        Me.cbAllowResizeSelection.Checked = True
        Me.cbAllowResizeSelection.CheckState = System.Windows.Forms.CheckState.Checked
        Me.cbAllowResizeSelection.Location = New System.Drawing.Point(12, 51)
        Me.cbAllowResizeSelection.Name = "cbAllowResizeSelection"
        Me.cbAllowResizeSelection.Size = New System.Drawing.Size(178, 17)
        Me.cbAllowResizeSelection.TabIndex = 3
        Me.cbAllowResizeSelection.Text = "Allow resize selection rectangles"
        Me.cbAllowResizeSelection.UseVisualStyleBackColor = True
        '
        'cbMultiSelectMode
        '
        Me.cbMultiSelectMode.AutoSize = True
        Me.cbMultiSelectMode.Checked = True
        Me.cbMultiSelectMode.CheckState = System.Windows.Forms.CheckState.Checked
        Me.cbMultiSelectMode.Location = New System.Drawing.Point(12, 28)
        Me.cbMultiSelectMode.Name = "cbMultiSelectMode"
        Me.cbMultiSelectMode.Size = New System.Drawing.Size(108, 17)
        Me.cbMultiSelectMode.TabIndex = 4
        Me.cbMultiSelectMode.Text = "Multi-select mode"
        Me.cbMultiSelectMode.UseVisualStyleBackColor = True
        '
        'Form1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(1177, 677)
        Me.Controls.Add(Me.cbMultiSelectMode)
        Me.Controls.Add(Me.cbAllowResizeSelection)
        Me.Controls.Add(Me.cbLockSelection)
        Me.Controls.Add(Me.pdfViewerControl1)
        Me.Controls.Add(Me.toolStrip1)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.toolStrip1.ResumeLayout(False)
        Me.toolStrip1.PerformLayout()
        Me.ResumeLayout(False)
        Me.PerformLayout()

    End Sub

	#End Region

    Private WithEvents pdfViewerControl1 As Bytescout.PDFViewer.PDFViewerControl
    Private WithEvents toolStrip1 As System.Windows.Forms.ToolStrip
    Private WithEvents tsbOpen As System.Windows.Forms.ToolStripButton
    Private WithEvents cbLockSelection As System.Windows.Forms.CheckBox
    Private WithEvents cbAllowResizeSelection As System.Windows.Forms.CheckBox
    Private WithEvents cbMultiSelectMode As System.Windows.Forms.CheckBox
End Class

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Form1.vb

      Imports System.Collections.Generic
Imports System.Drawing
Imports System.Windows.Forms
Imports Bytescout.PDFViewer

Public Partial Class Form1
	Inherits Form
	Public Sub New()
		InitializeComponent()
	End Sub

	Protected Overrides Sub OnLoad(e As EventArgs)
		pdfViewerControl1.InputFile = "sample.pdf"

		MyBase.OnLoad(e)
	End Sub

    Private Sub tsbOpen_Click(sender As Object, e As EventArgs) Handles tsbOpen.Click
        Using openFileDialog As New OpenFileDialog()
            openFileDialog.Title = "Open PDF Document"
            openFileDialog.Filter = "PDF Files (*.pdf)|*.pdf|All Files|*.*"

            If openFileDialog.ShowDialog() = DialogResult.OK Then
                Me.Text = openFileDialog.FileName

                Cursor = Cursors.WaitCursor

                Try
                    pdfViewerControl1.InputFile = openFileDialog.FileName
                Catch exception As Exception
                    MessageBox.Show(exception.Message)
                Finally
                    Cursor = Cursors.[Default]
                End Try
            End If
        End Using
    End Sub

    Private Sub cbMultiSelectMode_CheckedChanged(sender As Object, e As EventArgs) Handles cbMultiSelectMode.CheckedChanged
        pdfViewerControl1.MultiSelectMode = cbMultiSelectMode.Checked
    End Sub

    Private Sub cbAllowResizeSelection_CheckedChanged(sender As Object, e As EventArgs) Handles cbAllowResizeSelection.CheckedChanged
        pdfViewerControl1.AllowResizeSelectionRectangles = cbAllowResizeSelection.Checked
    End Sub

    Private Sub cbLockSelection_CheckedChanged(sender As Object, e As EventArgs) Handles cbLockSelection.CheckedChanged
        pdfViewerControl1.LockSelection = cbLockSelection.Checked
    End Sub

	Private _labels As List(Of [String]) = New List(Of String)()

    Private Sub pdfViewerControl1_SelectionChanged(ByVal sender As Object, ByVal selectionChange As SelectionChange, ByVal selectionIndex As Integer) Handles pdfViewerControl1.SelectionChanged
        If pdfViewerControl1.Selection.Length > _labels.Count Then
            For i As Integer = _labels.Count To pdfViewerControl1.Selection.Length - 1
                _labels.Add(New Random().[Next]().ToString())
            Next
        End If
    End Sub

    Private Sub pdfViewerControl1_CustomPaint(sender As Object, e As PaintEventArgs) Handles pdfViewerControl1.CustomPaint
        ' Paint labels
        For i As Integer = 0 To pdfViewerControl1.Selection.Length - 1
            Dim r As Rectangle = Rectangle.Round(pdfViewerControl1.Selection(i))
            r = pdfViewerControl1.TranslateRectangleToViewport(r)

            Dim textSize As Size = TextRenderer.MeasureText(_labels(i), Font)
            Dim textRectangle As New Rectangle(r.Left, r.Top - textSize.Height - 6, textSize.Width + 2, textSize.Height + 2)

            e.Graphics.FillRectangle(Brushes.DarkBlue, textRectangle)
            TextRenderer.DrawText(e.Graphics, _labels(i), Font, textRectangle, Color.White, TextFormatFlags.HorizontalCenter Or TextFormatFlags.VerticalCenter)
        Next
    End Sub
End Class

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout PDF Viewer SDK Home Page

Explore ByteScout PDF Viewer SDK Documentation

Explore Samples

Sign Up for ByteScout PDF Viewer SDK Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

Program.vb

      Imports System.Collections.Generic
Imports System.Windows.Forms

NotInheritable Class Program
	Private Sub New()
	End Sub
	''' <summary>
	''' The main entry point for the application.
	''' </summary>
	<STAThread> _
	Private Shared Sub Main()
		Application.EnableVisualStyles()
		Application.SetCompatibleTextRenderingDefault(False)
		Application.Run(New Form1())
	End Sub
End Class