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Fast Colored TextBox for Syntax Highlighting

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24 Oct 2014LGPL323 min read 7.3M   104.3K   1.3K  
Custom text editor with syntax highlighting
Imports FastColoredTextBoxNS
Imports System
Imports System.ComponentModel
Imports System.Drawing
Imports System.Windows.Forms

Namespace TesterVB
    Public Class SimplestSyntaxHighlightingSample
        Inherits Form

        Private components As IContainer = Nothing

        Private fctb As FastColoredTextBox

        Private label1 As Label

        Private maroonStyle As TextStyle = New TextStyle(Brushes.Maroon, Nothing, FontStyle.Regular)

        Protected Overrides Sub Dispose(disposing As Boolean)
            If disposing AndAlso Me.components IsNot Nothing Then
                Me.components.Dispose()
            End If
            MyBase.Dispose(disposing)
        End Sub

        Private Sub InitializeComponent()
            Me.label1 = New Label()
            Me.fctb = New FastColoredTextBox()
            MyBase.SuspendLayout()
            Me.label1.Dock = DockStyle.Top
            Me.label1.Font = New Font("Microsoft Sans Serif", 9.75F, FontStyle.Regular, GraphicsUnit.Point, 204)
            Me.label1.Location = New Point(0, 0)
            Me.label1.Name = "label1"
            Me.label1.Size = New Size(498, 45)
            Me.label1.TabIndex = 1
            Me.label1.Text = "This example shows how to make simplest syntax highlighting."
            Me.fctb.AutoScrollMinSize = New Size(25, 15)
            Me.fctb.BackBrush = Nothing
            Me.fctb.Cursor = Cursors.IBeam
            Me.fctb.DescriptionFile = ""
            Me.fctb.DisabledColor = Color.FromArgb(100, 180, 180, 180)
            Me.fctb.Dock = DockStyle.Fill
            Me.fctb.Font = New Font("Consolas", 9.75F)
            Me.fctb.Location = New Point(0, 45)
            Me.fctb.Name = "fctb"
            Me.fctb.Paddings = New Padding(0)
            Me.fctb.SelectionColor = Color.FromArgb(50, 0, 0, 255)
            Me.fctb.Size = New Size(498, 216)
            Me.fctb.TabIndex = 0
            AddHandler Me.fctb.TextChanged, New EventHandler(Of TextChangedEventArgs)(AddressOf Me.fctb_TextChanged)
            MyBase.AutoScaleDimensions = New SizeF(6.0F, 13.0F)
            MyBase.AutoScaleMode = AutoScaleMode.Font
            MyBase.ClientSize = New Size(498, 261)
            MyBase.Controls.Add(Me.fctb)
            MyBase.Controls.Add(Me.label1)
            MyBase.Name = "SimplestSyntaxHighlightingSample"
            Me.Text = "SimplestSyntaxHighlightingSample"
            MyBase.ResumeLayout(False)
        End Sub

        Public Sub New()
            Me.InitializeComponent()
            Me.fctb.Text = "<li>Article" & vbLf & "<a href=""#_comments"">Ask a Question about this article</a></li>" & vbLf & "<li class=""heading"">Quick Answers</li>" & vbLf & "<li><a href=""/Questions/ask.aspx"">Ask a Question</a></li>"
        End Sub

        Private Sub fctb_TextChanged(sender As Object, e As TextChangedEventArgs)
            e.ChangedRange.ClearStyle(New Style() {Me.maroonStyle})
            e.ChangedRange.SetStyle(Me.maroonStyle, "<[^>]+>")
        End Sub
    End Class
End Namespace

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License

This article, along with any associated source code and files, is licensed under The GNU Lesser General Public License (LGPLv3)


Written By
Software Developer Freelancer
Ukraine Ukraine
I am Pavеl Tоrgаshоv, and I live in Kyiv, Ukraine.
I've been developing software since 1998.
Main activities: processing of large volumes of data, statistics, computer vision and graphics.

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