Rinecamo schrieb:

For Each Str As String In LineOfText.Split(CChar(";"), StringSplitOptions.None)

private void MainForm_Load(object sender, EventArgs e)
{
// Add the keywords to the list.

m_syntaxRichTextBox.Settings.Keywords.Add("function");
m_syntaxRichTextBox.Settings.Keywords.Add("if");
m_syntaxRichTextBox.Settings.Keywords.Add("then");
m_syntaxRichTextBox.Settings.Keywords.Add("else");
m_syntaxRichTextBox.Settings.Keywords.Add("elseif");
m_syntaxRichTextBox.Settings.Keywords.Add("end");

// Set the comment identifier.

// For Lua this is two minus-signs after each other (--).

// For C++ code we would set this property to "//".

m_syntaxRichTextBox.Settings.Comment = "--";

// Set the colors that will be used.

m_syntaxRichTextBox.Settings.KeywordColor = Color.Blue;
m_syntaxRichTextBox.Settings.CommentColor = Color.Green;
m_syntaxRichTextBox.Settings.StringColor = Color.Gray;
m_syntaxRichTextBox.Settings.IntegerColor = Color.Red;

// Let's not process strings and integers.

m_syntaxRichTextBox.Settings.EnableStrings = false;
m_syntaxRichTextBox.Settings.EnableIntegers = false;

// Let's make the settings we just set valid by compiling

// the keywords to a regular expression.

m_syntaxRichTextBox.CompileKeywords();

// Load a file and update the syntax highlighting.

m_syntaxRichTextBox.LoadFile("script.txt", RichTextBoxStreamType.PlainText);
m_syntaxRichTextBox.ProcessAllLines();
}

Known issues

Colorizing fails to work when pasting something larger than one line.
C-style comments not yet implemented.
Can be slow sometimes. Optimization needed.