Why is RichTextBox ignoring \fs in my RTF?

Question

I'd like to use a RichTextBox to display some text in the start page of my WinForms application, as follows:

richTextBox1.Rtf = @"{\rtf1\pard\fs40 Hello World\par }";

The RichTextBox ignores my font-size directive (\fs40). It works in both Word and WordPad.

What am I doing wrong?

Answer 1

It turns out that I had the following in the dialog box constructor:

InitializeComponent();
this.Font = SystemFonts.DialogFont;

...this causes all controls (and controls on user controls) on the dialog to ignore font settings.

I think I'll ask another question about that instead.