Keyboard Event Problems

Hi, I'm making a text editor. I found that control-i automatically adds some sort of space block into the textbox by default; like how control-z undoes even if I don't code. I want to use control-i for making italics text; but the spaces are interfereing. It's one big block of spaces. Anyone know how I can fix this?

it's an indent. couldn't you use a different key combination? Alt+i or something?

ok. i investigated. it seems to insert a tab. here's a workaround:

vb Code:

Public Class Form1
 
    Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
        If e.Modifiers = Keys.Control AndAlso e.KeyCode = Keys.I Then
            RichTextBox1.SelectionFont = New Font(RichTextBox1.SelectionFont, FontStyle.Italic)
            e.SuppressKeyPress = True
        End If
    End Sub
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Me.KeyPreview = True
    End Sub
 
End Class

K ty, e.surpresskeypress prevents the auto action :)