How to set the TAB width in a Windows Forms TextBox control?

Question

Given a WinForms TextBox control with MultiLine = true and AcceptsTab == true, how can I set the width of the tab character displayed?

I wa

Answer 1

For anyone who wants different tab widths, I took this approach:

using System.Runtime.InteropServices;

[DllImport("User32.dll", CharSet = CharSet.Auto)]
private static extern IntPtr SendMessage(IntPtr h, int msg, int wParam, uint[] lParam);
private const int EM_SETTABSTOPS = 0x00CB;

private void InitialiseTabStops()
{
    // Declare relative tab stops in character widths
    var tabs = new uint[] { 2, 2, 4, 8, 2, 32 };

    // Convert from character width to 1/4 character width
    for (int position = 0; position < tabs.Length; position++)
        tabs[position] *= 4;

    // Convert from relative to absolute positions
    for (int position = 1; position < tabs.Length; position++)
        tabs[position] += tabs[position - 1];

    SendMessage(textBox.Handle, EM_SETTABSTOPS, tabs.Length, tabs);
}