Using C#, how do I set tab positions in a multiline textbox?

Question

Is there a graceful way to set custom tab sizes/positions in a multiline textbox in C#?

WinForms or WPF? (note that I can't actually say whether this will make a difference!) — AakashM, Jan 04 '10 at 17:15
See http://stackoverflow.com/questions/1298406/how-to-set-the-tab-width-in-a-windows-forms-textbox-control — Mongus Pong, Jan 04 '10 at 17:15

score 10 · Accepted Answer · answered Jan 04 '10 at 17:14

You need to send the EM_SETTABSTOPS message, like this:

static class NativeMethods {
    [DllImport("user32.dll")]
    public static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, ref int lParam);
}
static void SetTabs(TextBox box) {
    //EM_SETTABSTOPS - http://msdn.microsoft.com/en-us/library/bb761663%28VS.85%29.aspx
    int lParam = 16;  //Set tab size to 4 spaces
    NativeMethods.SendMessage(box.Handle, 0x00CB, new IntPtr(1), ref lParam);
    box.Invalidate();
}

Man... you can find some nice tidbits site. – Matthew Whited Jan 06 '10 at 15:21 — Matthew Whited, Jan 06 '10 at 15:21

score 0 · Answer 2 · answered Oct 31 '14 at 12:06

0

Apart from by vb 2013 the friendly people at microsoft have decided you no longer need the windows handle and you can no longer get at it.

answered Oct 31 '14 at 12:06

Dave

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Using C#, how do I set tab positions in a multiline textbox?

2 Answers2

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