Question

When you use a Windows Forms TextBox, the default number of tab stops (spaces) is 8. How do you modify this?

Answer 1

First add the following namespace

using System.Runtime.InteropServices; 

Then add the following after the class declaration:

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

Then add the following to the Form_Load event:

// define value of the Tab indent  int[] stops = {16};  // change the indent  SendMessage(this.textBox1.Handle, EM_SETTABSTOPS, 1, stops);