blocks|key|1259399|text|这是非常有用的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1259400|Set+tab+stop+positions+for+a+multiline+TextBox+control|offset|length|1259401|entityMap|0|LINK|mutability|MUTABLE|url|https://web.archive.org/web/20160803011153/http://www.devx.com:80/vb2themax/Tip/18611^0|0|0|1I|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

this is very useful:

<a href="https://web.archive.org/web/20160803011153/http://www.devx.com:80/vb2themax/Tip/18611" rel="nofollow noreferrer">Set tab stop positions for a multiline TextBox control</a>

blocks|key|1259425|text|我知道您目前正在使用TextBox，但是如果您可以使用RichTextBox，那么您可以使用SelectedTabs属性来设置所需的选项卡宽度：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1259426|richTextBox.SelectionTabs+=+new+int[]+{+15,+30,+45,+60,+75};|code-block|syntax|javascript|1259427|注意，这些偏移量是像素，而不是字符。|1259428|entityMap^0|A|7|R|B|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

I know you are using a <code>TextBox</code> currently, but if you can get away with using a <code>RichTextBox</code> instead, then you can use the SelectedTabs property to set the desired tab width: 

<pre><code>richTextBox.SelectionTabs = new int[] { 15, 30, 45, 60, 75};
</code></pre>

Note that these offsets are pixels, not characters.

blocks|key|1474156|text|通过使用扩展方法，可以向TextBox控件类添加新方法。这是我的实现(包括一个额外的扩展方法，它为您提供插入插入符号的当前位置的坐标)，来自我从上面的贡献者那里收集的信息：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1474157|using+System;
using+System.Drawing;
using+System.Windows.Forms;
using+System.Runtime.InteropServices;

namespace+Extensions
{
++++public+static+class+TextBoxExtension
++++{
++++++++private+const+int+EM_SETTABSTOPS+=+0x00CB;

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

++++++++public+static+Point+GetCaretPosition(this+TextBox+textBox)
++++++++{
++++++++++++Point+point+=+new+Point(0,+0);

++++++++++++if+(textBox.Focused)
++++++++++++{
++++++++++++++++point.X+=+textBox.SelectionStart+-+textBox.GetFirstCharIndexOfCurrentLine()+%2B+1;
++++++++++++++++point.Y+=+textBox.GetLineFromCharIndex(textBox.SelectionStart)+%2B+1;
++++++++++++}

++++++++++++return+point;
++++++++}

++++++++public+static+void+SetTabStopWidth(this+TextBox+textbox,+int+width)
++++++++{
++++++++++++SendMessage(textbox.Handle,+EM_SETTABSTOPS,+1,+new+int[]+{+width+*+4+});
++++++++}
++++}
}|code-block|syntax|javascript|1474158|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

With the use of extension methods, you can add a new method to the TextBox control class. This is my implementation (including an additional extension method that gives you the coordinates for the current location of the insert caret) from what I gathered from the previous contributors above:

<pre><code>using System;
using System.Drawing;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace Extensions
{
 public static class TextBoxExtension
 {
 private const int EM_SETTABSTOPS = 0x00CB;

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

 public static Point GetCaretPosition(this TextBox textBox)
 {
 Point point = new Point(0, 0);

 if (textBox.Focused)
 {
 point.X = textBox.SelectionStart - textBox.GetFirstCharIndexOfCurrentLine() + 1;
 point.Y = textBox.GetLineFromCharIndex(textBox.SelectionStart) + 1;
 }

 return point;
 }

 public static void SetTabStopWidth(this TextBox textbox, int width)
 {
 SendMessage(textbox.Handle, EM_SETTABSTOPS, 1, new int[] { width * 4 });
 }
 }
}
</code></pre>

blocks|key|1474191|text|对于任何想要不同标签宽度的人，我采取了以下方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1474192|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%2B%2B)
++++++++tabs[position]+*=+4;

++++//+Convert+from+relative+to+absolute+positions
++++for+(int+position+=+1;+position+<+tabs.Length;+position%2B%2B)
++++++++tabs[position]+%2B=+tabs[position+-+1];

++++SendMessage(textBox.Handle,+EM_SETTABSTOPS,+tabs.Length,+tabs);
}|code-block|syntax|javascript|1474193|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

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

<pre><code>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 &lt; tabs.Length; position++)
 tabs[position] *= 4;

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

 SendMessage(textBox.Handle, EM_SETTABSTOPS, tabs.Length, tabs);
}
</code></pre>

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

I want to use this as a quick and dirty script input box for a plugin. It really doesn't need to be fancy at all, but it would be nice if tabs were not displayed as 8 characters wide...

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

Windows

给定一个带有MultiLine = true和AcceptsTab == true的WinForms TextBox控件，如何设置显示的制表符的宽度？我想使用它作为一个插件的快速和肮脏的脚本输入框。它真的不需要花哨，但如果制表符不显示为8个字符的宽度就好了……

问如何在Windows Forms TextBox控件中设置选项卡宽度？
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