blocks|key|791435|text|您不能隐藏它，但可以通过重写窗体的CreateParams属性来禁用它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|791436|private+const+int+CP_NOCLOSE_BUTTON+=+0x200;
protected+override+CreateParams+CreateParams
{
++++get
++++{
+++++++CreateParams+myCp+=+base.CreateParams;
+++++++myCp.ClassStyle+=+myCp.ClassStyle+%7C+CP_NOCLOSE_BUTTON+;
+++++++return+myCp;
++++}
}|code-block|syntax|javascript|791437|来源：http://www.codeproject.com/KB/cs/DisableClose.aspx|offset|length|791438|entityMap|0|LINK|mutability|MUTABLE|url|http://www.codeproject.com/KB/cs/DisableClose.aspx^0|0|0|3|1E|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

You can't hide it, but you can disable it by overriding the CreateParams property of the form.

<pre><code>private const int CP_NOCLOSE_BUTTON = 0x200;
protected override CreateParams CreateParams
{
 get
 {
 CreateParams myCp = base.CreateParams;
 myCp.ClassStyle = myCp.ClassStyle | CP_NOCLOSE_BUTTON ;
 return myCp;
 }
}
</code></pre>

Source: <a href="http://www.codeproject.com/KB/cs/DisableClose.aspx" rel="noreferrer">http://www.codeproject.com/KB/cs/DisableClose.aspx</a>

blocks|key|791523|text|你可以通过删除整个系统菜单来隐藏它：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|791524|private+const+int+WS_SYSMENU+=+0x80000;
protected+override+CreateParams+CreateParams
{
++++get
++++{
++++++++CreateParams+cp+=+base.CreateParams;
++++++++cp.Style+&=+~WS_SYSMENU;
++++++++return+cp;
++++}
}|code-block|syntax|javascript|791525|当然，这样做会删除最小化和最大化按钮。|791526|如果您保留了系统菜单，但删除了关闭项，则关闭按钮仍然存在，但被禁用。|791527|最后一种选择是自己绘制非工作区。这是很难做到的。|791528|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Well, you can hide it, by removing the entire system menu:
<pre><code>private const int WS_SYSMENU = 0x80000;
protected override CreateParams CreateParams
{
 get
 {
 CreateParams cp = base.CreateParams;
 cp.Style &amp;= ~WS_SYSMENU;
 return cp;
 }
}
</code></pre>
Of course, doing so removes the minimize and maximize buttons.
If you keep the system menu but remove the close item then the close button remains but is disabled.
The final alternative is to paint the non-client area yourself. That's pretty hard to get right.

blocks|key|575319|text|如果你真的想隐藏它，就像在“不可见”中一样，那么你可能不得不创建一个无边框的窗体并自己绘制标题组件。VisualStyles库提供了可用的窗口元素。您还必须重新添加调整窗体大小或通过抓取标题栏移动窗体的功能。更别提角落里的系统菜单了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|575320|在大多数情况下，很难证明“关闭”按钮不可用是合理的，特别是当你想要一个具有最小化功能的模式表单时。最小化模式表单确实没有任何意义。|575321|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

If you really want to hide it, as in "not visible", then you will probably have to create a borderless form and draw the caption components yourself. VisualStyles library has the Windows Elements available. You would also have to add back in the functionality of re-sizing the form or moving the form by grabbing the caption bar. Not to mention the system menu in the corner.

In most cases, it's hard to justify having the "close" button not available, especially when you want a modal form with minimizing capabilities. Minimizing a modal form really makes no sense.

blocks|key|575369|text|我们可以通过设置this.ControlBox=false;来隐藏表单上的关闭按钮|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|575370|请注意，这将隐藏所有这些大小调整按钮。不只是X。在某些情况下，这可能是好的。|575371|entityMap^0|8|M|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|N|8|@]|D|@]|E|$]]]|I|$]]

We can hide close button on form by setting <code>this.ControlBox=false;</code>
Note that this hides all of those sizing buttons. Not just the X. In some cases that may be fine.

blocks|key|575475|text|您可以通过更改属性部分中的FormBorderStyle或在构造函数中以编程方式隐藏close按钮，方法是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|575476|public+Form1()
{
InitializeComponent();
this.FormBorderStyle+=+FormBorderStyle.None;
}|code-block|syntax|javascript|575477|然后创建一个菜单条项目以退出应用程序。|575478|干杯|575479|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Well you can hide the close button by changing the FormBorderStyle from the properties section or programmatically in the constructor using:

<pre><code>public Form1()
{
InitializeComponent();
this.FormBorderStyle = FormBorderStyle.None;
}
</code></pre>

then you create a menu strip item to exit the application.

cheers

I have a modal dialog, and need to hide the Close (X) button, but I cannot use 
<code>ControlBox = false</code>, because I need to keep the Minimize and Maximize buttons.

I need to hide just Close button, is there any way to do that?

Thanks a lot!

Update: I had permission to disable it, which is simpler :) Thanks all!

How to hide only the Close (x) button?

我有一个模式对话框，需要隐藏Close (X)按钮，但我不能使用ControlBox = false，因为我需要保留最小化和最大化按钮。我只需要隐藏关闭按钮，有什么方法可以做到吗？非常感谢!更新:我有权限禁用它，这很简单:)谢谢大家！

问如何只隐藏关闭(x)按钮？
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