blocks|key|733457|text|试着以这种方式实现，它将100%25工作|type|unstyled|depth|inlineStyleRanges|entityRanges|data|733458|panel.HorizontalScroll.Maximum+=+0;
panel.AutoScroll+=+false;
panel.VerticalScroll.Visible+=+false;
panel.AutoScroll+=+true;|code-block|syntax|javascript|733459|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|$]]

Try to implement this way, it will work 100%

<pre><code>panel.HorizontalScroll.Maximum = 0;
panel.AutoScroll = false;
panel.VerticalScroll.Visible = false;
panel.AutoScroll = true;
</code></pre>

blocks|key|733332|text|如果你想亵渎你的代码，你可以尝试这个非常"hackish“的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|733333|[DllImport("user32.dll")]
[return:+MarshalAs(UnmanagedType.Bool)]
private+static+extern+bool+ShowScrollBar(IntPtr+hWnd,+int+wBar,+bool+bShow);

private+enum+ScrollBarDirection
{
++++SB_HORZ+=+0,
++++SB_VERT+=+1,
++++SB_CTL+=+2,
++++SB_BOTH+=+3
}

protected+override+void+WndProc(ref+System.Windows.Forms.Message+m)
{
++++ShowScrollBar(panel1.Handle,+(int)ScrollBarDirection.SB_BOTH,+false);
++++base.WndProc(ref+m);
}|code-block|syntax|javascript|733334|我目前正在使用上面的代码来阻止第三方UserControl显示它的滚动条。他们没有暴露任何适当的隐藏他们的方式。|733335|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

If you feel like desecrating your code you could try this very "hackish" solution:

<pre><code>[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool ShowScrollBar(IntPtr hWnd, int wBar, bool bShow);

private enum ScrollBarDirection
{
 SB_HORZ = 0,
 SB_VERT = 1,
 SB_CTL = 2,
 SB_BOTH = 3
}

protected override void WndProc(ref System.Windows.Forms.Message m)
{
 ShowScrollBar(panel1.Handle, (int)ScrollBarDirection.SB_BOTH, false);
 base.WndProc(ref m);
}
</code></pre>

I'm currently using the code above to prevent a 3rd party UserControl from showing its scrollbars. They weren't exposing any proper ways of hiding them.

blocks|key|733419|text|当AutoScroll=true出现水平滚动时，我也遇到了同样的问题，只有当垂直滚动条出现时，它才会出现。我终于知道我从面板中删除了填充，通过在右边的填充中添加20，它允许垂直滚动条出现，而不是水平滚动条。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|733420|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I was having this same type of issue with the horizontal scroll appearing when AutoScroll=true, it only showed up when the vertical scrollbar appeared. I finally figured out that I removed padding from the panel and by adding 20 back to the right padding it allowed the vertical scrollbar to appear and not show the horizontal one.

blocks|key|733365|text|隐藏HScroll栏的托管C%2B%2B代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|733366|//+Hide+horizontal+scroll+bar
HWND+h+=+static_cast<HWND>+(this->Handle.ToPointer());
ShowScrollBar(h,+SB_HORZ,+false);|code-block|syntax|javascript|733367|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|$]]

Managed C++ code to hide HScroll Bar:

<pre><code>// Hide horizontal scroll bar
HWND h = static_cast&lt;HWND&gt; (this-&gt;Handle.ToPointer());
ShowScrollBar(h, SB_HORZ, false);
</code></pre>

blocks|key|733625|text|SuperOli的回答很棒！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|733626|我更新了代码，以便可以毫无错误地关闭表单。|733627|我希望它对你也适用。|733628|[DllImport("user32.dll")]
[return:+MarshalAs(UnmanagedType.Bool)]
private+static+extern+bool+ShowScrollBar(IntPtr+hWnd,+int+wBar,+bool+bShow);

private+enum+ScrollBarDirection
{
++++SB_HORZ+=+0,
++++SB_VERT+=+1,
++++SB_CTL+=+2,
++++SB_BOTH+=+3
}

protected+override+void+WndProc(ref+System.Windows.Forms.Message+m)
{
++++if+(m.Msg+==+0x85)+//+WM_NCPAINT
++++{++++++++++++++++
++++++++ShowScrollBar(panel1.Handle,+(int)ScrollBarDirection.SB_BOTH,+false);
++++}

++++base.WndProc(ref+m);
}|code-block|syntax|javascript|733629|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|O|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|P|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

SuperOli´s answer was great! I updated the code so it is possible to close the form without any error. I hope it works for you as well.

<pre><code>[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool ShowScrollBar(IntPtr hWnd, int wBar, bool bShow);

private enum ScrollBarDirection
{
 SB_HORZ = 0,
 SB_VERT = 1,
 SB_CTL = 2,
 SB_BOTH = 3
}

protected override void WndProc(ref System.Windows.Forms.Message m)
{
 if (m.Msg == 0x85) // WM_NCPAINT
 { 
 ShowScrollBar(panel1.Handle, (int)ScrollBarDirection.SB_BOTH, false);
 }

 base.WndProc(ref m);
}
</code></pre>

blocks|key|949711|text|Console.BufferHeight+=+44;|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|949712|设置缓冲区高度等于控制台的窗口高度。在我的程序中，我给出了静态高度，但你也可以这样做：|unstyled|949713|Console.BufferHeiht+=+(Console.WindowHight+-+1);|949714|我觉得应该能行得通。|949715|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|N|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|F|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<pre class="lang-cs prettyprint-override"><code>Console.BufferHeight = 44;
</code></pre>

Set the buffer height equals to the console's window height. In my program I give the static height but you can do like this as well:

<pre class="lang-cs prettyprint-override"><code>Console.BufferHeiht = (Console.WindowHight - 1);
</code></pre>

I think it should work.

blocks|key|949553|text|另一种解决方案，似乎是我唯一能用到的，就是相当老套的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|949554|++++++++foreach+(UserControl+control+in+ListPanel.Controls)
++++++++{
++++++++++++if+(ListPanel.VerticalScroll.Visible)
++++++++++++++++control.Width+=+ListPanel.Width+-+23;
++++++++++++else
++++++++++++++++control.Width+=+ListPanel.Width-5;
++++++++}|code-block|syntax|javascript|949555|我在其OnResize事件中调用它|949556|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Another solution, which seemed to be the only one I could get working was the rather hacky:

<pre><code> foreach (UserControl control in ListPanel.Controls)
 {
 if (ListPanel.VerticalScroll.Visible)
 control.Width = ListPanel.Width - 23;
 else
 control.Width = ListPanel.Width-5;
 }
</code></pre>

Which I call in its OnResize event

blocks|key|733575|text|我正在寻找一个问题的答案，如何在需要时向框中添加滚动条，并在不需要时将其删除。这是我为文本框想出的解决方案，允许最大的宽度和高度，根据显示的文本调整大小。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|733576|private+void+txtOutput_TextChanged(object+sender,+EventArgs+e)
++++{
++++++++//+Set+the+scrollbars+to+none.+If+the+content+fits+within+textbox+maximum+size+no+scrollbars+are+needed.+
++++++++txtOutput.ScrollBars+=+ScrollBars.None;

++++++++//+Calculate+the+width+and+height+the+text+will+need+to+fit+inside+the+box
++++++++Size+size+=+TextRenderer.MeasureText(txtOutput.Text,+txtOutput.Font);

++++++++//+Size+the+box+accordingly+(adding+a+bit+of+extra+margin+cause+i+like+it+that+way)
++++++++txtOutput.Width+=+size.Width+%2B+20;
++++++++txtOutput.Height+=+size.Height+%2B+30;


++++++++//+If+the+box+would+need+to+be+larger+than+maximum+size+we+need+scrollbars

++++++++//+If+height+needed+exceeds+maximum+add+vertical+scrollbar
++++++++if+(size.Height+>+txtOutput.MaximumSize.Height)
++++++++{

++++++++++++txtOutput.ScrollBars+=+ScrollBars.Vertical;

++++++++++++//+If+it+also+exceeds+maximum+width+add+both+scrollbars+
++++++++++++//+(You+can't+add+vertical+first+and+then+horizontal+if+you+wan't+both.+You+would+end+up+with+just+the+horizontal)+
++++++++++++if+(size.Width+>+txtOutput.MaximumSize.Width)
++++++++++++{
++++++++++++++++txtOutput.ScrollBars+=+ScrollBars.Both;
++++++++++++}
++++++++}

++++++++//+If+width+needed+exceeds+maximum+add+horosontal+scrollbar+
++++++++else+if+(size.Width+>+txtOutput.MaximumSize.Width)
++++++++{
++++++++++++txtOutput.ScrollBars+=+ScrollBars.Horizontal;
++++++++}
++++}|code-block|syntax|javascript|733577|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|$]]

I was looking for an answer to the question how to add a scrollbar to a box when needed and remove it when not needed. This is the solution i came up with for a textbox, with maximum allowed width and height, resized for the text displayed.

<pre><code>private void txtOutput_TextChanged(object sender, EventArgs e)
 {
 // Set the scrollbars to none. If the content fits within textbox maximum size no scrollbars are needed. 
 txtOutput.ScrollBars = ScrollBars.None;

 // Calculate the width and height the text will need to fit inside the box
 Size size = TextRenderer.MeasureText(txtOutput.Text, txtOutput.Font);

 // Size the box accordingly (adding a bit of extra margin cause i like it that way)
 txtOutput.Width = size.Width + 20;
 txtOutput.Height = size.Height + 30;


 // If the box would need to be larger than maximum size we need scrollbars

 // If height needed exceeds maximum add vertical scrollbar
 if (size.Height &gt; txtOutput.MaximumSize.Height)
 {

 txtOutput.ScrollBars = ScrollBars.Vertical;

 // If it also exceeds maximum width add both scrollbars 
 // (You can't add vertical first and then horizontal if you wan't both. You would end up with just the horizontal) 
 if (size.Width &gt; txtOutput.MaximumSize.Width)
 {
 txtOutput.ScrollBars = ScrollBars.Both;
 }
 }

 // If width needed exceeds maximum add horosontal scrollbar 
 else if (size.Width &gt; txtOutput.MaximumSize.Width)
 {
 txtOutput.ScrollBars = ScrollBars.Horizontal;
 }
 }
</code></pre>

blocks|key|949858|text|根据@Guesting提出的代码，我为面板控件编写了一个自定义类，用于启用双缓冲区选项，还可以启用/禁用每个滚动条。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|949859|+++Public+Class+PanelDoubleBuffer
++++Inherits+Panel

++++'MAIN+LAYOUT+design+scheme
++++Public+Property+ShowVerticalScrolBar+As+Boolean+=+False
++++Public+Property+ShowHorizontalScrolBar+As+Boolean+=+False

++++Public+Sub+New()
++++++++SuspendLayout()

++++++++SetStyle(ControlStyles.AllPaintingInWmPaint,+True)
++++++++SetStyle(ControlStyles.UserPaint,+True)

++++++++SetStyle(ControlStyles.OptimizedDoubleBuffer,+True)
++++++++SetStyle(ControlStyles.SupportsTransparentBackColor,+True)
++++++++SetStyle(ControlStyles.ResizeRedraw,+True)
++++++++Me.UpdateStyles()

++++++++ResumeLayout()
++++End+Sub

++++<DllImport("user32.dll")>
++++Private+Shared+Function+ShowScrollBar(ByVal+hWnd+As+IntPtr,+ByVal+wBar+As+Integer,+ByVal+bShow+As+Boolean)+As+Boolean
++++End+Function

++++Public+Property+SB_HORZ+As+Integer+=+ShowHorizontalScrolBar
++++Public+Property+SB_VERT+As+Integer+=+ShowVerticalScrolBar
++++Public+Property+SB_CTL+As+Integer+=+2
++++Public+Property+SB_BOTH+As+Integer+=+3

++++Protected+Overrides+Sub+WndProc(ByRef+m+As+System.Windows.Forms.Message)
++++++++If+m.Msg+=+&H85+Then
++++++++++++ShowScrollBar(Me.Handle,+CInt(SB_BOTH),+False)
++++++++End+If

++++++++MyBase.WndProc(m)
++++End+Sub
End+Class|code-block|syntax|javascript|949860|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|$]]

Following the code proposed by @Guesting, I have written a custom class for the panel control for enabling the double buffer option and also with possibility of enabling / disabling each scrollbar.
<pre><code> Public Class PanelDoubleBuffer
 Inherits Panel

 'MAIN LAYOUT design scheme
 Public Property ShowVerticalScrolBar As Boolean = False
 Public Property ShowHorizontalScrolBar As Boolean = False

 Public Sub New()
 SuspendLayout()

 SetStyle(ControlStyles.AllPaintingInWmPaint, True)
 SetStyle(ControlStyles.UserPaint, True)

 SetStyle(ControlStyles.OptimizedDoubleBuffer, True)
 SetStyle(ControlStyles.SupportsTransparentBackColor, True)
 SetStyle(ControlStyles.ResizeRedraw, True)
 Me.UpdateStyles()

 ResumeLayout()
 End Sub

 &lt;DllImport(&quot;user32.dll&quot;)&gt;
 Private Shared Function ShowScrollBar(ByVal hWnd As IntPtr, ByVal wBar As Integer, ByVal bShow As Boolean) As Boolean
 End Function

 Public Property SB_HORZ As Integer = ShowHorizontalScrolBar
 Public Property SB_VERT As Integer = ShowVerticalScrolBar
 Public Property SB_CTL As Integer = 2
 Public Property SB_BOTH As Integer = 3

 Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)
 If m.Msg = &amp;H85 Then
 ShowScrollBar(Me.Handle, CInt(SB_BOTH), False)
 End If

 MyBase.WndProc(m)
 End Sub
End Class
</code></pre>

I have a panel (Windows Forms) and I want to disable a panels horizontal scrollbar. I tried this:

<pre><code>HorizontalScroll.Enabled = false;
</code></pre>

But that wouldn't work. 

How can I do this?

How do I disable the horizontal scrollbar in a Panel

Windows

我有一个面板(Windows窗体)，并且我想禁用面板水平滚动条。我试过这个：HorizontalScroll.Enabled = false;但那是行不通的。我该怎么做呢？

问如何禁用面板中的水平滚动条
EN

回答 9

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何禁用面板中的水平滚动条EN

回答 9

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何禁用面板中的水平滚动条
EN