使用带有scrolbars任何控制（在C＃Windows窗体）当鼠标滚轮不会触发事件 [英] MouseWheel event doesn't fire when using any control with scrolbars (in C# Windows Forms)

问题描述

鼠标滚轮事件确实时我正在使用的任何控件（列表框，面板，文本框）的滚动条

要重现问题不火
：

 公共Form1类：表格
 {
私人只读按钮按钮1; 
私人只读文本框textBox1的; 
 
私人无效button1_MouseWheel（对象发件人，MouseEventArgs E）
 {
的ToString（）; //不火的时候，取消注释行跌破
} 
 
公共Form1中（）
 {
按钮1 =新的Button（）; 
 textBox1的=新的TextBox（）; 
 SuspendLayout（）; 
 
 button1.Location =新System.Drawing.Point（80，105）; 
 button1.Size =新System.Drawing.Size（75，23）; 
 button1.MouseWheel + = button1_MouseWheel; 
 button1.Click + =的button1_Click; 
 
 textBox1.Location =新System.Drawing.Point（338，105）; 
 //textBox1.Multiline = TRUE; //取消注释此
 //textBox1.ScrollBars = ScrollBars.Vertical; //取消注释此
 textBox1.Size =新System.Drawing.Size（100，92）; 
 
 ClientSize =新System.Drawing.Size（604，257）; 
 Controls.Add被（textBox1中）; 
 Controls.Add被（按钮1）; 
 ResumeLayout（假）; 
 PerformLayout（）; 
} 
 
 //单击该按钮将焦点，但即使我做明确的焦点（）或选择（）
 //仍然不起作用
私人无效的button1_Click（对象发件人，发送System.EventArgs）
 {
 button1.Focus（）; 
 button1.Select（）; 
} 
} 
  

解决方案

< STRONG>我找到了解决方案，gility是默认的鼠标配置。的联想USB光电鼠标的默认配置是：

控制面板/鼠标/轮/线轮 - > 启用通用滚动;

我更改为：

控制面板/鼠标/轮/线轮 - > 使用的Microsoft Office 97滚动仿真仅

现在在.NET代码与鼠标滚轮工作的关注 控制的。

---

但问题是：

• 如何解决它在.NET代码？


• 我怎么能检测.NET代码这种情况呢？

任何想法？

MouseWheel event doesn't fire when I' am using any control (ListBox, Panel, TextBox) with scrollbars.

To reproduce problem:

public class Form1 : Form
 {
  private readonly Button button1;
  private readonly TextBox textBox1;

  private void button1_MouseWheel(object sender, MouseEventArgs e)
  {
   ToString(); // doesn't fire when uncomment lines below
  }

  public Form1()
  {
   button1 = new Button();
   textBox1 = new TextBox();
   SuspendLayout();

   button1.Location = new System.Drawing.Point(80, 105);
   button1.Size = new System.Drawing.Size(75, 23);
   button1.MouseWheel += button1_MouseWheel;
   button1.Click += button1_Click;

   textBox1.Location = new System.Drawing.Point(338, 105);
   //textBox1.Multiline = true; // uncomment this
   //textBox1.ScrollBars = ScrollBars.Vertical;  // uncomment this 
   textBox1.Size = new System.Drawing.Size(100, 92);

   ClientSize = new System.Drawing.Size(604, 257);
   Controls.Add(textBox1);
   Controls.Add(button1);
   ResumeLayout(false);
   PerformLayout();
  }

  // Clicking the button sets Focus, but even I do it explicit Focus() or Select()
  // still doesn't work
  private void button1_Click(object sender, System.EventArgs e)
  {
   button1.Focus();
   button1.Select();
  }
 }

解决方案

I found solution, gility is default "Mouse Configuration". Lenovo USB Optical Wheel Mouse default configuration is:

Control Panel/Mouse/Wheel/Whell->Enable Universal Scrolling;

I changed to:

Control Panel/Mouse/Wheel/Whell->Use Microsoft Office 97 Scrolling Emulation Only

Now in .net code MouseWheel working with Focused Control.

---

But questions are:

• how can I fix it in .net code?
• how can I detect this situation in .net code?

Any ideas ?

这篇关于使用带有scrolbars任何控制（在C＃Windows窗体）当鼠标滚轮不会触发事件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！