鼠标悬停事件不触发了面板在C＃ [英] Mouse Hover event not firing over a panel in c#

问题描述

我试图用C＃写在面板Mouse_Hover事件代码在我的winform应用程序。这是我的代码..

 私人无效viewscreen_MouseHover（对象发件人，EventArgs五）
 {
 statuspnl .Enabled = TRUE; 
 statuspnl.Visible = TRUE; 
} 
  

但问题是当我在服用鼠标事件在不触发观察屏面板

  //视屏
 // 
 this.viewscreen.BackColor = System.Drawing中。 SystemColors.ActiveCaptionText; 
 this.viewscreen.Controls.Add（this.statuspnl）; 
 this.viewscreen.Location =新System.Drawing.Point（208，16）; 
 this.viewscreen.Name =视屏; 
 this.viewscreen.Size =新System.Drawing.Size（370，290）; 
 this.viewscreen.TabIndex = 0; 
 this.viewscreen.MouseHover + =新System.EventHandler（this.viewscreen_MouseHover）; 
  

解决方案

请创建一个窗口的应用程序的名称为panelvisible 。添加一种形式为Form1的
，并添加相应的文件中的这些代码。

代码设计者

 命名空间panelvisible 
 {
部分Form1类
 {
 ///<总结> 
 ///必需的设计变量。 
 ///< /总结> 
私人System.ComponentModel.IContainer成分= NULL; 
 
 ///<总结>使用
 ///清理的任何资源。 
 ///< /总结> 
 ///< PARAM NAME =处理>真要是托管资源应释放;否则为false< /参数> 
保护覆盖无效的Dispose（BOOL处置）
 {
如果（处置和放大器;及（成分= NULL）！）
 {
 components.Dispose（）; 
} 
 base.Dispose（处置）; 
} 
 
 #region Windows窗体设计器生成的代码
 
 ///<总结> 
 ///设计器支持所需的方法 - 不要修改
 ///此方法的代码编辑器的内容。 
 ///< /总结> 
私人无效的InitializeComponent（）
 {
 this.panel1 =新System.Windows.Forms.Panel（）; 
 this.label1 =新System.Windows.Forms.Label（）; 
 this.panel2 =新System.Windows.Forms.Panel（）; 
 this.panel1.SuspendLayout（）; 
 this.SuspendLayout（）; 
 // 
 // PANEL1 
 // 
 this.panel1.BackColor = System.Drawing.Color.Red; 
 this.panel1.Controls.Add（this.panel2）; 
 this.panel1.Controls.Add（this.label1）; 
 this.panel1.Location =新System.Drawing.Point（101，36）; 
 this.panel1.Name =PANEL1; 
 this.panel1.Size =新System.Drawing.Size（200，100）; 
 this.panel1.TabIndex = 0; 
 this.panel1.MouseHover + =新System.EventHandler（this.panel1_MouseHover）; 
 // 
 // LABEL1 
 // 
 this.label1.AutoSize = TRUE; 
 this.label1.Location =新System.Drawing.Point（49，42）; 
 this.label1.Name =LABEL1; 
 this.label1.Size =新System.Drawing.Size（31，13）; 
 this.label1.TabIndex = 0; 
 this.label1.Text =你好; 
 this.label1.Visible = FALSE; 
 // 
 //是Panel2 
 // 
 this.panel2.BackColor = System.Drawing.Color.Gray; 
 this.panel2.Location =新System.Drawing.Point（33，70）; 
 this.panel2.Name =是Panel2; 
 this.panel2.Size =新System.Drawing.Size（118，10）; 
 this.panel2.TabIndex = 1; 
 this.panel2.Visible = FALSE; 
 // 
 // Form1中
 // 
 this.AutoScaleDimensions =新System.Drawing.SizeF（6F，13F）; 
 this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; 
 this.ClientSize =新System.Drawing.Size（494，205）; 
 this.Controls.Add（this.panel1）; 
 this.Name =Form1的; 
 this.Text =Form1的; 
 this.panel1.ResumeLayout（假）; 
 this.panel1.PerformLayout（）; 
 this.ResumeLayout（假）; 
 
} 
 
 #endregion 
 
私人System.Windows.Forms.Panel PANEL1; 
私人System.Windows.Forms.Label LABEL1; 
私人System.Windows.Forms.Panel是Panel2; 
} 
} 
  

代码背后

$ B $代码b

 使用系统;使用System.Windows.Forms的
; 
 
命名空间panelvisible 
 {
公共部分Form1类：表格
 {
公共Form1中（）
 {
的InitializeComponent（） ; 
} 
 
私人无效panel1_MouseHover（对象发件人，EventArgs五）
 {
 this.label1.Visible = TRUE; 
 this.label1.Enabled = TRUE; 
 this.panel2.Visible = TRUE; 
 this.panel2.Enabled = TRUE; 
} 
 
 
} 
} 
  

i am trying to write a code on Mouse_Hover event of a panel in my winform app using c#. This is my code ..

private void viewscreen_MouseHover(object sender, EventArgs e)
    {
        statuspnl.Enabled = true;
        statuspnl.Visible = true;
    }

but the problem is the event is not firing when i am taking the mouse over the viewscreen panel

 // viewscreen
        // 
        this.viewscreen.BackColor = System.Drawing.SystemColors.ActiveCaptionText;
        this.viewscreen.Controls.Add(this.statuspnl);
        this.viewscreen.Location = new System.Drawing.Point(208, 16);
        this.viewscreen.Name = "viewscreen";
        this.viewscreen.Size = new System.Drawing.Size(370, 290);
        this.viewscreen.TabIndex = 0;
        this.viewscreen.MouseHover += new System.EventHandler(this.viewscreen_MouseHover);

解决方案

Please create one window app with the name as "panelvisible". Add one form as "Form1" and add these code in respective files.

Code for designer

namespace panelvisible
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.panel1 = new System.Windows.Forms.Panel();
            this.label1 = new System.Windows.Forms.Label();
            this.panel2 = new System.Windows.Forms.Panel();
            this.panel1.SuspendLayout();
            this.SuspendLayout();
            // 
            // panel1
            // 
            this.panel1.BackColor = System.Drawing.Color.Red;
            this.panel1.Controls.Add(this.panel2);
            this.panel1.Controls.Add(this.label1);
            this.panel1.Location = new System.Drawing.Point(101, 36);
            this.panel1.Name = "panel1";
            this.panel1.Size = new System.Drawing.Size(200, 100);
            this.panel1.TabIndex = 0;
            this.panel1.MouseHover += new System.EventHandler(this.panel1_MouseHover);
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(49, 42);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(31, 13);
            this.label1.TabIndex = 0;
            this.label1.Text = "Hello";
            this.label1.Visible = false;
            // 
            // panel2
            // 
            this.panel2.BackColor = System.Drawing.Color.Gray;
            this.panel2.Location = new System.Drawing.Point(33, 70);
            this.panel2.Name = "panel2";
            this.panel2.Size = new System.Drawing.Size(118, 10);
            this.panel2.TabIndex = 1;
            this.panel2.Visible = false;
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(494, 205);
            this.Controls.Add(this.panel1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.panel1.ResumeLayout(false);
            this.panel1.PerformLayout();
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.Panel panel1;
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.Panel panel2;
    }
}

Code for code behind

using System;
using System.Windows.Forms;

namespace panelvisible
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void panel1_MouseHover(object sender, EventArgs e)
        {
            this.label1.Visible = true;
            this.label1.Enabled = true;
            this.panel2.Visible = true;
            this.panel2.Enabled = true;
        }


    }
}

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