1

我正在尝试使用 c# 在我的 winform 应用程序中的面板的 Mouse_Hover 事件上编写代码。这是我的代码..

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

但问题是当我将鼠标放在视屏面板上时事件没有触发

 // 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);
4

3 回答 3

2

请创建一个名为“panelvisible”的窗口应用程序。添加一个表单作为“Form1”并将这些代码添加到相应的文件中。

设计师代码

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;
    }
}

代码后面的代码

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;
        }


    }
}
于 2012-09-13T10:51:47.983 回答
0

你有这个代码吗？

this.viewscreen.MouseHover += new System.EventHandler(this.viewscreen_MouseHover);

它应该自动添加，但请确保您不要更改它...另一种方法 - 删除鼠标悬停事件并再次添加。

希望这会有所帮助。

于 2012-09-13T09:39:52.277 回答
0

您是查看屏幕还是一个面板？您是否启用了面板/表单？

于 2012-09-13T09:42:36.617 回答