从桌面右下角显示的Popup窗口提醒

 

Frm_Main.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace PopupForm
{
    public partial class Frm_Main : Form
    {
        public Frm_Main()
        {
            InitializeComponent();
        }

        private void display_Click(object sender, EventArgs e)
        {
            Frm_Info.Instance().ShowForm();//显示窗体
        }

        private void close_Click(object sender, EventArgs e)
        {
            Frm_Info.Instance().CloseForm();//隐藏窗体
        }
    }
}

Frm_Main.designer.cs

namespace PopupForm
{
    partial class Frm_Main
    {
        /// <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.display = new System.Windows.Forms.Button();
            this.close = new System.Windows.Forms.Button();
            this.groupBox1 = new System.Windows.Forms.GroupBox();
            this.groupBox1.SuspendLayout();
            this.SuspendLayout();
            // 
// display
// 
            this.display.Location = new System.Drawing.Point(16, 42);
            this.display.Name = "display";
            this.display.Size = new System.Drawing.Size(75, 23);
            this.display.TabIndex = 0;
            this.display.Text = "显示";
            this.display.UseVisualStyleBackColor = true;
            this.display.Click += new System.EventHandler(this.display_Click);
            // 
// close
// 
            this.close.Location = new System.Drawing.Point(107, 42);
            this.close.Name = "close";
            this.close.Size = new System.Drawing.Size(75, 23);
            this.close.TabIndex = 1;
            this.close.Text = "隐藏";
            this.close.UseVisualStyleBackColor = true;
            this.close.Click += new System.EventHandler(this.close_Click);
            // 
// groupBox1
// 
            this.groupBox1.Controls.Add(this.close);
            this.groupBox1.Controls.Add(this.display);
            this.groupBox1.Location = new System.Drawing.Point(12, 12);
            this.groupBox1.Name = "groupBox1";
            this.groupBox1.Size = new System.Drawing.Size(200, 100);
            this.groupBox1.TabIndex = 2;
            this.groupBox1.TabStop = false;
            this.groupBox1.Text = "操作类型";
            // 
// Frm_Main
// 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(220, 122);
            this.Controls.Add(this.groupBox1);
            this.MaximizeBox = false;
            this.MinimizeBox = false;
            this.Name = "Frm_Main";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "从桌面右下角显示的Popup窗口提醒";
            this.groupBox1.ResumeLayout(false);
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.Button display;
        private System.Windows.Forms.Button close;
        private System.Windows.Forms.GroupBox groupBox1;
    }
}

Frm_Info.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace PopupForm
{
    public partial class Frm_Info :System.Windows.Forms.Form
    {
        #region 声明的变量
        private System.Drawing.Rectangle Rect;//定义一个存储矩形框的数组
        private FormState InfoStyle = FormState.Hide;//定义变量为隐藏
        static private Frm_Info dropDownForm = new Frm_Info();//实例化当前窗体
        private static int AW_HIDE = 0x00010000; //该变量表示动画隐藏窗体
        private static int AW_SLIDE = 0x00040000;//该变量表示出现滑行效果的窗体
        private static int AW_VER_NEGATIVE = 0x00000008;//该变量表示从下向上开屏
        private static int AW_VER_POSITIVE = 0x00000004;//该变量表示从上向下开屏
        #endregion

        #region 该窗体的构造方法
        public Frm_Info()
        {
            InitializeComponent();
            //初始化工作区大小
            System.Drawing.Rectangle rect = System.Windows.Forms.Screen.GetWorkingArea(this);//实例化一个当前窗口的对象
            this.Rect = new System.Drawing.Rectangle(rect.Right - this.Width - 1,rect.Bottom - this.Height - 1,this.Width,this.Height);//为实例化的对象创建工作区域
        }
        #endregion

        #region 调用API函数显示窗体
        [DllImportAttribute("user32.dll")]
        private static extern bool AnimateWindow(IntPtr hwnd, int dwTime, int dwFlags);
        #endregion

        #region 鼠标控制图片的变化
        private void pictureBox1_MouseEnter(object sender, EventArgs e)
        {
            pictureBox1.Image = imageList1.Images[1];//设定当鼠标进入PictureBox控件时PictureBox控件的图片
        }

        private void pictureBox1_MouseLeave(object sender, EventArgs e)
        {
            pictureBox1.Image = imageList1.Images[0]; //设定当鼠标离开PictureBox控件时PictureBox控件的图片
        }
        #endregion

        #region 定义标识窗体移动状态的枚举值
        protected enum FormState
        {
            
            Hide=0,//隐藏窗体
            Display=1,//显示窗体
            Displaying=2,//显示窗体中
            Hiding=3 //隐藏窗体中
        }
        #endregion

        #region 用属性标识当前状态
        protected FormState FormNowState
        {
            get { return this.InfoStyle; }   //返回窗体的当前状态
            set { this.InfoStyle = value; }  //设定窗体当前状态的值
        }
        #endregion

        #region 显示窗体
        public  void ShowForm()
        {
            switch (this.FormNowState)
            {
                case FormState.Hide:
                    if (this.Height <= this.Rect.Height - 192)//当窗体没有完全显示时
                        this.SetBounds(Rect.X, this.Top - 192, Rect.Width, this.Height + 192);//使窗体不断上移
                    else
                    {
                        this.SetBounds(Rect.X,Rect.Y,Rect.Width,Rect.Height);//设置当前窗体的边界
                    }
                    AnimateWindow(this.Handle, 800, AW_SLIDE + AW_VER_NEGATIVE);//动态显示本窗体
                    break;
            }
        }
        #endregion

        #region 关闭窗体
        public void CloseForm()
        {
            AnimateWindow(this.Handle,800,AW_SLIDE + AW_VER_POSITIVE + AW_HIDE);//动画隐藏窗体
            this.FormNowState = FormState.Hide;//设定当前窗体的状态为隐藏
        }
        #endregion

        #region 返回当前窗体的实例化对象
        static public Frm_Info Instance()
        {
            return dropDownForm; //返回当前窗体的实例化对象
        }
        #endregion
    }
}

Frm_Info.designer.cs

namespace PopupForm
{
    partial class Frm_Info
    {
        /// <summary>
/// 必需的设计器变量。
/// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows 窗体设计器生成的代码

        /// <summary>
/// 设计器支持所需的方法 - 不要
/// 使用代码编辑器修改此方法的内容。
/// </summary>
        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Frm_Info));
            this.imageList1 = new System.Windows.Forms.ImageList(this.components);
            this.pictureBox1 = new System.Windows.Forms.PictureBox();
            ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
            this.SuspendLayout();
            // 
// imageList1
// 
            this.imageList1.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("imageList1.ImageStream")));
            this.imageList1.TransparentColor = System.Drawing.Color.Transparent;
            this.imageList1.Images.SetKeyName(0,"Close2.bmp");
            this.imageList1.Images.SetKeyName(1,"Close1.bmp");
            // 
// pictureBox1
// 
            this.pictureBox1.Location = new System.Drawing.Point(246,7);
            this.pictureBox1.Name = "pictureBox1";
            this.pictureBox1.Size = new System.Drawing.Size(19,19);
            this.pictureBox1.TabIndex = 1;
            this.pictureBox1.TabStop = false;
            // 
// MainForm
// 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F,12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.BackColor = System.Drawing.SystemColors.HotTrack;
            this.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("$this.BackgroundImage")));
            this.ClientSize = new System.Drawing.Size(269,163);
            this.ControlBox = false;
            this.Controls.Add(this.pictureBox1);
            this.ForeColor = System.Drawing.SystemColors.ControlText;
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
            this.Name = "MainForm";
            this.ShowInTaskbar = false;
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "制作下拉窗体";
            this.TopMost = true;
            ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.ImageList imageList1;
        private System.Windows.Forms.PictureBox pictureBox1;
    }
}

作者：墨明棋妙
出处：http://www.cnblogs.com/ynbt/
关于作者：专注于.Net、WCF和移动互联网开发。
本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，如有问题，可以通过ynbt_wang@163.com联系我，非常感谢。 。