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   源码介绍

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仿QQ

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.Drawing.Drawing2D;
using System.Runtime.InteropServices;

//登录界面部分 

namespace ChatTools
{   
    public partial class LoginForm : Form
    {
        #region  自定义窗口模拟点击移动 
        [DllImport("user32.dll")]  
        public static extern bool ReleaseCapture();
        [DllImport("user32.dll")]
        public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
        public const int WM_SYSCOMMAND = 0x0112;
        public const int SC_MOVE = 0xF010;
        public const int HTCAPTION = 0x0002;
        #endregion 

        /*
         * 给定3个用户  分别是  PP  JJ  EE
         * 密码  11  22  33 
         */

        //简单设定  考虑使用数据库  
        private string[] m_Name = new string[] { "PP", "JJ", "EE" };
        private string[] m_Mima = new string[] { "11", "22", "33" };
        private int UserIndex;

        public LoginForm()
        {
            InitializeComponent();

            SetLoginFormBackImge();   //设置圆角矩形  设置背景

            panel1.Parent = panel4;
            panel2.Parent = panel4;

            panel1.BackgroundImage = Image.FromFile(@".\Image\BasicResources\btn_close_normal.png");
            panel2.BackgroundImage = Image.FromFile(@".\Image\BasicResources\btn_mini_normal.png");
        }

        private void SetLoginFormBackImge()
        {
            //设置圆角矩形 
            Rectangle rect = this.ClientRectangle;
            GraphicsPath path = CommonWay.DrawRoundRectangle(rect, 5);
            this.Region = new Region(path);
            rect = pictureBox1.ClientRectangle;
            path = CommonWay.DrawRoundRectangle(rect, 5);
            pictureBox1.Region = new Region(path);

            //按照时间设置背景图片 
            DateTime now = DateTime.Now;
            int now_Hour = now.Hour;
            if (now_Hour >= 6 && now_Hour <= 12)
                panel4.BackgroundImage = Image.FromFile(@".\Image\BasicResources\morning.jpg");
            else if (now_Hour >= 13 && now_Hour <= 18)
                panel4.BackgroundImage = Image.FromFile(@".\Image\BasicResources\afternoon.jpg");
            else if (now_Hour >= 18 && now_Hour <= 24)
                panel4.BackgroundImage = Image.FromFile(@".\Image\BasicResources\night.jpg");
            else
                panel4.BackgroundImage = Image.FromFile(@".\Image\BasicResources\back2.PNG");
        }

        private void panel1_MouseLeave(object sender, EventArgs e)
        {
            Panel tmp = sender as Panel;
            switch(tmp.Name)
            {
                case "panel1": tmp.BackgroundImage = Image.FromFile(@".\Image\BasicResources\btn_close_normal.png");
                                break;
                case "panel2": tmp.BackgroundImage = Image.FromFile(@".\Image\BasicResources\btn_mini_normal.png");
                                break;
                case "panel3": tmp.BackgroundImage = Image.FromFile(@".\Image\BasicResources\corner_back.png");
                                break;
                case "panel6": tmp.BackgroundImage = Image.FromFile(@".\Image\BasicResources\button_login_normal.png");
                                break;
                case "panel7": tmp.BackgroundImage = Image.FromFile(@".\Image\BasicResources\inputbox.png");
                                break;
                case "panel8": tmp.BackgroundImage = Image.FromFile(@".\Image\BasicResources\inputbox.png");
                                break;
            }
        }

        private void panel1_MouseDown(object sender, MouseEventArgs e)
        {
            Panel tmp = sender as Panel;
            switch(tmp.Name)
            {
                case "panel1": tmp.BackgroundImage = Image.FromFile(@".\Image\BasicResources\btn_close_down.png");
                                this.Close();
                                break;
                case "panel2": tmp.BackgroundImage = Image.FromFile(@".\Image\BasicResources\btn_mini_down.png");
                                this.WindowState = FormWindowState.Minimized;
                                break;
                case "panel3": tmp.BackgroundImage = Image.FromFile(@".\Image\BasicResources\corner_back_press.png");
                                break;
                case "panel6": tmp.BackgroundImage = Image.FromFile(@".\Image\BasicResources\button_login_down.png");
                                if (IsCanLogin())
                                {
                                    m_width = this.ClientSize.Width;
                                    m_height = this.ClientSize.Height;
                                    timer1.Enabled = true;
                                }
                                break;
            }
        }

        private void panel1_MouseEnter(object sender, EventArgs e)
        {
            Panel tmp = sender as Panel;
            switch (tmp.Name)
            {
                case "panel1": tmp.BackgroundImage = Image.FromFile(@".\Image\BasicResources\btn_close_highlight.png");
                    break;
                case "panel2": tmp.BackgroundImage = Image.FromFile(@".\Image\BasicResources\btn_mini_highlight.png");
                    break;
                case "panel3": tmp.BackgroundImage = Image.FromFile(@".\Image\BasicResources\corner_back_hover.png");
                    break;
                case "panel6": tmp.BackgroundImage = Image.FromFile(@".\Image\BasicResources\button_login_hover.png");
                    break;
                case "panel7": tmp.BackgroundImage = Image.FromFile(@".\Image\BasicResources\inputbox_hover.png");
                    break;
                case "panel8": tmp.BackgroundImage = Image.FromFile(@".\Image\BasicResources\inputbox_hover.png");
                    break;
            }
        }

        private void panel4_MouseDown(object sender, MouseEventArgs e)
        {
            ReleaseCapture();
            SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE   HTCAPTION, 0);
        }

        private bool IsCanLogin()
        {
            if (textBox1.Text==""||textBox2.Text=="")
            {
                MessageBox.Show("请输入完整的登陆信息");
                return false;
            }
            else
            {  
                int i;
                for(i=0;i<3;i  )
                {
                    if (textBox1.Text == m_Name[i] && textBox2.Text == m_Mima[i])
                    {
                        UserIndex=i;
                        return true;
                    }
                }
                MessageBox.Show("登陆失败");
                return false;
            }
        }

        private void label1_MouseDown(object sender, MouseEventArgs e)
        {
            if (IsCanLogin())
            {
                m_width = this.ClientSize.Width;
                m_height = this.ClientSize.Height;
                timer1.Enabled = true;
            }
        }

        private void textBox1_MouseEnter(object sender, EventArgs e)
        {
            TextBox tmp = sender as TextBox;
            tmp.Parent.BackgroundImage = Image.FromFile(@".\Image\BasicResources\inputbox_hover.png");
        }

        private void textBox1_MouseLeave(object sender, EventArgs e)
        {
            TextBox tmp = sender as TextBox;
            tmp.Parent.BackgroundImage = Image.FromFile(@".\Image\BasicResources\inputbox.png");
        }

        private int m_width;
        private int m_height;
        private void timer1_Tick(object sender, EventArgs e)
        {
            m_height -= 10;
            this.Size = new Size(m_width, m_height);
            if (m_height<=0)
            {
                timer1.Enabled = false;
                this.Visible = false;                   //这里设置不可见
                MainForm mainFrm = new MainForm(this.Location.X,UserIndex);
                mainFrm.ShowDialog();                   //模态  这里停止  
                this.Close();                           //全局关闭  
            }
        }
    }
}