winform壁纸工具：为图片添加当月的日历并设为壁纸 .-白红宇

winform壁纸工具：为图片添加当月的日历并设为壁纸 .

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发布时间：2019-06-19

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这几天用winform做了一个设置壁纸的小工具，为图片添加当月的日历并设为壁纸，可以手动设置壁纸，也可以定时设置壁纸，最主要的特点是在图片上生成当前月的日历信息。

工具和桌面设置壁纸后的效果如下：

在图片上画日历的类代码Calendar.cs如下：

using System;using System.Collections.Generic;using System.Text;using System.Drawing;using System.IO;using System.Drawing.Imaging;namespace SetWallpaper{    public class Calendar    {        ///         /// 计算星期几: 星期日至星期六的值为0-6        /// 
        public static int GetWeeksOfDate(int year, int month, int day)        {            DateTime dt = new DateTime(year, month, day);            DayOfWeek d = dt.DayOfWeek;            return Convert.ToInt32(d);        }             ///         /// 获取指定年月的天数        /// 
        public static int GetDaysOfMonth(int year, int month)        {            DateTime dtCur = new DateTime(year, month, 1);            int days = dtCur.AddMonths(1).AddDays(-1).Day;            return days;        }        ///         /// 获取在图片上生成日历的图片        /// 
        public static Bitmap GetCalendarPic(Image img)        {            Bitmap bmp = new Bitmap(img.Width, img.Height, PixelFormat.Format24bppRgb);            bmp.SetResolution(72, 72);            using (Graphics g = Graphics.FromImage(bmp))            {                                g.DrawImage(img, 0, 0, img.Width, img.Height);                                                            DateTime dtNow = DateTime.Now;                int year = dtNow.Year;                int month = dtNow.Month;                int day = dtNow.Day;                int day1st = Calendar.GetWeeksOfDate(year, month, 1); //第一天星期几                int days = Calendar.GetDaysOfMonth(year, month); //获取想要输出月份的天数                int startX = img.Width / 2; //开始的X轴位置                int startY = img.Height / 4; //开始的Y轴位置                int posLen = 50; //每次移动的位置长度                int x = startX + day1st * posLen; //1号的开始X轴位置                int y = startY + posLen * 2;//1号的开始Y轴位置                Calendar.DrawStr(g, dtNow.ToString("yyyy年MM月dd日"), startX, startY);                string[] weeks = { "日", "一", "二", "三", "四", "五", "六" };                for (int i = 0; i < weeks.Length; i++)                    Calendar.DrawStr(g, weeks[i], startX + posLen * i, startY + posLen);                for (int j = 1; j <= days; j++)                {                    if (j == day)//如果是今天，设置背景色                        Calendar.DrawStrToday(g, j.ToString().PadLeft(2, ' '), x, y);                    else                        Calendar.DrawStr(g, j.ToString().PadLeft(2, ' '), x, y);                    //星期六结束到星期日时换行，X轴回到初始位置，Y轴增加                    if ((day1st + j) % 7 == 0)                    {                        x = startX;                        y = y + posLen;                    }                    else                        x = x + posLen;                }                                return bmp;            }        }        ///         /// 绘制字符串        /// 
        public static void DrawStr(Graphics g, string s, float x, float y)        {            Font font = new Font("宋体", 25, FontStyle.Bold);            PointF pointF = new PointF(x, y);            g.DrawString(s, font, new SolidBrush(Color.Yellow), pointF);        }        ///         /// 绘制有背景颜色的字符串        /// 
        public static void DrawStrToday(Graphics g, string s, float x, float y)        {            Font font = new Font("宋体", 25, FontStyle.Bold);            PointF pointF = new PointF(x, y);            SizeF sizeF = g.MeasureString(s, font);            g.FillRectangle(Brushes.White, new RectangleF(pointF, sizeF));            g.DrawString(s, font, Brushes.Black, pointF);        }     }}

主窗体设置壁纸等的代码FrmMain.cs如下：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.IO;using System.Drawing.Drawing2D;using Microsoft.Win32;using System.Collections;using System.Runtime.InteropServices;using System.Xml;using System.Drawing.Imaging;namespace SetWallpaper{       public partial class FrmMain : Form    {        [DllImport("user32.dll", CharSet = CharSet.Auto)]        public static extern int SystemParametersInfo(int uAction, int uParam, string lpvParam, int fuWinIni);        int screenWidth = Screen.PrimaryScreen.Bounds.Width;        int screenHeight = Screen.PrimaryScreen.Bounds.Height;                  FileInfo[] picFiles;        public FrmMain()        {            InitializeComponent();                   }        private void FrmMain_Load(object sender, EventArgs e)        {            List
     
       list = new List
      
       (){                new DictionaryEntry(1, "居中显示"),                new DictionaryEntry(2, "平铺显示"),                new DictionaryEntry(3, "拉伸显示")            };            cbWallpaperStyle.DisplayMember = "Value";            cbWallpaperStyle.ValueMember = "Key";            cbWallpaperStyle.DataSource = list;            txtPicDir.Text = XmlNodeInnerText("");            timer1.Tick += new EventHandler(timer_Tick);            Text = string.Format("设置桌面壁纸(当前电脑分辨率{0}×{1})", screenWidth, screenHeight);        }             /// 
               /// 浏览单个图片        /// 
        private void btnBrowse_Click(object sender, EventArgs e)        {            using (OpenFileDialog openFileDialog = new OpenFileDialog())            {                openFileDialog.Filter = "Images (*.BMP;*.JPG)|*.BMP;*.JPG;";                openFileDialog.AddExtension = true;                openFileDialog.RestoreDirectory = true;                if (openFileDialog.ShowDialog() == DialogResult.OK)                {                    Bitmap img = (Bitmap)Bitmap.FromFile(openFileDialog.FileName);                    pictureBox1.Image = img;                    string msg = (img.Width != screenWidth || img.Height != screenHeight) ? "，建议选择和桌面分辨率一致图片" : "";                    lblStatus.Text = string.Format("当前图片分辨率{0}×{1}{2}", img.Width, img.Height, msg);                }            }        }        /// 
               /// 手动设置壁纸        /// 
        private void btnSet_Click(object sender, EventArgs e)        {            if (pictureBox1.Image == null)            {                MessageBox.Show("请先选择一张图片。");                return;            }            Image img = pictureBox1.Image;                       SetWallpaper(img);        }        private void SetWallpaper(Image img)        {            Bitmap bmp = Calendar.GetCalendarPic(img);            string filename = Application.StartupPath + "/wallpaper.bmp";            bmp.Save(filename, ImageFormat.Bmp);            string tileWallpaper = "0";            string wallpaperStyle = "0";            string selVal = cbWallpaperStyle.SelectedValue.ToString();            if (selVal == "1")                tileWallpaper = "1";            else if (selVal == "2")                wallpaperStyle = "2";            //写到注册表，避免系统重启后失效            RegistryKey regKey = Registry.CurrentUser;            regKey = regKey.CreateSubKey("Control Panel\\Desktop");            //显示方式，居中：0 0， 平铺： 1 0， 拉伸： 0 2            regKey.SetValue("TileWallpaper", tileWallpaper);            regKey.SetValue("WallpaperStyle", wallpaperStyle);            regKey.SetValue("Wallpaper", filename);            regKey.Close();            SystemParametersInfo(20, 1, filename, 1);        }       /// 
              /// 浏览文件夹       /// 
        private void btnBrowseDir_Click(object sender, EventArgs e)        {            string defaultfilePath = XmlNodeInnerText("");            using (FolderBrowserDialog dialog = new FolderBrowserDialog())            {                if (defaultfilePath != "")                      dialog.SelectedPath = defaultfilePath;                                if (dialog.ShowDialog() == DialogResult.OK)                                                  XmlNodeInnerText(dialog.SelectedPath);                              txtPicDir.Text = dialog.SelectedPath;            }        }               /// 
               /// 获取或设置配置文件中的选择目录        /// 
        /// 
               /// 
               public string XmlNodeInnerText(string text)        {            string filename = Application.StartupPath + "/config.xml";            XmlDocument doc = new XmlDocument();            if (!File.Exists(filename))            {                XmlDeclaration dec = doc.CreateXmlDeclaration("1.0", "UTF-8", null);                doc.AppendChild(dec);                               XmlElement elem = doc.CreateElement("WallpaperPath");                elem.InnerText = text;                doc.AppendChild(elem);                doc.Save(filename);            }            else            {                doc.Load(filename);                XmlNode node = doc.SelectSingleNode("//WallpaperPath");                if (node != null)                {                    if (string.IsNullOrEmpty(text))                        return node.InnerText;                    else                    {                        node.InnerText = text;                        doc.Save(filename);                    }                }            }            return text;        }            /// 
               /// 定时自动设置壁纸        /// 
        private void btnAutoSet_Click(object sender, EventArgs e)        {            string path = txtPicDir.Text;            if (!Directory.Exists(path))            {                MessageBox.Show("选择的文件夹不存在");                return;            }            DirectoryInfo dirInfo = new DirectoryInfo(path);            picFiles = dirInfo.GetFiles("*.jpg");            if (picFiles.Length == 0)            {                MessageBox.Show("选择的文件夹里面没有图片");                return;            }            if (btnAutoSet.Text == "开始")            {                timer1.Start();                btnAutoSet.Text = "停止";                lblStatus.Text = string.Format("定时自动换壁纸中...");                        }            else            {                timer1.Stop();                btnAutoSet.Text = "开始";                lblStatus.Text = "";            }        }        /// 
               /// 定时随机设置壁纸        /// 
        private void timer_Tick(object sender, EventArgs e)        {                        timer1.Interval = 1000 * 60 * (int)numericUpDown1.Value;            FileInfo[] files = picFiles;            if (files.Length > 0)            {                Random random = new Random();                int r = random.Next(1, files.Length);                Bitmap img = (Bitmap)Bitmap.FromFile(files[r].FullName);                               pictureBox1.Image = img;                SetWallpaper(img);            }        }        /// 
               /// 双击托盘图标显示窗体        /// 
        private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e)        {            ShowForm();        }        /// 
                 /// 隐藏窗体，并显示托盘图标          /// 
          private void HideForm()        {            this.Visible = false;            this.WindowState = FormWindowState.Minimized;            notifyIcon1.Visible = true;        }        /// 
                 /// 显示窗体          /// 
          private void ShowForm()        {            this.Visible = true;            this.WindowState = FormWindowState.Normal;            notifyIcon1.Visible = false;        }        private void ToolStripMenuItemShow_Click(object sender, EventArgs e)        {            ShowForm();        }        /// 
                 /// 退出          /// 
          private void toolStripMenuItemExit_MouseDown(object sender, MouseEventArgs e)        {            Application.Exit();        }        /// 
                 /// 最小化时隐藏窗体，并显示托盘图标         /// 
          private void FrmMain_SizeChanged(object sender, EventArgs e)        {            if (this.WindowState == FormWindowState.Minimized)            {                HideForm();            }        }             }}