空闲时间研究一个小功能：winform桌面程序如何实现动态更换桌面图标

/// <summary>
/// 引导启动程序
/// author:zuowenjun
/// date:2021-6-19
/// </summary>
namespace AppLauncher
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
} private void Form1_Load(object sender, EventArgs e)
{
ProcessStartInfo proc = new System.Diagnostics.ProcessStartInfo();
proc.UseShellExecute = true;
proc.FileName =Path.Combine(Application.StartupPath, "DynamicIconApp.exe");
proc.Arguments = "fromlauncher:" + Process.GetCurrentProcess().Id;
proc.CreateNoWindow = false;
//启动进程
Process.Start(proc);
this.Close();
}
}
}

1 /// <summary>
2 /// 原生真实程序
3 /// author:zuowenjun
4 /// date:2021-6-19
5 /// </summary>
6 namespace DynamicIconApp
7 {
8 static class Program
9 {
10 /// <summary>
11 /// The main entry point for the application.
12 /// </summary>
13 [STAThread]
14 static void Main(String[] args)
15 {
16 if (args != null && args.Length > 0)
17 {
18 bool fromlauncher = args[0].StartsWith("fromlauncher:");
19 if (fromlauncher)
20 {
21 int launcherProcId = int.Parse(args[0].Substring(args[0].IndexOf(":") + 1));
22 //等待AppLauncher程序完全退出后，再正式运行
23 //MessageBox.Show("will starting..." + launcherProcId);
24 Process proc = null;
25 try
26 {
27 proc = Process.GetProcessById(launcherProcId);
28 MessageBox.Show(proc.Id + "," + proc.ProcessName + "," + proc.HasExited
29 + "," + proc.ExitTime);
30 }
31 catch (Exception e)
32 {
33 //MessageBox.Show("Process.GetProcessById error:" + e.ToString());
34 if (!e.Message.Contains("has exited"))
35 {
36 return;
37 }
38 proc = null;
39 }
40
41
42 bool waitExit = false;
43 if (null != proc)
44 {
45 try
46 {
47 Thread.Sleep(500);
48 proc.Kill();
49 waitExit = true;
50 }
51 catch (Exception e)
52 {
53 MessageBox.Show("kill Process error:" + e.ToString());
54 proc.WaitForExit();
55 waitExit = true;
56 }
57 }
58
59 //MessageBox.Show("start run after launcher Process exit (waitExit = " + waitExit + ") !");
60 }
61 }
62 Application.SetHighDpiMode(HighDpiMode.SystemAware);
63 Application.EnableVisualStyles();
64 Application.SetCompatibleTextRenderingDefault(false);
65 Application.Run(new Form1());
66 }
67 }
68 }
69
70
71
72
73 /// <summary>
74 /// 原生真实程序
75 /// author:zuowenjun
76 /// date:2021-6-19
77 /// </summary>
78 namespace DynamicIconApp
79 {
80 public partial class Form1 : Form
81 {
82 public Form1()
83 {
84 InitializeComponent();
85 }
86
87 private void Form1_Load(object sender, EventArgs e)
88 {
89 //TODO：这里只是示例，判断是否需要更新桌面快捷方式文件（换图标）取决于远程动态配置
90 bool needUpdateAppLink = true;
91 //TODO:这里只是判断应用程序根目录有没有快捷方式文件，而实际的可能还要增加：
92 //若本地没有，则去CDN下载到本地
93 if (needUpdateAppLink && File.Exists("DynamicIconApp.lnk"))
94 {
95 MessageBox.Show("will be copy DynamicIconApp.link to desktop dir!");
96 String desktopFilePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "DynamicIconApp.lnk");
97 if (File.Exists(desktopFilePath))
98 {
99 File.SetAttributes(desktopFilePath, FileAttributes.Normal);
100 File.Delete(desktopFilePath);
101 }
102 string linkFilePath = Path.Combine(Application.StartupPath, "DynamicIconApp.lnk");
103 File.Copy(linkFilePath, desktopFilePath);
104 }
105 }
106 }
107 }