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1 using System;
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2 using System.Collections.Generic;
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3 using System.Linq;
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4 using System.Runtime.InteropServices;
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5 using System.Text;
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6 using System.Threading.Tasks;
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7 using System.Windows.Forms;
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8
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9 namespace ServerMonitorApp
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10 {
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11 class Win32Helpers
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12 {
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13 [DllImport("user32.dll")]
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14 [return: MarshalAs(UnmanagedType.Bool)]
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15 static extern bool FlashWindowEx(ref FLASHWINFO pwfi);
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16
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17 [StructLayout(LayoutKind.Sequential)]
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18 public struct FLASHWINFO
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19 {
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20 public UInt32 cbSize;
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21 public IntPtr hwnd;
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22 public UInt32 dwFlags;
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23 public UInt32 uCount;
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24 public UInt32 dwTimeout;
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25 }
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26
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27 public enum FlashWindowFlags : uint
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28 {
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29 /// <summary>
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30 /// Stop flashing. The system restores the window to its original state.
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31 /// </summary>
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32 FLASHW_STOP = 0,
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33
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34 /// <summary>
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35 /// Flash the window caption
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36 /// </summary>
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37 FLASHW_CAPTION = 1,
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38
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39 /// <summary>
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40 /// Flash the taskbar button.
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41 /// </summary>
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42 FLASHW_TRAY = 2,
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43
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44 /// <summary>
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45 /// Flash both the window caption and taskbar button.
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46 /// This is equivalent to setting the FLASHW_CAPTION | FLASHW_TRAY flags.
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47 /// </summary>
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48 FLASHW_ALL = 3,
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49
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50 /// <summary>
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51 /// Flash continuously, until the FLASHW_STOP flag is set.
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52 /// </summary>
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53 FLASHW_TIMER = 4,
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54
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55 /// <summary>
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56 /// Flash continuously until the window comes to the foreground.
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57 /// </summary>
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58 FLASHW_TIMERNOFG = 12
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59 }
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60
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61 public static bool FlashWindowEx(Form form)
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62 {
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63 IntPtr hWnd = form.Handle;
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64 FLASHWINFO fInfo = new FLASHWINFO();
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65
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66 fInfo.cbSize = Convert.ToUInt32(Marshal.SizeOf(fInfo));
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67 fInfo.hwnd = hWnd;
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68 fInfo.dwFlags = (uint)FlashWindowFlags.FLASHW_TRAY;
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69 fInfo.uCount = 10;
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70 fInfo.dwTimeout = 0;
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71
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72 return FlashWindowEx(ref fInfo);
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73 }
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74
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75 public static bool StopFlashWindowEx(Form form)
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76 {
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77 IntPtr hWnd = form.Handle;
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78 FLASHWINFO fInfo = new FLASHWINFO();
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79
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80 fInfo.cbSize = Convert.ToUInt32(Marshal.SizeOf(fInfo));
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81 fInfo.hwnd = hWnd;
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82 fInfo.dwFlags = (uint)FlashWindowFlags.FLASHW_STOP;
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83 fInfo.dwTimeout = 0;
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84
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85 return FlashWindowEx(ref fInfo);
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86 }
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87 }
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88 }
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