Win32API.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;

namespace AtmoLight
{
  public sealed class Win32API
  {
    private const int MAX_PATH = 260;

    public enum CSIDL
    {
      CSIDL_DESKTOP = 0x0000,          // <desktop>
      CSIDL_INTERNET = 0x0001,         // Internet Explorer (icon on desktop)
      CSIDL_PROGRAMS = 0x0002,         // Start Menu\Programs
      CSIDL_CONTROLS = 0x0003,         // My Computer\Control Panel
      CSIDL_PRINTERS = 0x0004,         // My Computer\Printers
      CSIDL_PERSONAL = 0x0005,         // My Documents
      CSIDL_FAVORITES = 0x0006,        // <user name>\Favorites
      CSIDL_STARTUP = 0x0007,          // Start Menu\Programs\Startup
      CSIDL_RECENT = 0x0008,           // <user name>\Recent
      CSIDL_SENDTO = 0x0009,           // <user name>\SendTo
      CSIDL_BITBUCKET = 0x000a,        // <desktop>\Recycle Bin
      CSIDL_STARTMENU = 0x000b,        // <user name>\Start Menu
      CSIDL_MYDOCUMENTS = 0x000c,      // logical "My Documents" desktop icon
      CSIDL_MYMUSIC = 0x000d,          // "My Music" folder
      CSIDL_MYVIDEO = 0x000e,          // "My Videos" folder
      CSIDL_DESKTOPDIRECTORY = 0x0010,        // <user name>\Desktop
      CSIDL_DRIVES = 0x0011,                  // My Computer
      CSIDL_NETWORK = 0x0012,                 // Network Neighborhood (My Network Places)
      CSIDL_NETHOOD = 0x0013,                 // <user name>\nethood
      CSIDL_FONTS = 0x0014,                   // windows\fonts
      CSIDL_TEMPLATES = 0x0015,
      CSIDL_COMMON_STARTMENU = 0x0016,        // All Users\Start Menu
      CSIDL_COMMON_PROGRAMS = 0X0017,         // All Users\Start Menu\Programs
      CSIDL_COMMON_STARTUP = 0x0018,          // All Users\Startup
      CSIDL_COMMON_DESKTOPDIRECTORY = 0x0019, // All Users\Desktop
      CSIDL_APPDATA = 0x001a,                 // <user name>\Application Data
      CSIDL_PRINTHOOD = 0x001b,               // <user name>\PrintHood
      CSIDL_LOCAL_APPDATA = 0x001c,           // <user name>\Local Settings\Applicaiton Data (non roaming)
      CSIDL_ALTSTARTUP = 0x001d,              // non localized startup
      CSIDL_COMMON_ALTSTARTUP = 0x001e,       // non localized common startup
      CSIDL_COMMON_FAVORITES = 0x001f,
      CSIDL_INTERNET_CACHE = 0x0020,
      CSIDL_COOKIES = 0x0021,
      CSIDL_HISTORY = 0x0022,
      CSIDL_COMMON_APPDATA = 0x0023,          // All Users\Application Data
      CSIDL_WINDOWS = 0x0024,                 // GetWindowsDirectory()
      CSIDL_SYSTEM = 0x0025,                  // GetSystemDirectory()
      CSIDL_PROGRAM_FILES = 0x0026,           // C:\Program Files
      CSIDL_MYPICTURES = 0x0027,              // C:\Program Files\My Pictures
      CSIDL_PROFILE = 0x0028,                 // USERPROFILE
      CSIDL_SYSTEMX86 = 0x0029,               // x86 system directory on RISC
      CSIDL_PROGRAM_FILESX86 = 0x002a,        // x86 C:\Program Files on RISC
      CSIDL_PROGRAM_FILES_COMMON = 0x002b,    // C:\Program Files\Common
      CSIDL_PROGRAM_FILES_COMMONX86 = 0x002c, // x86 Program Files\Common on RISC
      CSIDL_COMMON_TEMPLATES = 0x002d,        // All Users\Templates
      CSIDL_COMMON_DOCUMENTS = 0x002e,        // All Users\Documents
      CSIDL_COMMON_ADMINTOOLS = 0x002f,       // All Users\Start Menu\Programs\Administrative Tools
      CSIDL_ADMINTOOLS = 0x0030,              // <user name>\Start Menu\Programs\Administrative Tools
      CSIDL_CONNECTIONS = 0x0031,             // Network and Dial-up Connections
      CSIDL_COMMON_MUSIC = 0x0035,            // All Users\My Music
      CSIDL_COMMON_PICTURES = 0x0036,         // All Users\My Pictures
      CSIDL_COMMON_VIDEO = 0x0037,            // All Users\My Video
      CSIDL_CDBURN_AREA = 0x003b              // USERPROFILE\Local Settings\Application Data\Microsoft\CD Burning
    }

    [DllImport("shell32.dll", SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool SHGetPathFromIDListW(IntPtr pidl, [MarshalAs(UnmanagedType.LPTStr)] StringBuilder pszPath);

    [DllImport("shell32.dll", SetLastError = true)]
    static extern int SHGetSpecialFolderLocation(IntPtr hwndOwner, CSIDL nFolder, ref IntPtr ppidl);

    [StructLayout(LayoutKind.Sequential)]
    public struct RECT
    {
      public int left;
      public int top;
      public int right;
      public int bottom;
    }

    [StructLayout(LayoutKind.Sequential)]
    private struct PROCESSENTRY32
    {
      public uint dwSize;
      public uint cntUsage;
      public uint th32ProcessID;
      public IntPtr th32DefaultHeapID;
      public uint th32ModuleID;
      public uint cntThreads;
      public uint th32ParentProcessID;
      public int pcPriClassBase;
      public uint dwFlags;
      [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
      public string szExeFile;
    }

    private const uint TH32CS_SNAPPROCESS = 0x00000002;

    [DllImport("user32.dll")]
    public static extern IntPtr FindWindow(string lpClassName, String lpWindowName);

    [DllImport("user32.dll")]
    public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);

    [DllImport("user32.dll")]
    public static extern bool GetClientRect(IntPtr hWnd, out RECT lpRect);

    private const int WM_CLOSE = 0x10;
    private const int WM_DESTROY = 0x2;

    [DllImport("user32.dll")]
    public static extern IntPtr SendMessage(IntPtr hWnd, uint msg, int wParam, int lParam);

    [DllImport("kernel32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
    public static extern Int64 GetTickCount();

    [DllImport("kernel32.dll")]
    private static extern int Process32First(IntPtr hSnapshot,
                                     ref PROCESSENTRY32 lppe);

    [DllImport("kernel32.dll")]
    private static extern int Process32Next(IntPtr hSnapshot,
                                    ref PROCESSENTRY32 lppe);

    [DllImport("kernel32.dll", SetLastError = true)]
    private static extern IntPtr CreateToolhelp32Snapshot(uint dwFlags,
                                                   uint th32ProcessID);

    [DllImport("kernel32.dll", SetLastError = true)]
    private static extern bool CloseHandle(IntPtr hSnapshot);
    private const int WM_MouseMove = 0x0200;

    public static void RefreshTrayArea()
    {

      RECT rect;

      IntPtr systemTrayContainerHandle = FindWindow("Shell_TrayWnd", null);
      IntPtr systemTrayHandle = FindWindowEx(systemTrayContainerHandle, IntPtr.Zero, "TrayNotifyWnd", null);
      IntPtr sysPagerHandle = FindWindowEx(systemTrayHandle, IntPtr.Zero, "SysPager", null);
      IntPtr notificationAreaHandle = FindWindowEx(sysPagerHandle, IntPtr.Zero, "ToolbarWindow32", null);
      GetClientRect(notificationAreaHandle, out rect);
      for (var x = 0; x < rect.right; x += 5)
        for (var y = 0; y < rect.bottom; y += 5)
          SendMessage(notificationAreaHandle, WM_MouseMove, 0, (y << 16) + x);
    }

    public static bool IsProcessRunning(string applicationName)
    {
      IntPtr handle = IntPtr.Zero;
      try
      {
        // Create snapshot of the processes
        handle = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
        PROCESSENTRY32 info = new PROCESSENTRY32();
        info.dwSize = (uint)System.Runtime.InteropServices.
                      Marshal.SizeOf(typeof(PROCESSENTRY32));

        // Get the first process
        int first = Process32First(handle, ref info);

        // While there's another process, retrieve it
        do
        {
          if (string.Compare(info.szExeFile,
                applicationName, true) == 0)
          {
            return true;
          }
        }
        while (Process32Next(handle, ref info) != 0);
      }
      catch
      {
        throw;
      }
      finally
      {
        // Release handle of the snapshot
        CloseHandle(handle);
        handle = IntPtr.Zero;
      }
      return false;
    }

    public static string GetSpecialFolder(CSIDL nFolder)
    {
      IntPtr ptrAppData = IntPtr.Zero;
      SHGetSpecialFolderLocation(IntPtr.Zero, nFolder, ref ptrAppData);
      string dirAppData = "";
      StringBuilder sbAppData = new StringBuilder(MAX_PATH);

      if (true == SHGetPathFromIDListW(ptrAppData, sbAppData))
      {
        dirAppData = sbAppData.ToString();
      }

      sbAppData = null;
      Marshal.FreeCoTaskMem(ptrAppData);
      return dirAppData;
    }

  }
}