1 using System;
 2 using System.Runtime.InteropServices;
 3
 4 namespace Macroresolute
 5 {
 6     public static class ProcessEx
 7     {
 8         private static class NativeMethods
 9         {
10             internal const uint GW_OWNER = 4;
11
12             internal delegate bool EnumWindowsProc(IntPtr hWnd, IntPtr lParam);
13
14             [DllImport("User32.dll", CharSet = CharSet.Auto)]
15             internal static extern bool EnumWindows(EnumWindowsProc lpEnumFunc, IntPtr lParam);
16
17             [DllImport("User32.dll", CharSet = CharSet.Auto)]
18             internal static extern int GetWindowThreadProcessId(IntPtr hWnd, out IntPtr lpdwProcessId);
19
20             [DllImport("User32.dll", CharSet = CharSet.Auto)]
21             internal static extern IntPtr GetWindow(IntPtr hWnd, uint uCmd);
22
23             [DllImport("User32.dll", CharSet = CharSet.Auto)]
24             internal static extern bool IsWindowVisible(IntPtr hWnd);
25         }
26
27         public static IntPtr GetMainWindowHandle(int processId)
28         {
29             IntPtr MainWindowHandle = IntPtr.Zero;
30
31             NativeMethods.EnumWindows(new NativeMethods.EnumWindowsProc((hWnd, lParam) =>
32             {
33                 IntPtr PID;
34                 NativeMethods.GetWindowThreadProcessId(hWnd, out PID);
35
36                 if (PID == lParam &&
37                     NativeMethods.IsWindowVisible(hWnd) &&
38                     NativeMethods.GetWindow(hWnd, NativeMethods.GW_OWNER) == IntPtr.Zero)
39                 {
40                     MainWindowHandle = hWnd;
41                     return false;
42                 }
43
44                 return true;
45
46             }), new IntPtr(processId));
47
48             return MainWindowHandle;
49         }
50     }
51 }52