I eventually found a way to do this, so I am going answer my own question so maybe someone in the future with the same problem could find it useful.
This is the class with the WinApiFunctions:
public class WinAPIFunctions
{
//Used to get Handle for Foreground Window
[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern IntPtr GetForegroundWindow();
//Used to get ID of any Window
[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern int GetWindowThreadProcessId(IntPtr hWnd, out int lpdwProcessId);
public delegate bool WindowEnumProc(IntPtr hwnd, IntPtr lparam);
[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool EnumChildWindows(IntPtr hwnd, WindowEnumProc callback, IntPtr lParam);
public static int GetWindowProcessId(IntPtr hwnd)
{
int pid;
GetWindowThreadProcessId(hwnd, out pid);
return pid;
}
public static IntPtr GetforegroundWindow()
{
return GetForegroundWindow();
}
}
And this is the class I used to test if it would work. I used it in a simple console program that just writes out the name of the process that has current focus:
class FindHostedProcess
{
public Timer MyTimer { get; set; }
private Process _realProcess;
public FindHostedProcess()
{
MyTimer = new Timer(TimerCallback, null, 0, 1000);
Console.ReadKey();
}
private void TimerCallback(object state)
{
var foregroundProcess = Process.GetProcessById(WinAPIFunctions.GetWindowProcessId(WinAPIFunctions.GetforegroundWindow()));
if (foregroundProcess.ProcessName == "ApplicationFrameHost")
{
foregroundProcess = GetRealProcess(foregroundProcess);
}
Console.WriteLine(foregroundProcess.ProcessName);
}
private Process GetRealProcess(Process foregroundProcess)
{
WinAPIFunctions.EnumChildWindows(foregroundProcess.MainWindowHandle, ChildWindowCallback, IntPtr.Zero);
return _realProcess;
}
private bool ChildWindowCallback(IntPtr hwnd, IntPtr lparam)
{
var process = Process.GetProcessById(WinAPIFunctions.GetWindowProcessId(hwnd));
if (process.ProcessName != "ApplicationFrameHost")
{
_realProcess = process;
}
return true;
}
}
