I have a .NET Compact Framework app that can runs on three windows machines (Desktop windows and two WinCE machines) and on the WinCE devices, the process never terminates on exit, even if I call Application.Exit(). Besides .NET, it uses one COM component (which does everything on the UI thread). If I break into the debugger after exitting, Visual Studio shows only one thread and a completely blank call stack.

What could possibly cause this?

Update: My process is terminating on the desktop but not the WinCE machines. I tried to force the process to terminate with the following code, but it doesn't work:

[DllImport("coredll.dll")]
static extern int TerminateProcess(IntPtr hProcess, uint uExitCode);

static public void ExitProcess()
{
    if (Platform.IsWindowsCE)
        TerminateProcess(new IntPtr(-1), 0);
    Application.Exit();
}

There are also supposed to be ExitProcess() and GetCurrentProcess() APIs like the following, but if I try to call them, I get EntryPointNotFoundException. Therefore I am using TerminateProcess(-1, 0) because the documentation for the desktop version of GetCurrentProcess claims that it simply returns -1.

[DllImport("coredll.dll")]
static extern int ExitProcess(IntPtr hProcess);
[DllImport("coredll.dll")]
static extern IntPtr GetCurrentProcess();

Even if I do this:

static public void ExitProcess()
{
    if (Platform.IsWindowsCE)
        TerminateProcess(new IntPtr(-1), 0);
    Application.Exit();

    throw new Exception("Trying to force quit.");
}

A fatal error dialog appears with a helpful "Quit" button, but pushing the button still does not cause the process to terminate on either machine!