R – Why won’t the program terminate

compact-frameworknetprocessterminationwindows-ce

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 throwing an unhandled exception won't do it.

Update 2: the simplest program that causes the problem merely creates the COM object.

static void Main()
{
    new FastNavLib.MapControl();
}

C++ programs that use the COM component do not exhibit this behavior, so my C++ COM component must have some bizarre interaction with the .NET framework which I will investigate.

Best Answer

look like you have some threads still running in your application.

Make sure you have terminate every child thread before exiting the main one.

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