Can's access WinRT object in the thread which created by CreateThread?

Question

Hi All,

I met a problem when access WinRT object in the thread which created by Win32 API:CreateThread().

I store the WinRT object as a class member and to access it by another thread.

But it will cause crash issue when I try access any member variable or method of the WinRT object.

Is it the limitation of WinRT object? Or Did I do anything wrong?

Below is the code piece I wrote:

HRESULT UpdateThread::Start(WriteableBitmap^ target_bitmap)
{
 m_bitmap = target_bitmap);
 m_thread_handle = CreateThread(NULL,
           0,
           ThreadProc,
           (LPVOID)this,
           0,
           &m_threadId);

 return S_OK;
}

DWORD WINAPI UpdateThread::ThreadProc(LPVOID pParam)
{
 UpdateThread* p_this = (UpdateThread *)pParam;

 while (!p_this->m_stop)
 {
  p_this->m_bitmap->Invalidate();    // crash there!
  Sleep(1);
 }
 return 0;
}