c++ – integration of windows message loop (PeekMessage -> DispatchMessage) with boost.asio

I have a Windows application that uses boost.asio for I/O.
but the asio’s io_context::run() executes in a separate thread, because of WinMain() function has while() {} loop with PeekMessage() and DispatchMessage() functions.

pseudocode:

int WinMain(...) {

   asio::io_context ios;
   std::thread thread{[&ios](){ ios.run(); }};

   MSG msg;
   while ( ::PeekMessage(&msg, ...) ) {
      switch ( msg.message ) {
         ...
      }
      ::DispatchMessage(&msg);
   }
}

my goal is to get rid of the extra thread.

so, my question is: how can I integrate windows message loop into asio event loop?