How do I make a minimal Windows application in Haskell? I know there are Win API bindings in the libraries, and of course the ffi lets you call into and out of C, but I have no sense of how to bring it all together. I can't find any samples either. Is the Haskell code the "main" application and you just ffi into the Win API? Or does it ffi into a win_main.c that I write? Or is the win_main.c the "main" application and it calls into Haskell? Here is what I am talking about by a "minimal Windows application" (written in psuedo C code). #define WIN32_LEAN_AND_MEAN #include LRESULT CALLBACK windowsProcedure(..) { switch(message) { case WM_CLOSE: PostQuitMessage(0); return 0; } return DefWindowProc(..); } int APIENTRY WinMain(..){ WNDCLASS window_class; RegisterClass(&window_class) window = CreateWindow(..); ShowWindow(..); while(true) { /* do whatever */ while(PeekMessage(..)) if(msg.message == WM_QUIT) return msg.wParam; else DispatchMessage(&msg); } return 0; }