#include <stdio.h>
#include <fcntl.h>
#include <sys/select.h>
#include <errno.h>
#include <windows.h>

// gcc -o dev-windows-select-test.exe dev-windows-select-test.c -Wall -mwindows

int main(int argc, char *argv[])
{
  int fd = open("/dev/windows", O_RDONLY);

  if (PostMessage(NULL, WM_USER, 0, 0) != 0)
    printf("PostMessage succeeded\n");
  else
    printf("PostMessage failed\n");

  if (argc <= 1)
    {
      MSG msg;
      if (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE))
        printf("PeekMessage reports a message available\n");
    }

  struct timeval timeout;
  timeout.tv_sec = 5;
  timeout.tv_usec = 0;

  fd_set readfds;
  FD_ZERO(&readfds);
  FD_SET(fd, &readfds);

  int rc = select(fd+1, &readfds, NULL, NULL, &timeout);
  printf("select returned %d %s\n", rc, strerror(errno));

  return 0;
}