GLib.MainContext.add_poll

### Method

# GLib MainContextadd_poll

#### Declaration

    void
    g_main_context_add_poll (
      GMainContext* context,
      GPollFD* fd,
      gint priority
    )

#### Description

Adds a file descriptor to the set of file descriptors polled for this context. This will very seldom be used directly. Instead a typical event source will use `g_source_add_unix_fd()` instead.

#### Parameters

`fd`

  Type: `GPollFD`

  A `GPollFD` structure holding information about a file descriptor to watch.

  The data is owned by the caller of the method.

`priority`

  Type: `gint`

  The priority for this file descriptor which should be the same as the priority used for `g_source_attach()` to ensure that the file descriptor is polled whenever the results may be needed.