Gio.PollableOutputStream.can_poll

### Method

# Gio PollableOutputStreamcan_poll

since: 2.28

#### Declaration

    gboolean
    g_pollable_output_stream_can_poll (
      GPollableOutputStream* stream
    )

#### Description

Checks if `stream` is actually pollable. Some classes may implement `GPollableOutputStream` but have only certain instances of that class be pollable. If this method returns `FALSE`, then the behavior of other `GPollableOutputStream` methods is undefined.

For any given stream, the value returned by this method is constant; a stream cannot switch from pollable to non-pollable or vice versa.

Available since: 2.28

#### Return value

Type: `gboolean`

`TRUE` if `stream` is pollable, `FALSE` if not.