Method

GLibMainContextquery

Declaration 

gint
g_main_context_query (
  GMainContext* context,
  gint max_priority,
  gint* timeout_,
  GPollFD* fds,
  gint n_fds
)

Description

Determines information necessary to poll this main loop. You should be careful to pass the resulting fds array and its length n_fds as is when calling g_main_context_check(), as this function relies on assumptions made when the array is filled.

You must have successfully acquired the context with g_main_context_acquire() before you may call this function.

Parameters

max_priority

Type: gint

Maximum priority source to check.

timeout_

Type: gint*

Location to store timeout to be used in polling.

The argument will be set by the function.
fds

Type: An array of GPollFD

Location to store GPollFD records that need to be polled.

The argument will be set by the function.
The length of the array is specified in the n_fds argument.
The data is owned by the caller of the function.
n_fds

Type: gint

Length of fds.

Return value

Type: gint

The number of records actually stored in fds, or, if more than n_fds records need to be stored, the number of records that need to be stored.