/**
* GApplicationFlags:
* @G_APPLICATION_NON_UNIQUE: Make no attempts to do any of the typical
* single-instance application negotiation, even if the application
* ID is given. The application neither attempts to become the
* owner of the application ID nor does it check if an existing
* owner already exists. Everything occurs in the local process.
* Since: 2.30.
*
* Flags used to define the behaviour of a #GApplication.
*
* Since: 2.28
**/
GApplicationFlagsG_APPLICATION_NON_UNIQUEMake no attempts to do any of the typical
single-instance application negotiation, even if the application
ID is given. The application neither attempts to become the
owner of the application ID nor does it check if an existing
owner already exists. Everything occurs in the local process.
Since: 2.30.Flags used to define the behaviour of a #GApplication.since2.28
= 0. Since 2.36 this may
* be %NULL, in which case the effect is as if the function always
* returns %FALSE with a timeout of -1. If @prepare returns a
* timeout and the source also has a 'ready time' set then the
* nearer of the two will be used.
* @check: Called after all the file descriptors are polled. The source
* should return %TRUE if it is ready to be dispatched. Note that some
* time may have passed since the previous prepare function was called,
* so the source should be checked again here. Since 2.36 this may
* be %NULL, in which case the effect is as if the function always
* returns %FALSE.
* @dispatch: Called to dispatch the event source, after it has returned
* %TRUE in either its @prepare or its @check function. The @dispatch
* function is passed in a callback function and data. The callback
* function may be %NULL if the source was never connected to a callback
* using g_source_set_callback(). The @dispatch function should call the
* callback function with @user_data and whatever additional parameters
* are needed for this type of event source.
* @finalize: Called when the source is finalized.
*
* The GSourceFuncs struct contains a table of
* functions used to handle event sources in a generic manner.
*
* For idle sources, the prepare and check functions always return %TRUE
* to indicate that the source is always ready to be processed. The prepare
* function also returns a timeout value of 0 to ensure that the poll() call
* doesn't block (since that would be time wasted which could have been spent
* running the idle function).
*
* For timeout sources, the prepare and check functions both return %TRUE
* if the timeout interval has expired. The prepare function also returns
* a timeout value to ensure that the poll() call doesn't block too long
* and miss the next timeout.
*
* For file descriptor sources, the prepare function typically returns %FALSE,
* since it must wait until poll() has been called before it knows whether
* any events need to be processed. It sets the returned timeout to -1 to
* indicate that it doesn't mind how long the poll() call blocks. In the
* check function, it tests the results of the poll() call to see if the
* required condition has been met, and returns %TRUE if so.
*/]]>
GSourceFuncsprepareCalled before all the file descriptors are polled. If the
source can determine that it is ready here (without waiting for the
results of the poll() call) it should return %TRUE. It can also return
a @timeout_ value which should be the maximum timeout (in milliseconds)
which should be passed to the poll() call. The actual timeout used will
be -1 if all sources returned -1, or it will be the minimum of all the
@timeout_ values returned which were >= 0. Since 2.36 this may
be %NULL, in which case the effect is as if the function always
returns %FALSE with a timeout of -1. If @prepare returns a
timeout and the source also has a 'ready time' set then the
nearer of the two will be used.checkCalled after all the file descriptors are polled. The source
should return %TRUE if it is ready to be dispatched. Note that some
time may have passed since the previous prepare function was called,
so the source should be checked again here. Since 2.36 this may
be %NULL, in which case the effect is as if the function always
returns %FALSE.dispatchCalled to dispatch the event source, after it has returned
%TRUE in either its @prepare or its @check function. The @dispatch
function is passed in a callback function and data. The callback
function may be %NULL if the source was never connected to a callback
using g_source_set_callback(). The @dispatch function should call the
callback function with @user_data and whatever additional parameters
are needed for this type of event source.finalizeCalled when the source is finalized.GSourceFuncs struct contains a table of
functions used to handle event sources in a generic manner.
For idle sources, the prepare and check functions always return %TRUE
to indicate that the source is always ready to be processed. The prepare
function also returns a timeout value of 0 to ensure that the poll() call
doesn't block (since that would be time wasted which could have been spent
running the idle function).
For timeout sources, the prepare and check functions both return %TRUE
if the timeout interval has expired. The prepare function also returns
a timeout value to ensure that the poll() call doesn't block too long
and miss the next timeout.
For file descriptor sources, the prepare function typically returns %FALSE,
since it must wait until poll() has been called before it knows whether
any events need to be processed. It sets the returned timeout to -1 to
indicate that it doesn't mind how long the poll() call blocks. In the
check function, it tests the results of the poll() call to see if the
required condition has been met, and returns %TRUE if so.]]>