glibmm: Glib::SignalIdle Class Reference
#include <glibmm/main.h>
Public Member Functions | |
sigc::connection | connect (const sigc::slot< bool()>& slot, int priority=PRIORITY_DEFAULT_IDLE) |
Connects an idle handler. More... | |
void | connect_once (const sigc::slot< void()>& slot, int priority=PRIORITY_DEFAULT_IDLE) |
Connects an idle handler that runs only once. More... | |
Member Function Documentation
sigc::connection Glib::SignalIdle::connect | ( | const sigc::slot< bool()> & | slot, |
int | priority = PRIORITY_DEFAULT_IDLE |
||
) |
Connects an idle handler.
is equivalent to:
This method is not thread-safe. You should call it, or manipulate the returned sigc::connection object, only from the thread where the SignalIdle object's MainContext runs.
- Parameters
-
slot A slot to call when the main loop is idle. If idle_handler()
returnsfalse
the handler is disconnected.priority The priority of the new event source.
- Returns
- A connection handle, which can be used to disconnect the handler.
void Glib::SignalIdle::connect_once | ( | const sigc::slot< void()> & | slot, |
int | priority = PRIORITY_DEFAULT_IDLE |
||
) |
Connects an idle handler that runs only once.
This method takes a function pointer to a function with a void return and no parameters. After running once it is not called again.
Because sigc::trackable is not thread-safe, if the slot represents a non-static method of a class deriving from sigc::trackable, and the slot is created by sigc::mem_fun(), connect_once() should only be called from the thread where the SignalIdle object's MainContext runs. You can use, say, boost::bind() or, in C++11, std::bind() or a C++11 lambda expression instead of sigc::mem_fun().
- See also
- connect()
- Parameters
-
slot A slot to call when the main loop is idle. For example: void on_idle_once()priority The priority of the new event source.
- Examples:
- thread/dispatcher.cc.