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sigc::trackable Struct Reference
[Signals]
Base class for objects with auto-disconnection.
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Inheritance diagram for sigc::trackable:
[legend]List of all members.
Detailed Description
Base class for objects with auto-disconnection.
trackable must be inherited when objects shall automatically invalidate slots referring to them on destruction. A slot built from a member function of a trackable derived type installs a callback that is invoked when the trackable object is destroyed or overwritten.
add_destroy_notify_callback() and remove_destroy_notify_callback() can be used to manually install and remove callbacks when notification of the object dying is needed.
notify_callbacks() invokes and removes all previously installed callbacks and can therefore be used to disconnect from all signals.
Note that there is no virtual destructor. Don't use trackable*
as pointer type for managing your data or the destructors of your derived types won't be called when deleting your objects.
Member Typedef Documentation
Constructor & Destructor Documentation
sigc::trackable::trackable |
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sigc::trackable::trackable |
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const trackable& |
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Member Function Documentation
void sigc::trackable::add_destroy_notify_callback |
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void* |
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func_destroy_notify |
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Add a callback that is executed (notified) when the trackable object is detroyed.
- Parameters:
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| data | Passed into func upon notification. |
| func | Callback executed upon destruction of the object. |
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void sigc::trackable::notify_callbacks |
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Execute and remove all previously installed callbacks.
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void sigc::trackable::remove_destroy_notify_callback |
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void* |
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The documentation for this struct was generated from the following file:
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