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Slots
[Functors]

Slots are type-safe representations of callback methods and functions. More...

Compounds

class  slot
 Convenience wrapper for the numbered sigc::slot# templates. More...

class  slot0
 Converts an arbitrary functor to a unified type which is opaque. More...

class  slot1
 Converts an arbitrary functor to a unified type which is opaque. More...

class  slot2
 Converts an arbitrary functor to a unified type which is opaque. More...

class  slot3
 Converts an arbitrary functor to a unified type which is opaque. More...

class  slot4
 Converts an arbitrary functor to a unified type which is opaque. More...

class  slot5
 Converts an arbitrary functor to a unified type which is opaque. More...

class  slot6
 Converts an arbitrary functor to a unified type which is opaque. More...

class  slot7
 Converts an arbitrary functor to a unified type which is opaque. More...

class  slot_base
 Base type for slots. More...


Detailed Description

Slots are type-safe representations of callback methods and functions.

A Slot can be constructed from any function, regardless of whether it is a global function, a member method, static, or virtual.

Use the sigc::mem_fun() and sigc::ptr_fun() template functions to get a sigc::slot, like so:

 sigc::slot<void, int> sl = sigc::mem_fun(someobj,& SomeClass::somemethod);

or

 sigc::slot<void, int> sl = sigc::ptr_fun(&somefunction);

or

 m_Button.signal_clicked().connect( sigc::mem_fun(*this, &MyWindow::on_button_clicked) );

The compiler will complain if SomeClass::somemethod, etc. have the wrong signature.

You can also pass slots as method parameters where you might normally pass a function pointer.


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