This may be used to disconnect the referred slot at any time (disconnect()).
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#include <sigc++/connection.h>
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| connection () noexcept |
| Constructs an empty connection object.
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| connection (const connection & c) |
| Constructs a connection object copying an existing one.
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| connection (slot_base & slot) |
| Constructs a connection object from a slot object.
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| ~connection () |
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bool | block (bool should_block=true) noexcept |
| Sets or unsets the blocking state of this connection.
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bool | blocked () const noexcept |
| Returns whether the connection is blocked.
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bool | connected () const noexcept |
| Returns whether the connection is still active.
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void | disconnect () |
| Disconnects the referred slot.
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bool | empty () const noexcept |
| Returns whether the connection is still active.
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| operator bool () const noexcept |
| Returns whether the connection is still active.
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connection & | operator= (const connection & src) |
| Overrides this connection object copying another one.
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bool | unblock () noexcept |
| Unsets the blocking state of this connection.
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This may be used to disconnect the referred slot at any time (disconnect()).
If the slot has already been destroyed, disconnect() does nothing. empty() or operator bool() can be used to test whether the connection is still active. The connection can be blocked (block(), unblock()).
◆ connection() [1/3]
sigc::connection::connection |
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noexcept |
Constructs an empty connection object.
◆ connection() [2/3]
sigc::connection::connection |
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const connection & |
c | ) |
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Constructs a connection object copying an existing one.
- Parameters
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c | The connection object to make a copy from. |
◆ connection() [3/3]
sigc::connection::connection |
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slot_base & |
slot | ) |
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explicit |
Constructs a connection object from a slot object.
- Parameters
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slot | The slot to operate on. |
◆ ~connection()
sigc::connection::~connection |
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◆ block()
bool sigc::connection::block |
( |
bool |
should_block = true | ) |
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noexcept |
Sets or unsets the blocking state of this connection.
See slot_base::block() for details.
- Parameters
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should_block | Indicates whether the blocking state should be set or unset. |
- Returns
true
if the connection has been in blocking state before.
◆ blocked()
bool sigc::connection::blocked |
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const |
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noexcept |
Returns whether the connection is blocked.
- Returns
true
if the connection is blocked.
◆ connected()
bool sigc::connection::connected |
( |
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const |
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noexcept |
Returns whether the connection is still active.
- Returns
true
if the connection is still active.
◆ disconnect()
void sigc::connection::disconnect |
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Disconnects the referred slot.
◆ empty()
bool sigc::connection::empty |
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const |
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noexcept |
Returns whether the connection is still active.
- Returns
false
if the connection is still active.
◆ operator bool()
sigc::connection::operator bool |
( |
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const |
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explicitnoexcept |
Returns whether the connection is still active.
- Returns
true
if the connection is still active.
◆ operator=()
Overrides this connection object copying another one.
- Parameters
-
src | The connection object to make a copy from. |
◆ unblock()
bool sigc::connection::unblock |
( |
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noexcept |
Unsets the blocking state of this connection.
- Returns
true
if the connection has been in blocking state before.