QT 断开信号槽连接

在QT中，可以使用QObject类的disconnect()函数来断开信号与槽的连接。disconnect()函数有多种用法，具体如下：

1. 断开与一个对象所有的信号的所有关联：
disconnect(sender, 0, 0, 0);
等价于：sender->disconnect();

2. 断开与一个指定信号的所有关联：
disconnect(sender, SIGNAL(single1()), 0, 0);
等价于：sender->disconnect(SIGNAL(single1()));

3. 断开与一个指定接收者receiver的所有关联：
disconnect(sender, 0, receiver, 0);
等价于：sender->disconnect(SIGNAL(single1()));

4. 断开指定信号与槽的关联：
disconnect(sender, SIGNAL(single1()), receiver, SLOT(slotFun()));
等价于：disconnect(myConnection);
其中，myConnection为connect()函数的返回值。

总结起来，disconnect()函数可以用于断开明确指定的信号与槽的连接，如果连接断开成功则返回true，否则返回false。\[1\]\[2\]\[3\]
#### 引用[.reference_title]
- *1* [Qt - 元对象系统 - 信号与槽_信号与槽连接(断开连接)](https://blog.csdn.net/m0_45867846/article/details/107597340)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^control,239^v3^insert_chatgpt"}} ] [.reference_item]
- *2* [qt中信号槽断开连接](https://blog.csdn.net/JimBraddock/article/details/84170461)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^control,239^v3^insert_chatgpt"}} ] [.reference_item]
- *3* [Qt断开信号与槽的方法，Qt信号的处理 (connect和disconnect和blockSignals的使用方法)](https://blog.csdn.net/u011555996/article/details/125011377)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^control,239^v3^insert_chatgpt"}} ] [.reference_item]
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