当你遇到错误 C2338,并且错误信息指出 "static_assert failed: 'signal and slot arguments are not compatible'" 时,这通常意味着你尝试连接(connect)的信号和槽的参数类型不匹配。 解决步骤 检查信号和槽的声明: 确认信号的参数类型和数量与槽的参数类型和数量完全一致。 例如,如果信号声明为 void signalName(int...
信号函数sig_sendData(QString, int)变成了sig_sendData(QString, QByteArray),槽函数的参数类型未做相应的修改。 新语法编译时会报错“Signal and slot arguments are not compatible.”,但是不会定位到错误发生的具体的信号/槽连接处,给调试和寻找错误带来了很大的不方便。 旧语法则会直接在信号/槽连接那里就报错...
简介:error: static assertion failed: Signal and slot arguments are not compatible. 编译错误 /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:314: error: static assertion failed: Signal and slot arguments are not compatible.314 | Q_STATIC_ASSERT_X((FunctorArgumentCount >= 0),| ^~~~/...
from PyQt4.QtCore import QObject, pyqtSignal class Foo(QObject): # Define a new signal called 'trigger' that has no arguments. trigger = pyqtSignal() def connect_and_emit_trigger(self): # Connect the trigger signal to a slot. self.trigger.connect(self.handle_trigger) # Emit the signal...
Next, some arguments are added. This is a modifiedHello Worldversion. Some arguments are added to the slot and a new signal is created. #!/usr/bin/env python import sys from PySide importQtCore # define a new slot that receives a string and has ...
Connecting Signals Using Keyword Arguments It is also possible to connect signals by passing a slot as a keyword argument corresponding to the name of the signal when creating an object, or using thepyqtConfigure()method ofQObject. For example the following three fragments are equivalent: ...
These types of connections are very brittle, as a simple object rename would break your code. In Qt 5 thepointer-to-member-functionconnect syntax is prefered as it catches errors at compile-time. This check simply warns for any slot named likeon_*_*, because even if you're not using.ui...
// of signal/slot usage (i.e. all objects using signals and slots are // created and destroyed from a single thread). Behaviour if objects are // destroyed concurrently is undefined (i.e. you'll get the occasional // segmentation fault/memory exception). ...
Qt 5 provides support for connecting signals to arbitrary functions out of the box and to lambdas when using C++11. QtSignalForwarder emulates this for Qt 4. As well as being able to connect signals to functions that are not slots, this also provides a way to pass additional arguments to...
1、Qt563x86vs2015,遇到如下 编译错误: error: C2338: The slot requires more arguments than the signal provides. 更多信息如下图: ZC:一直以为是 新写的 connect关联 有什么错误,后来才发现 确实是 我写的 信号和槽 的参数不匹配,但是 并不是 我最新写的 那个connect,而是之前写的 connect... ! ! !