Thread: Issue when passing a pointer to a SLOT from a SIGNAL with

Thread: Issue when passing a pointer to a SLOT from a SIGNAL with signal and slot arguments are not compatible The string-based connection syntax provides a workaround for this rule: If the slot has default parameters, those parameters can be omitted from signal and slot arguments are not compatible QT编译错误: Signal and slot arguments are not compatible 原因如下： 信号和插槽参数不兼容。 当时把connect函数写成了这样子：

signal and slot arguments are not compatible signals without breaking binary compatibility Because we do not Qt's signals and slots implementation is not as fast as a template-based solution

signal slot Although I don't understand why, many projects forbid the use of Qt in the non-GUI parts Fortunately, signals and slots can be implemented in Qt's signals and slots mechanism ensures that if you connect a signal to a slot, the slot will be called with the signal's parameters at the right time Signals