no matching functionfor call to QObject::connect(QSpinBox*&, <unresolved overloaded function type>, QSlider*&, void (QAbstractSlider::*)(int)) 解决方法 1、强制类型转换 connect(ui->spinBox_luminosity,static_cast<void(QSpinBox::*)(int)>(&QSpinBox::valueChanged), ui->horizontalSlider_luminosity...
error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall error LNK2019: unresolved external symbol "__declspec(dllimport) public: class std::basic_string<char,struct std::char_traits<char>, error LNK2019: unresolved external symbol "__declspec(dllimport) public: void _...