SignalUtils.hpp

#pragma once
#include <QComboBox>
#include <QSpinBox>
 
struct SignalUtils
{
  static constexpr auto QSpinBox_valueChanged_int()
  {
    return static_cast<void (QSpinBox::*)(int)>(&QSpinBox::valueChanged);
  }
  static constexpr auto QDoubleSpinBox_valueChanged_double()
  {
    return static_cast<void (QDoubleSpinBox::*)(double)>(&QDoubleSpinBox::valueChanged);
  }
  static constexpr auto QComboBox_currentIndexChanged_int()
  {
    return static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged);
  }
  static constexpr auto QComboBox_activated_int()
  {
    return static_cast<void (QComboBox::*)(int)>(&QComboBox::activated);
  }
 
  template <typename Spinbox_T>
  static constexpr auto SpinBox_valueChanged();
};
 
template <>
inline constexpr auto SignalUtils::SpinBox_valueChanged<QSpinBox>()
{
  return QSpinBox_valueChanged_int();
}
template <>
inline constexpr auto SignalUtils::SpinBox_valueChanged<QDoubleSpinBox>()
{
  return QDoubleSpinBox_valueChanged_double();
}