#include "CFDStructSigsCenter.h" CFDStructSigsCenter* CFDStructSigsCenter::m_instance = nullptr; CFDStructSigsCenter::CFDStructSigsCenter(QObject *parent) : QObject(parent) { } CFDStructSigsCenter *CFDStructSigsCenter::getInstance() { if (m_instance == nullptr) { m_instance = new CFDStructSigsCenter; } return m_instance; }