#pragma once
#include <QDebug>
namespace renderive {
template <typename T>
class Singleton_Widget {
public:
    static T* instance() {
        if (!instance_value) {
            qInfo() << "error Singleton_Widget 未创建" << instance_value;
        }
        return instance_value;
    }
    Singleton_Widget() {
        if (instance_value) {
            qInfo() << "error Singleton_Widget 重复创建" << instance_value;
        }
        instance_value = static_cast<T*>(this);
    }
    virtual ~Singleton_Widget() = default;
    explicit Singleton_Widget(T&&) = delete;
    Singleton_Widget(const T&) = delete;
    void operator=(const T&) = delete;
protected:
    static T* instance_value;
};
template <typename T>
T* Singleton_Widget<T>::instance_value = nullptr;
} // namespace renderive