30 lines
864 B
C++
30 lines
864 B
C++
#ifndef Toolbox_SingletonWidget_H
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#define Toolbox_SingletonWidget_H
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#include <QDebug>
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namespace Toolbox {
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template<typename T>
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class SingletonWidget {
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public:
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static T *instance() {
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if (!mInstance) {
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qInfo() << "error SingletonWidget 未创建" << mInstance;
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}
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return mInstance;
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}
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SingletonWidget() {
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if (mInstance) {
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qInfo() << "error SingletonWidget 重复创建" << mInstance;
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}
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mInstance = static_cast<T *>(this);
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}
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virtual ~SingletonWidget() {}
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SingletonWidget(T &&) = delete;
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SingletonWidget(const T &) = delete;
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void operator=(const T &) = delete;
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protected:
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static T *mInstance;
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};
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template<typename T> T *SingletonWidget<T>::mInstance = nullptr;
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}
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#endif
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