这是从 qt ui 文件生成的代码，我看到代码使用 new 关键字分配内存但没有 delete类中用于删除已分配资源的关键字，这是 qt 开发人员的错误还是其他原因(没有释放资源)？
/********************************************************************************
** Form generated from reading UI file 'canyyeffectcontrol.ui'
**
** Created by: Qt User Interface Compiler version 5.0.2
**
** WARNING! All changes made in this file will be lost when recompiling UI file!
********************************************************************************/
#ifndef UI_CANYYEFFECTCONTROL_H
#define UI_CANYYEFFECTCONTROL_H
#include <QtCore/QVariant>
#include <QtWidgets/QAction>
#include <QtWidgets/QApplication>
#include <QtWidgets/QButtonGroup>
#include <QtWidgets/QCheckBox>
#include <QtWidgets/QGridLayout>
#include <QtWidgets/QHeaderView>
#include <QtWidgets/QLabel>
#include <QtWidgets/QSlider>
#include <QtWidgets/QSpinBox>
#include <QtWidgets/QWidget>
QT_BEGIN_NAMESPACE
class Ui_canyyeffectcontrol
{
public:
QGridLayout *gridLayout;
QSlider *Threshold2Slider;
QLabel *Threshold1Label;
QLabel *ApertureSizeLabel;
QLabel *Threshold2Label;
QSpinBox *Threshold1Spin;
QSpinBox *Threshold2Spin;
QSpinBox *ApertureSizeSpin;
QSlider *ApertureSizeSlider;
QSlider *Threshold1Slider;
QCheckBox *EL2GLabel;
void setupUi(QWidget *canyyeffectcontrol)
{
if (canyyeffectcontrol->objectName().isEmpty())
canyyeffectcontrol->setObjectName(QStringLiteral("canyyeffectcontrol"));
canyyeffectcontrol->resize(432, 210);
canyyeffectcontrol->setMinimumSize(QSize(153, 119));
canyyeffectcontrol->setMaximumSize(QSize(432, 210));
gridLayout = new QGridLayout(canyyeffectcontrol);
gridLayout->setObjectName(QStringLiteral("gridLayout"));
Threshold2Slider = new QSlider(canyyeffectcontrol);
Threshold2Slider->setObjectName(QStringLiteral("Threshold2Slider"));
Threshold2Slider->setOrientation(Qt::Horizontal);
gridLayout->addWidget(Threshold2Slider, 4, 1, 1, 2);
Threshold1Label = new QLabel(canyyeffectcontrol);
Threshold1Label->setObjectName(QStringLiteral("Threshold1Label"));
gridLayout->addWidget(Threshold1Label, 2, 0, 1, 1);
ApertureSizeLabel = new QLabel(canyyeffectcontrol);
ApertureSizeLabel->setObjectName(QStringLiteral("ApertureSizeLabel"));
gridLayout->addWidget(ApertureSizeLabel, 5, 0, 1, 1);
Threshold2Label = new QLabel(canyyeffectcontrol);
Threshold2Label->setObjectName(QStringLiteral("Threshold2Label"));
gridLayout->addWidget(Threshold2Label, 4, 0, 1, 1);
Threshold1Spin = new QSpinBox(canyyeffectcontrol);
Threshold1Spin->setObjectName(QStringLiteral("Threshold1Spin"));
gridLayout->addWidget(Threshold1Spin, 2, 3, 1, 1);
Threshold2Spin = new QSpinBox(canyyeffectcontrol);
Threshold2Spin->setObjectName(QStringLiteral("Threshold2Spin"));
gridLayout->addWidget(Threshold2Spin, 4, 3, 1, 1);
ApertureSizeSpin = new QSpinBox(canyyeffectcontrol);
ApertureSizeSpin->setObjectName(QStringLiteral("ApertureSizeSpin"));
gridLayout->addWidget(ApertureSizeSpin, 5, 3, 1, 1);
ApertureSizeSlider = new QSlider(canyyeffectcontrol);
ApertureSizeSlider->setObjectName(QStringLiteral("ApertureSizeSlider"));
ApertureSizeSlider->setOrientation(Qt::Horizontal);
gridLayout->addWidget(ApertureSizeSlider, 5, 1, 1, 2);
Threshold1Slider = new QSlider(canyyeffectcontrol);
Threshold1Slider->setObjectName(QStringLiteral("Threshold1Slider"));
Threshold1Slider->setOrientation(Qt::Horizontal);
gridLayout->addWidget(Threshold1Slider, 2, 1, 1, 1);
EL2GLabel = new QCheckBox(canyyeffectcontrol);
EL2GLabel->setObjectName(QStringLiteral("EL2GLabel"));
gridLayout->addWidget(EL2GLabel, 0, 0, 1, 1);
retranslateUi(canyyeffectcontrol);
QMetaObject::connectSlotsByName(canyyeffectcontrol);
} // setupUi
void retranslateUi(QWidget *canyyeffectcontrol)
{
canyyeffectcontrol->setWindowTitle(QApplication::translate("canyyeffectcontrol", "Canny effect control", 0));
Threshold1Label->setText(QApplication::translate("canyyeffectcontrol", "Threshold size 1", 0));
ApertureSizeLabel->setText(QApplication::translate("canyyeffectcontrol", "Aperture size", 0));
Threshold2Label->setText(QApplication::translate("canyyeffectcontrol", "Threshold size 2", 0));
EL2GLabel->setText(QApplication::translate("canyyeffectcontrol", "Enable L2G", 0));
} // retranslateUi
};
namespace Ui {
class canyyeffectcontrol: public Ui_canyyeffectcontrol {};
} // namespace Ui
QT_END_NAMESPACE
#endif // UI_CANYYEFFECTCONTROL_H
这是否意味着我应该重写代码以释放内存(例如unique_ptr)并且代码应该是这样的
/********************************************************************************
** Form generated from reading UI file 'canyyeffectcontrol.ui'
**
** Created by: Qt User Interface Compiler version 5.0.2
**
** WARNING! All changes made in this file will be lost when recompiling UI file!
** I modify the code
********************************************************************************/
#ifndef UI_CANYYEFFECTCONTROL_H
#define UI_CANYYEFFECTCONTROL_H
#include <QtCore/QVariant>
#include <QtWidgets/QAction>
#include <QtWidgets/QApplication>
#include <QtWidgets/QButtonGroup>
#include <QtWidgets/QCheckBox>
#include <QtWidgets/QGridLayout>
#include <QtWidgets/QHeaderView>
#include <QtWidgets/QLabel>
#include <QtWidgets/QSlider>
#include <QtWidgets/QSpinBox>
#include <QtWidgets/QWidget>
QT_BEGIN_NAMESPACE
class Ui_canyyeffectcontrol
{
public:
std::unique_ptr<QGridLayout> gridLayout;
std::unique_ptr<QSlider> Threshold2Slider;
std::unique_ptr<QLabel> Threshold1Label;
std::unique_ptr<QLabel> ApertureSizeLabel;
std::unique_ptr<QLabel> Threshold2Label;
std::unique_ptr<QSpinBox>Threshold1Spin;
std::unique_ptr<QSpinBox> Threshold2Spin;
std::unique_ptr<QSpinBox> ApertureSizeSpin;
std::unique_ptr<QSlider> ApertureSizeSlider;
std::unique_ptr<QSlider> Threshold1Slider;
std::unique_ptr<QCheckBox> EL2GLabel;
void setupUi(QWidget *canyyeffectcontrol)
{
if (canyyeffectcontrol->objectName().isEmpty())
canyyeffectcontrol->setObjectName(QStringLiteral("canyyeffectcontrol"));
canyyeffectcontrol->resize(432, 210);
canyyeffectcontrol->setMinimumSize(QSize(153, 119));
canyyeffectcontrol->setMaximumSize(QSize(432, 210));
gridLayout = std::unique_ptr<QGridLayout> (new QGridLayout(canyyeffectcontrol));
gridLayout->setObjectName(QStringLiteral("gridLayout"));
Threshold2Slider = std::unique_ptr<QSlider>(new QSlider(canyyeffectcontrol));
Threshold2Slider.get()->setObjectName(QStringLiteral("Threshold2Slider"));
Threshold2Slider.get()->setOrientation(Qt::Horizontal);
gridLayout.get()->addWidget(Threshold2Slider.get(), 4, 1, 1, 2);
Threshold1Label = std::unique_ptr<QLabel> (new QLabel(canyyeffectcontrol));
Threshold1Label.get()->setObjectName(QStringLiteral("Threshold1Label"));
gridLayout.get()->addWidget(Threshold1Label.get(), 2, 0, 1, 1);
ApertureSizeLabel = std::unique_ptr<QLabel> (new QLabel(canyyeffectcontrol));
ApertureSizeLabel.get()->setObjectName(QStringLiteral("ApertureSizeLabel"));
gridLayout.get()->addWidget(ApertureSizeLabel.get(), 5, 0, 1, 1);
Threshold2Label = std::unique_ptr<QLabel> (new QLabel(canyyeffectcontrol));
Threshold2Label.get()->setObjectName(QStringLiteral("Threshold2Label"));
gridLayout.get()->addWidget(Threshold2Label.get(), 4, 0, 1, 1);
Threshold1Spin = std::unique_ptr<QSpinBox> (new QSpinBox(canyyeffectcontrol));
Threshold1Spin.get()->setObjectName(QStringLiteral("Threshold1Spin"));
gridLayout.get()->addWidget(Threshold1Spin.get(), 2, 3, 1, 1);
Threshold2Spin = std::unique_ptr<QSpinBox> (new QSpinBox(canyyeffectcontrol));
Threshold2Spin.get()->setObjectName(QStringLiteral("Threshold2Spin"));
gridLayout->addWidget(Threshold2Spin.get(), 4, 3, 1, 1);
ApertureSizeSpin = std::unique_ptr<QSpinBox> (new QSpinBox(canyyeffectcontrol));
ApertureSizeSpin.get()->setObjectName(QStringLiteral("ApertureSizeSpin"));
gridLayout.get()->addWidget(ApertureSizeSpin.get(), 5, 3, 1, 1);
ApertureSizeSlider =std::unique_ptr<QSlider> (new QSlider(canyyeffectcontrol));
ApertureSizeSlider.get()->setObjectName(QStringLiteral("ApertureSizeSlider"));
ApertureSizeSlider.get()->setOrientation(Qt::Horizontal);
gridLayout->addWidget(ApertureSizeSlider.get(), 5, 1, 1, 2);
Threshold1Slider =std::unique_ptr<QSlider> (new QSlider(canyyeffectcontrol));
Threshold1Slider.get()->setObjectName(QStringLiteral("Threshold1Slider"));
Threshold1Slider.get()->setOrientation(Qt::Horizontal);
gridLayout.get()->addWidget(Threshold1Slider.get(), 2, 1, 1, 1);
EL2GLabel = std::unique_ptr<QCheckBox> (new QCheckBox(canyyeffectcontrol));
EL2GLabel.get()->setObjectName(QStringLiteral("EL2GLabel"));
gridLayout.get()->addWidget(EL2GLabel.get(), 0, 0, 1, 1);
retranslateUi(canyyeffectcontrol);
QMetaObject::connectSlotsByName(canyyeffectcontrol);
} // setupUi
void retranslateUi(QWidget *canyyeffectcontrol)
{
canyyeffectcontrol->setWindowTitle(QApplication::translate("canyyeffectcontrol", "Canny effect control", 0));
Threshold1Label.get()->setText(QApplication::translate("canyyeffectcontrol", "Threshold size 1", 0));
ApertureSizeLabel.get()->setText(QApplication::translate("canyyeffectcontrol", "Aperture size", 0));
Threshold2Label.get()->setText(QApplication::translate("canyyeffectcontrol", "Threshold size 2", 0));
EL2GLabel.get()->setText(QApplication::translate("canyyeffectcontrol", "Enable L2G", 0));
} // retranslateUi
};
namespace Ui {
class canyyeffectcontrol: public Ui_canyyeffectcontrol {};
} // namespace Ui
QT_END_NAMESPACE
#endif // UI_CANYYEFFECTCONTROL_H
最佳答案
阅读 QObject 派生类如何管理内存 - 简而言之，如果 QObject 是用父类构造的，那么当父类被销毁时它也会被销毁.在您的示例中，看起来所有内容都是作为 canyyeffectcontrol 的子项创建的，因此这些对象将在那时被销毁。
关于c++ - Qt UI Generator 不释放资源，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/17853321/
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