QT 中文 和 QTableWidget::setItem 每次new是否内存泄漏

 

 

 1.Code

void SolveChineseImproper::setAndPrintTestCharacter()
{
    //如果源文件是UTF-8+BOM的编码方式，还需要在头文件加入
#if 0
#if defined(_MSC_VER) && (_MSC_VER >= 1600)    
# pragma execution_character_set("utf-8")    
#endif
#endif

    qDebug() << QString("Version:0x%1").arg(QT_VERSION, 0, 16);

    //设置中文编码
#if (QT_VERSION >= QT_VERSION_CHECK(5,0,0))
#if _MSC_VER
    QTextCodec* codec = QTextCodec::codecForName("gbk");
#else
    QTextCodec* codec = QTextCodec::codecForName("utf-8");
#endif
    QTextCodec::setCodecForLocale(codec);
    //QTextCodec::setCodecForCStrings(codec);
    //QTextCodec::setCodecForTr(codec);
#else
    QTextCodec* codec = QTextCodec::codecForName("utf-8");
    QTextCodec::setCodecForLocale(codec);
#endif

    QString str(QObject::tr("1中文"));
    qDebug() << str;
    qDebug() << QStringLiteral("2中文");
    qDebug() << QString::fromLatin1("3中文");
    qDebug() << QString::fromLocal8Bit("4中文");
    qDebug() << QString::fromUtf8("5中文");
    qDebug() << QString::fromWCharArray(L"6中文");

}

#include "QT_GetProcessMemoryInfo.h"

#pragma comment(lib, "Psapi.lib")

int col = 5;
int row = 3;
int count = 1000;
QT_GetProcessMemoryInfo::QT_GetProcessMemoryInfo(QWidget *parent)
    : QMainWindow(parent)
{
    ui.setupUi(this);  

    tableWidget = new QTableWidget(0);
    tableWidget->setRowCount(row);
    tableWidget->setColumnCount(col);
 
    tableWidget->show();

    QTimer* timer = new QTimer(this);
    connect(timer, &QTimer::timeout, this, &QT_GetProcessMemoryInfo::update);
    timer->start(1000);

    HANDLE handle = GetCurrentProcess();
    PROCESS_MEMORY_COUNTERS pmc;
    GetProcessMemoryInfo(handle, &pmc, sizeof(pmc));
    initUse = pmc.WorkingSetSize;
}

void QT_GetProcessMemoryInfo::update()
{
  
        count += 10001;
        // auto p = new char[count];
        
        for (int i = 0; i < row; i++)
        {
            for (int j = 0; j < col; j++)
            {
                QTableWidgetItem* cubesHeaderItem = new QTableWidgetItem(QString("%1").arg(count));
                (count % 2) ?
                    [=]() { cubesHeaderItem->setIcon(QIcon(QPixmap("./Images/1.png"))); }()
                    :
                    [=]() { cubesHeaderItem->setIcon(QIcon(QPixmap("./Images/2.png"))); }();
               
                cubesHeaderItem->setTextAlignment(Qt::AlignVCenter);
                tableWidget->setItem(i, j, cubesHeaderItem);
            }
        }
        
        HANDLE handle = GetCurrentProcess();
        PROCESS_MEMORY_COUNTERS pmc;
        GetProcessMemoryInfo(handle, &pmc, sizeof(pmc));
        qDebug() << CH("INIT:")
                 << initUse<<CH("  内存使用量:") 
                 << pmc.WorkingSetSize <<"new:"
                 << (pmc.WorkingSetSize - initUse);
        initUse = pmc.WorkingSetSize;
}

#pragma once

#include <QtWidgets/QMainWindow>
#include "ui_QT_GetProcessMemoryInfo.h"

#include <QDebug>
#include <windows.h>
#include <Psapi.h>
#include <QTimer> 
#include <QTableWidget>
#include <QTableWidgetItem>


#define CH(T) QStringLiteral(T)

class QT_GetProcessMemoryInfo : public QMainWindow
{
    Q_OBJECT

public:
   QT_GetProcessMemoryInfo(QWidget *parent = Q_NULLPTR);
 
 public slots:
   void update();

private:
    Ui::QT_GetProcessMemoryInfoClass ui;
    QTableWidget* tableWidget;
    SIZE_T initUse;
};

 

2. 结论会释放 ；//INIT:" 37961728 "  内存使用量:" 37961728 new: 0