PushButton的简单封装，主要是背景图像自适应button大小和文字显示
这个简单的封装有BUG，就是内存释放不掉的BUG 大家帮我看看问题出现在那，当然还有其他问题也可以帮忙指出
.h

C/C++ code

#pragma once#include <QPushButton>#include <QImage>#include <QPixmap>#include <QSize>#include <QIcon>#include <QPaintEvent>#include <QPainter>#include <QColor>class IButton :    public QPushButton{    Q_OBJECTpublic:    IButton(QWidget * parent = 0);    ~IButton(void);    void setBlack(QString & name);    void wordshow(QString &show_word);    void set_font_size();public:    QString word_;protected:    QImage *image_;    QIcon *icon_;    QPixmap *pixmap_;protected:    void paintEvent( QPaintEvent * event );};

C/C++ code

#include "IButton.h"IButton::IButton(QWidget * parent)    :QPushButton(parent){    int h;    QPalette palette_;// = palette();    palette_ = palette();        QFont font_ = font();        image_ = new QImage();    pixmap_ = new QPixmap();    icon_ = new QIcon();    word_.clear();    h = size().width()>size().height()?size().height():size().width();    font_.setPointSize(h-h/3);    setFont(font_);    palette_.setColor(QPalette::Active,QPalette::ButtonText,QColor(255,255,255));    setPalette(palette_);    setFocusPolicy(Qt::NoFocus);    }IButton::~IButton(void){    delete []image_;    delete []pixmap_;    delete icon_;}void IButton::setBlack(QString & name){    image_->load(name);    QSize s = size();//the button you would to set the back;    QImage i2 = image_->scaled(s);//adapt the size of button;    *pixmap_ = QPixmap::fromImage(i2);//this is the static function    setIcon(QIcon(*pixmap_));    setIconSize(s);}void IButton::paintEvent(QPaintEvent * event){    QPushButton::paintEvent(event) ;    QPainter painter(this) ;     if (!word_.isEmpty())    {        painter.drawText(rect(),Qt::AlignCenter,word_);    }                event->accept();    return ;}void IButton::wordshow(QString &show_word){    word_ = show_word;}void IButton::set_font_size(){}

现在问题如下：
如果我用这个类作为button装载图片，来响应按键被按下和放开，那么按下一个背景，放开一个背景。其他没问题但我不断的按下放开内存在不断的增长，即使我在主窗口中delete 这个button 内存还是回不去。问题出现在那边？

[解决办法]
试试setAttribute(Qt::WA_DeleteOnClose, true);
我以前也遇到过内存不能释放的问题，不管delete还是写析构函数都不管用，后来用这个函数问题解决了，楼主试试吧