设置QPushButton的平面与突出（遍历控件）

#include "ui_maindialog.h"

#include "maindialog.h"

#include <QState>

#include <QEventTransition>

#include <QStateMachine>

#include <qDebug>

MainDialog::MainDialog(QWidget *parent) :

    QDialog(parent),

    ui(new Ui::MainDialog)

{

    ui->setupUi(this);

    setWindowFlags(Qt::WindowStaysOnTopHint);

    /*遍历界面上所有button*/

    QList<QPushButton *> button = this->findChildren<QPushButton *>();

    qDebug() << button.count();

    for(int i=0; i < button.count(); i++)//通过i的范围确定需要设置哪些button

    {

        setDynamicImage(button.at(i));

    }

}

void MainDialog::setDynamicImage(QPushButton *button)

{

    /*定义两种状态（鼠标进入button/退出button）*/

    QState *inside = new QState;

    inside->assignProperty(button,"flat", "false");//设置button为凸起

    QState *outside = new QState;

    outside->assignProperty(button, "flat", "true");//设置button为平面

    /*把进入、退出事件与button关联*/

    QEventTransition *enterTransition = new QEventTransition(button, QEvent::Enter);

    enterTransition->setTargetState(inside);//鼠标进入button

    outside->addTransition(enterTransition);//把outside状态，连接到enterTransition变化中去

    QEventTransition *leaveTransition = new QEventTransition(button, QEvent::Leave);

    leaveTransition->setTargetState(outside);//鼠标退出button

    inside->addTransition(leaveTransition);//把inside状态，连接到leaveTransition变化中去

    /*定义状态机*/

    QStateMachine *machine = new QStateMachine(this);

    /*在状态机中添加这两种状态*/

    machine->addState(inside);

    machine->addState(outside);

    /*设置初始状态*/

    machine->setInitialState(outside);

    /*启动状态机*/

    machine->start();

}

MainDialog::~MainDialog()

{

    delete ui;

}

http://blog.csdn.net/mingxia_sui/article/details/7760163