設置QPushButton的平面與突出（遍歷控件）

#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);

    /*遍歷界面上所有button*/

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

    qDebug() << button.count();

    for(int i=0; i < button.count(); i++)//通過i的範圍確定需要設置哪些button

    {

        setDynamicImage(button.at(i));

    }

}

void MainDialog::setDynamicImage(QPushButton *button)

{

    /*定義兩種狀態（鼠標進入button/退出button）*/

    QState *inside = new QState;

    inside->assignProperty(button,"flat", "false");//設置button爲凸起

    QState *outside = new QState;

    outside->assignProperty(button, "flat", "true");//設置button爲平面

    /*把進入、退出事件與button關聯*/

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

    enterTransition->setTargetState(inside);//鼠標進入button

    outside->addTransition(enterTransition);//把outside狀態，連接到enterTransition變化中去

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

    leaveTransition->setTargetState(outside);//鼠標退出button

    inside->addTransition(leaveTransition);//把inside狀態，連接到leaveTransition變化中去

    /*定義狀態機*/

    QStateMachine *machine = new QStateMachine(this);

    /*在狀態機中添加這兩種狀態*/

    machine->addState(inside);

    machine->addState(outside);

    /*設置初始狀態*/

    machine->setInitialState(outside);

    /*啓動狀態機*/

    machine->start();

}

MainDialog::~MainDialog()

{

    delete ui;

}