[C++知识库]野路子玩Qt，第二十二集，打造自己的游戏库

昨天讲了Qt如何检测游戏手柄，今天我们就模仿“小鸡模拟器”，打造自己的游戏库，

首先安装“小鸡模拟器”，下载自己喜欢的FC游戏，

1.俄罗斯方块
2.魂斗罗
3.坦克大战

保证游戏运行后，我们开始编写自己的代码：

#include <QPixmap>
#include <QDebug>
//#include <TlHelp32.h>
//#include <windef.h>
#include <QGamepad>
#include <QProcess>
#include <QGamepadManager>
//class QGamepad;

#pragma comment(lib,"user32.lib")
/
界面ui：

listWidget，添加
1.俄罗斯方块
2.魂斗罗
3.坦克大战
设置属性：currentRow 为0

添加，label_2 
/
添加资源文件：
/new/prefix1/res/1.png
/new/prefix1/res/2.jpeg
/new/prefix1/res/3.jpeg
/
h文件
public:
	QProcess *process;//定义进程指针

private slots:
	void stateChanged(QProcess::ProcessState state);//检测进程状态


cpp文件

process = new QProcess();//创建进程
//进程状态监控
connect(process,SIGNAL(stateChanged(QProcess::ProcessState)),SLOT(stateChanged(QProcess::ProcessState)));

//连接设备
QGamepad *m_gamepad = new QGamepad(0, this);
connect(m_gamepad, &QGamepad::buttonStartChanged, this, [=](bool pressed){
   qDebug() << "Button Start" << pressed;
                if(pressed==true)
                {
                    if(ui->listWidget->currentRow()==0)
                        process->start(tr("D:\\Program Files (x86)\\xiaoji\\Emulator\\FC\\fceux\\fceux.exe"),QStringList("H:\\Games\\FC\\7100638\\7100638.zip"));
                      //process->startDetached(tr("D:\\Program Files (x86)\\xiaoji\\Emulator\\FC\\fceux\\fceux1.exe"),QStringList("H:\\Games\\FC\\7100060\\7100060.zip"));
	if(ui->listWidget->currentRow()==1)
                        process->start(tr("D:\\Program Files (x86)\\xiaoji\\Emulator\\FC\\fceux\\fceux.exe"),QStringList("H:\\Games\\FC\\7100060\\7100060.zip"));
	if(ui->listWidget->currentRow()==2)
                        process->start(tr("D:\\Program Files (x86)\\xiaoji\\Emulator\\FC\\fceux\\fceux.exe"),QStringList("H:\\Games\\FC\\7000203\\7000203.zip"));
                }
            })；
connect(m_gamepad, &QGamepad::buttonUpChanged, this, [=](bool pressed){
                qDebug() << "buttonUp" << pressed;
                qDebug() << ui->listWidget->currentRow();
                if(pressed==true)
                ui->listWidget->setCurrentRow(ui->listWidget->currentRow()-1);
            });
            connect(m_gamepad, &QGamepad::buttonDownChanged, this, [=](bool pressed){
                qDebug() << "buttonDown" << pressed;
                qDebug() << ui->listWidget->currentRow();
                if(pressed==true)
                ui->listWidget->setCurrentRow(ui->listWidget->currentRow()+1);

            });



void MainWindow::on_listWidget_currentRowChanged(int currentRow)
{
        QPixmap img;
        if(currentRow==0)
            img.load(":/new/prefix1/res/1.png");
        if(currentRow==1)
            img.load(":/new/prefix1/res/2.jpeg");
        if(currentRow==2)
            img.load(":/new/prefix1/res/3.jpeg");
        ui->label_2->clear();
        ui->label_2->setPixmap(img);
}

void MainWindow::stateChanged(QProcess::ProcessState state)
{
    qDebug()<<"show state:";
        switch(state)
        {
         case QProcess::NotRunning:
            qDebug()<<"Not Running";
            break;
        case QProcess::Starting:
            qDebug()<<"Starting";
            break;
        case QProcess::Running:
            qDebug()<<"Running";
            break;
        default:
            qDebug()<<"otherState";
            break;
        }
}