只需要一点点C++基础，新手也可以制作单机游戏内存修改器

#ifndef GAMEEDITOR_H
#define GAMEEDITOR_H

#include <QtWidgets/QWidget>
#include "ui_gameeditor.h"
//读写游戏内存所必须的头文件
#include <windows.h>

class QTimer;
class GameEditor : public QWidget
{
	Q_OBJECT

public:
	GameEditor(QWidget *parent = 0);
	~GameEditor();

//slots就是表示槽函数
protected slots:
	void connectGame();
	void updateGameMoney();
	void updateGamePerks();

private:
	Ui::GameEditorClass ui;
	//计时器指针，见5-2-4
	QTimer* timer;
	//金钱地址
	DWORD moueyAdress;
	//技能点地址
	DWORD perksAdress;
	//进程PID
	DWORD pid;
	HWND hwnd;
	//进程句柄
	HANDLE handle;
};

#endif // GAMEEDITOR_H

#include "gameeditor.h"
//定时器头文件
#include <QTimer>
//提示框头文件
#include <QMessageBox>

GameEditor::GameEditor(QWidget *parent)
: QWidget(parent)
{
	ui.setupUi(this);
	pid = 0;
	hwnd = 0;
	handle = 0;
	//金钱一级基址
	moueyAdress = 0x009D5E2C;
	//技能点一级基址
	perksAdress = 0x009D5E2C;
	//创建一个定时器,见5-2-4
	timer = new QTimer;
	//设置时间间隔为1000毫秒
	timer->setInterval(1000);
	//timeout为计时器内置信号，时间一到自动发送
	//connect为关联信号槽，详细见前面的知识普及内容
	//connect(信号发送者指针,SIGNAL(信号), this, SLOT(槽实现函数));
	connect(timer, SIGNAL(timeout()), this, SLOT(connectGame()));
	//clicked为按钮内置信号，点击自动发送
	//还记得吗，ui.pushButton是金钱修改按钮，ui.pushButton_2是技能点修改按钮
	connect(ui.pushButton, SIGNAL(clicked()), this, SLOT(updateGameMoney()));
	connect(ui.pushButton_2, SIGNAL(clicked()), this, SLOT(updateGamePerks()));
	ui.label_4->setText(QString::fromLocal8Bit("正在等待游戏程序...."));
	//计时器开始计时
	timer->start();
}

GameEditor::~GameEditor()
{

}

void GameEditor::connectGame()
{
	//查找窗口并返回窗口句柄
	hwnd = FindWindow(0, L"Mount&Blade Warband");

	if (!hwnd)
	{
		return;
	}

	//通过窗口句柄获取pid
	GetWindowThreadProcessId(hwnd, &pid);

	if (!pid)
	{
		return;
	}

	//通过pid打开一个进程并获取进程句柄
	handle = OpenProcess(PROCESS_ALL_ACCESS, false, pid);

	if (!handle)
	{
		return;
	}

	//通过金钱一级基址读取里面的数据
	DWORD newMoneyAdress = 0;
	ReadProcessMemory(handle, (LPVOID)moueyAdress, &newMoneyAdress, sizeof(newMoneyAdress), 0);
	//读取不到说明你开了游戏，但是没有开始
	if (moueyAdress <= 0)
	{
		return;
	}
	ui.label_4->setText(QString::fromLocal8Bit("游戏程序连接成功!"));
	//停止计时器
	timer->stop();

	//金钱一级基址里的值+第二个偏移量=金钱二级基址
	moueyAdress = newMoneyAdress;
	moueyAdress += 0x140EC;
	//通过金钱二级基址读取里面的数据
	ReadProcessMemory(handle, (LPVOID)moueyAdress, &newMoneyAdress, sizeof(newMoneyAdress), 0);

	//金钱二级基址里的值+第一个偏移量=游戏数据地址（动态）,游戏数据地址里的值就是游戏数据
	moueyAdress = newMoneyAdress;
	moueyAdress += 0x5D0;

	//同理通过技能点一级基址和偏移量获取游戏数据地址
	DWORD newPerksAdress = 0;
	ReadProcessMemory(handle, (LPVOID)perksAdress, &newPerksAdress, sizeof(newPerksAdress), 0);
	perksAdress = newPerksAdress;
	perksAdress += 0x140EC;
	ReadProcessMemory(handle, (LPVOID)perksAdress, &newPerksAdress, sizeof(newPerksAdress), 0);
	perksAdress = newPerksAdress;
	perksAdress += 0x2BC;
}

//金钱的修改按钮被点击
void GameEditor::updateGameMoney()
{
	//还记得吗，ui.lineEdit就是金钱的文本输入框，text()表示获取输入框的文本，toInt()表示转化为int数据
	DWORD money = ui.lineEdit->text().toInt();
	//修改游戏数据地址里的值
	DWORD pref=WriteProcessMemory(handle, (LPVOID)moueyAdress, &money, sizeof(money), 0);
	//QString是Qt里的字符串
	QString informationStr;
	if (pref)
	{
		informationStr = QString::fromLocal8Bit("修改成功");
	}
	else
	{
		informationStr = QString::fromLocal8Bit("修改失败");
	}
	//信息提示框，第一个参数是父窗口，填写this或者0都可以，第二个参数是标题，第三个参数是提示内容
	QMessageBox::information(this, QString::fromLocal8Bit("提示"), informationStr);
}

//技能点的修改按钮被点击
void GameEditor::updateGamePerks()
{
	DWORD perks = ui.lineEdit_2->text().toInt();
	DWORD pref = WriteProcessMemory(handle, (LPVOID)perksAdress, &perks, sizeof(perks), 0);

	QString informationStr;
	if (pref)
	{
		informationStr = QString::fromLocal8Bit("修改成功");
	}
	else
	{
		informationStr = QString::fromLocal8Bit("修改失败");
	}
	//信息提示框，第一个参数是父窗口，填写this或者0都可以，第二个参数是标题，第三个参数是提示内容
	QMessageBox::information(this, QString::fromLocal8Bit("提示"), informationStr);
}