c++学习笔记- 自制魔兽显血改键_mfc 改键魔兽-优快云博客

本文介绍了一种在《魔兽III》游戏中实现显示血量和修改键盘按键功能的方法。通过模拟键盘输入和使用WH_KEYBOARD_LL钩子技术，可以在游戏运行时改变特定按键的行为。

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显血：

模拟键盘按键'['和']'来达到显血效果。

void CMsxxDlg::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	if(nIDEvent==1)
	{
		hWnd=::GetForegroundWindow();//获取当前窗口句柄
		::GetWindowText(hWnd,wText,50);
		if(strcmp(wText,"Warcraft III")==0)//如果是魔兽窗口则模拟按键
		{
			if(flag==0)
			{
            	             keybd_event(219,0,0,0); 
	         	             keybd_event(221,0,0,0);
			    flag=1;
			}
		}
		else
		{
			flag=0;
		}

	}
	CDialog::OnTimer(nIDEvent);
}

改键：

用到WH_KEYBOARD_LL钩子，先创建一个MFC规则的dll将功能函数都放到里面。

先在头文件中添加变量和函数

int v1,v2,v4,v5,v7,v8;//修改关联小键盘的虚拟键码

HHOOK g_hHook;
HINSTANCE g_hInstanceHandle=NULL;
extern "C" _declspec(dllexport) BOOL StartHook(int t1,int t2,int t4,int t5,int t7,int t8);//初始化钩子
extern "C" _declspec(dllexport) BOOL StopHook();//停止钩子

在cpp中实现函数功能

1.钩子回调函数

LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
{
	//先获取当前窗口看是否为魔兽窗口
	char str[30];
	::GetWindowText(::GetForegroundWindow(),str,30);
	if(strcmp(str,"Warcraft III")==0)
	{
		if(nCode==HC_ACTION)
		{
			LPKBDLLHOOKSTRUCT lpk=(LPKBDLLHOOKSTRUCT)lParam;
			//1
			if(lpk->vkCode==v1)
			{
				if(wParam==WM_KEYDOWN)
				{
					keybd_event(97,0,0,0);
				}
				else
				if(wParam==WM_KEYUP)
				{
					keybd_event(97,0,KEYEVENTF_KEYUP,0);
				}
				return 1;
			}
			//2
			if(lpk->vkCode==v2)
			{
				if(wParam==WM_KEYDOWN)
				{
					keybd_event(98,0,0,0);
				}
				else
				if(wParam==WM_KEYUP)
				{
					keybd_event(98,0,KEYEVENTF_KEYUP,0);
				}
				return 1;
			}
			//4
			if(lpk->vkCode==v4)
			{
				if(wParam==WM_KEYDOWN)
				{
					keybd_event(100,0,0,0);
				}
				else
				if(wParam==WM_KEYUP)
				{
					keybd_event(100,0,KEYEVENTF_KEYUP,0);
				}
				return 1;
			}
			//5
			if(lpk->vkCode==v5)
			{
				if(wParam==WM_KEYDOWN)
				{
					keybd_event(101,0,0,0);
				}
				else
				if(wParam==WM_KEYUP)
				{
					keybd_event(101,0,KEYEVENTF_KEYUP,0);
				}
				return 1;
			}
			//7
			if(lpk->vkCode==v7)
			{
				if(wParam==WM_KEYDOWN)
				{
					keybd_event(103,0,0,0);
				}
				else
				if(wParam==WM_KEYUP)
				{
					keybd_event(103,0,KEYEVENTF_KEYUP,0);
				}
				return 1;
			}
			//8
			if(lpk->vkCode==v8)
			{
				if(wParam==WM_KEYDOWN)
				{
					keybd_event(104,0,0,0);
				}
				else
				if(wParam==WM_KEYUP)
				{
					keybd_event(104,0,KEYEVENTF_KEYUP,0);
				}
				return 1;
			}


		}
	}
	LRESULT lRetVal=CallNextHookEx(g_hHook,nCode,wParam,0);
	return lRetVal;
	
}

2.初始化钩子

extern "C" _declspec(dllexport) BOOL StartHook(int t1,int t2,int t4,int t5,int t7,int t8)
{
	v1=t1;
	v2=t2;

	v4=t4;
	v5=t5;

	v7=t7;
	v8=t8;
	g_hHook=SetWindowsHookEx(WH_KEYBOARD_LL,(HOOKPROC)KeyboardProc,g_hInstanceHandle,0);
	return TRUE;
}

3.卸载钩子

extern "C" _declspec(dllexport) BOOL StopHook()
{
	if(g_hHook)
	{
		return UnhookWindowsHookEx(g_hHook);
	}
	return TRUE;
}

最后在主程序中调用dll时将修改6个小键盘的虚拟键码传递进来就行了。