SetWindowsHookEx在当前进程设置键盘钩子

#ifndef MFCTEST_HEAD
#define MFCTEST_HEAD
#pragma once

#include <afxwin.h>
#include <afxframewndex.h>

#define IDC_START   1012            //按钮定义
HHOOK g_KeyBoard=NULL;
LRESULT CALLBACK KeyboardProc(int code,WPARAM wParam,LPARAM lParam);	//键盘钩子函数定义

class CMyApp:public CWinApp
{
public:
	//构造函数
	CMyApp();
	//析构函数
	virtual ~CMyApp();

	//重载函数
public:
	//初始函数
	virtual BOOL InitInstance();
};

class CMyWindow : public CFrameWndEx
{
public:
	//构造函数
	CMyWindow();
	//析构函数
	virtual ~CMyWindow();

	//虚函数
public:
	//命令响应消息
	virtual BOOL OnCommand(WPARAM wParam, LPARAM lParam);

	//消息映射
public:
	afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
	DECLARE_MESSAGE_MAP()

public:
	CButton       m_button;       //按钮

};

#endif

#include "1.h"

CMyApp myapp;

//构造函数
CMyApp::CMyApp()
{

}

//析构函数
CMyApp::~CMyApp()
{

}

//初始函数
BOOL CMyApp::InitInstance()
{
	m_pMainWnd = new CMyWindow();
	m_pMainWnd->ShowWindow(SW_SHOW);
	m_pMainWnd->UpdateWindow();
	return TRUE;
}

//{{AFX_MSG_MAP(CFrameWndEx)
BEGIN_MESSAGE_MAP(CMyWindow, CFrameWndEx)
	ON_WM_CREATE()
END_MESSAGE_MAP()

//构造函数
CMyWindow::CMyWindow()
{
	Create(NULL, TEXT("My Window"));
	RECT rect={0,0,50,30};
	m_button.Create(TEXT("按钮"),WS_CHILD|WS_VISIBLE,rect,this,IDC_START);
}
//析构函数
CMyWindow::~CMyWindow()
{
	if (g_KeyBoard)
	{
		UnhookWindowsHookEx(g_KeyBoard);
		g_KeyBoard=NULL;
	}
}

//命令响应消息
BOOL CMyWindow::OnCommand( WPARAM wParam, LPARAM lParam )
{
	int wmId=LOWORD(wParam);
	switch (wmId)
	{
	case IDC_START:
		{
			MessageBox(TEXT("测试一下哈"),TEXT("提示"),MB_OK);
			return true;
		}
		break;
	default:
		return true;
	}

	return __super::OnCommand(wParam,lParam);

}

//创建事件
int CMyWindow::OnCreate( LPCREATESTRUCT lpCreateStruct )
{
	__super::OnCreate(lpCreateStruct);
	g_KeyBoard=SetWindowsHookEx(WH_KEYBOARD,KeyboardProc,NULL,GetCurrentThreadId());
	if (g_KeyBoard==NULL)
	{
		ASSERT(FALSE);
		AfxMessageBox(TEXT("设置钩子失败"));
	}
	return true;
}

//键盘钩子
LRESULT CALLBACK KeyboardProc( int code,WPARAM wParam,LPARAM lParam )
{
	if (VK_F2==wParam && (lParam>>31&1)==1)
	{
		AfxMessageBox(TEXT("我是你的大皇冠"));
		return true;
	}
	else
		return CallNextHookEx(g_KeyBoard,code,wParam,lParam);

	ASSERT(FALSE);
	return false;
}