编程实现单文档应用程序，满足以下要求： （1）MFC标准类型，经典菜单与不带工具栏； （2）单击鼠标左键，消息对话框中显示鼠标信息（鼠标左键+坐标）； （3）单击鼠标左键+键盘Ctrl键，消息对话框中显示鼠标信息（鼠标左键+Ctrl键+坐标）； （4）按下键盘任意字符键（至少识别三个功能键），客户区中显示按键信息（字符或功能键内容）

以下是实现代码：

MyApp.h

#pragma once

class CMyApp : public CWinApp
{
public:
    CMyApp();

public:
    virtual BOOL InitInstance();

private:
    static BOOL CALLBACK MouseProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
    static LRESULT CALLBACK KeyboardProc(int code, WPARAM wParam, LPARAM lParam);

private:
    static CWnd* m_pWnd;
};

MyApp.cpp

#include "stdafx.h"
#include "MyApp.h"
#include "MyFrameWnd.h"
#include <afxwin.h>

CWnd* CMyApp::m_pWnd = NULL;

CMyApp::CMyApp()
{
}

BOOL CMyApp::InitInstance()
{
    CWinApp::InitInstance();

    CMyFrameWnd* pFrameWnd = new CMyFrameWnd;
    pFrameWnd->Create(NULL, _T("Single Document Application"), WS_OVERLAPPEDWINDOW, CRect(0, 0, 800, 600));
    pFrameWnd->ShowWindow(SW_SHOW);
    m_pMainWnd = pFrameWnd;

    m_pWnd = pFrameWnd;
    SetWindowsHookEx(WH_KEYBOARD_LL, KeyboardProc, AfxGetInstanceHandle(), 0);

    HINSTANCE hInstance = AfxGetInstanceHandle();
    SetWindowsHookEx(WH_MOUSE_LL, MouseProc, hInstance, 0);

    return TRUE;
}

BOOL CALLBACK CMyApp::MouseProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    if (message == WM_LBUTTONDOWN)
    {
        CString strMsg;
        strMsg.Format(_T("Mouse left button clicked at (%d, %d)"), LOWORD(lParam), HIWORD(lParam));
        if (GetKeyState(VK_CONTROL) & 0x8000)
        {
            strMsg += _T(" Ctrl key pressed");
        }
        AfxMessageBox(strMsg);
    }
    return CallNextHookEx(NULL, message, wParam, lParam);
}

LRESULT CALLBACK CMyApp::KeyboardProc(int code, WPARAM wParam, LPARAM lParam)
{
    if (code == HC_ACTION)
    {
        CString strMsg;
        if ((GetKeyState(VK_CONTROL) & 0x8000) && (wParam == 'A'))
        {
            strMsg = _T("Ctrl+A pressed");
        }
        else if ((GetKeyState(VK_CONTROL) & 0x8000) && (wParam == 'B'))
        {
            strMsg = _T("Ctrl+B pressed");
        }
        else if ((GetKeyState(VK_CONTROL) & 0x8000) && (wParam == 'C'))
        {
            strMsg = _T("Ctrl+C pressed");
        }
        else
        {
            strMsg.Format(_T("Key pressed: %c"), wParam);
        }
        m_pWnd->SetWindowText(strMsg);
    }
    return CallNextHookEx(NULL, code, wParam, lParam);
}

MyFrameWnd.h

#pragma once

class CMyFrameWnd : public CFrameWnd
{
public:
    CMyFrameWnd();
    virtual ~CMyFrameWnd();

protected:
    DECLARE_MESSAGE_MAP()
};

MyFrameWnd.cpp

#include "stdafx.h"
#include "MyFrameWnd.h"

CMyFrameWnd::CMyFrameWnd()
{
}

CMyFrameWnd::~CMyFrameWnd()
{
}

BEGIN_MESSAGE_MAP(CMyFrameWnd, CFrameWnd)
END_MESSAGE_MAP()