MFC

#include <afxwin.h>

class MyApp :public CWinApp//app类
{
public:
	virtual BOOL InitInstance();//重写父类的初始化函数

};


class MyFrame :public CFrameWnd//窗口框架类
{
public:
	MyFrame();//窗口类构造函数

	DECLARE_MESSAGE_MAP()//消息映射机制的声明宏

	鼠标点击处理函数的声明
	afx_msg void OnLButtonDown(UINT, CPoint);
};

#include "mfc.h"

MyApp app;
BOOL MyApp::InitInstance()
{
	MyFrame * pFrame = new MyFrame;
	//pFrame->Create(NULL, TEXT("mfc"));

	pFrame->ShowWindow(SW_SHOWNORMAL);
	pFrame->UpdateWindow();

	m_pMainWnd = pFrame;

	return TRUE;
}
//消息映射分界宏，相当于消息处理函数
BEGIN_MESSAGE_MAP(MyFrame,CFrameWnd)
	
	ON_WM_LBUTTONDOWN()//鼠标左键按下的映射入口，消息映射根据映射入口找到 afx_msg void OnLButtonDown( UINT, CPoint )
					   //#define ON_WM_LBUTTONDOWN( ) afx_msg void OnLButtonDown( UINT, CPoint ) 
END_MESSAGE_MAP()

MyFrame::MyFrame()
{
	//pFrame->Create(NULL, TEXT("mfc"));
	Create(NULL, TEXT("mfc"));

	
}
//鼠标点击处理函数的实现
void MyFrame::OnLButtonDown(UINT, CPoint)
{
	CString str;
	str.Format(TEXT("%d %d"), 10, 20);
	MessageBox(str);
}