VC++实现小托盘的处理

// 实验一Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "实验一.h"
#include "实验一Dlg.h"

//添加的头文件
#include "shlwapi.h"
#define WM_NOTIFYICON	WM_USER+1

//
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyDlg dialog

CMyDlg::CMyDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMyDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMyDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMyDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMyDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMyDlg, CDialog)
	//{{AFX_MSG_MAP(CMyDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	ON_MESSAGE(WM_NOTIFYICON, OnNotifyIcon)   //消息映射部分加入
	ON_COMMAND(ID_SHOW, OnShow)        //执行定义的函数
	ON_COMMAND(ID_EXIT, OnExit)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyDlg message handlers

BOOL CMyDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	//初始化NOTIFYICONDATA结构

	m_Nid.cbSize = sizeof(NOTIFYICONDATA);
	m_Nid.hWnd = m_hWnd;
	m_Nid.uID = 100;
	m_Nid.uFlags = NIF_ICON | NIF_MESSAGE | NIF_TIP;
	m_Nid.uCallbackMessage = WM_NOTIFYICON;
	m_Nid.hIcon = (HICON)LoadImage(AfxGetInstanceHandle(), 
		MAKEINTRESOURCE(IDR_MAINFRAME), IMAGE_ICON, 16, 16, NULL);
	StrCpy(m_Nid.szTip, _T("Demo"));
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CMyDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CMyDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CMyDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CMyDlg::OnButton1() 
{
	// TODO: Add your control notification handler code here
	//隐藏窗口
	ShowWindow(SW_HIDE);
	
	//在任务栏中添加图标 
	Shell_NotifyIcon(NIM_ADD, &m_Nid);
}

void CMyDlg::OnNotifyIcon(WPARAM wParam, LPARAM lParam)
{
	if (wParam == 100)
	{
		if (lParam == WM_LBUTTONDBLCLK)      //当点击左键的时候
		{
			//删除任务栏中的图标 
			Shell_NotifyIcon(NIM_DELETE, &m_Nid);
			//显示窗口
			ShowWindow(SW_SHOWNORMAL);
			UpdateWindow();
		}

		else 
	if (lParam == WM_RBUTTONDOWN || lParam == WM_LBUTTONDOWN)  //当点击右键的时候
		{
			//显示快捷子菜单
			CMenu menu; 
			if (!menu.LoadMenu(IDR_MENU1))
			{
				return;
			}
			CPoint point; 
			GetCursorPos(&point); 
			SetForegroundWindow();
			CMenu* pSubMenu = menu.GetSubMenu(0);
			if (pSubMenu == NULL)
			{
				return;
			}
			pSubMenu->TrackPopupMenu(TPM_LEFTBUTTON | TPM_RIGHTBUTTON, 
				point.x, point.y, this, NULL); 
			PostMessage(WM_NULL, 0, 0);  
		}
	}
}

void CMyDlg::OnShow()   //菜单项的显示实现
{
	//删除任务栏中的图标 
	Shell_NotifyIcon(NIM_DELETE , &m_Nid);
	//显示窗口
	ShowWindow(SW_SHOWNORMAL);
	UpdateWindow();
}

void CMyDlg::OnExit()     //菜单项的退出实现
{
	//删除任务栏中的图标 
	Shell_NotifyIcon(NIM_DELETE, &m_Nid);
	//关闭窗口
	SendMessage(WM_CLOSE);
}