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MFC實現最小化到托盤

編輯：C++入門知識

先新建一個MFC工程TimeWakeDlg
源代碼是
TimeWakeDlg.cpp
[cpp]
// TimeWakeDlg.cpp : implementation file
//

#include "stdafx.h"
#include "TimeWake.h"
#include "TimeWakeDlg.h"
#include "Exit.h"

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

#define WM_SHOWTASK WM_USER +1

NOTIFYICONDATA nid;

/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CTimeWakeDlg dialog

CTimeWakeDlg::CTimeWakeDlg(CWnd* pParent /*=NULL*/)
    : CDialog(CTimeWakeDlg::IDD, pParent)
{
    //{{AFX_DATA_INIT(CTimeWakeDlg)
        // 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 CTimeWakeDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    //{{AFX_DATA_MAP(CTimeWakeDlg)
        // NOTE: the ClassWizard will add DDX and DDV calls here
    //}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CTimeWakeDlg, CDialog)
    //{{AFX_MSG_MAP(CTimeWakeDlg)
    ON_WM_SYSCOMMAND()
    ON_WM_PAINT()
    ON_WM_QUERYDRAGICON()
    ON_MESSAGE(WM_SHOWTASK,OnShowTask)
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTimeWakeDlg message handlers

BOOL CTimeWakeDlg::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

    // TODO: Add extra initialization here

    return TRUE; // return TRUE unless you set the focus to a control
}

void CTimeWakeDlg::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 CTimeWakeDlg::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 CTimeWakeDlg::OnQueryDragIcon()
{
    return (HCURSOR) m_hIcon;
}

LRESULT CTimeWakeDlg::OnShowTask(WPARAM wParam,LPARAM lParam)
{
    if (wParam != IDR_MAINFRAME)
    {
        return 1;
    }
    switch(lParam)
    {
    case WM_RBUTTONUP:
        {
            LPPOINT lpoint = new tagPOINT;
            ::GetCursorPos(lpoint);
            CMenu menu;
            menu.CreatePopupMenu();
            menu.AppendMenu(MF_STRING,WM_DESTROY,"關閉");
            menu.TrackPopupMenu(TPM_LEFTALIGN,lpoint->x,lpoint->y,this);
            HMENU hmenu = menu.Detach();
            menu.DestroyMenu();
            delete lpoint;
            this->DestroyWindow();
        }
        break;
    case WM_LBUTTONDBLCLK:
        {
            this->ShowWindow(SW_SHOW);
            Shell_NotifyIcon(NIM_DELETE,&nid);
        }
        break;
    }
    return 0;
}

void CTimeWakeDlg::OnSize(UINT nType,int cx,int cy)
{
    CDialog::OnSize(nType,cx,cy);
    if (nType == SIZE_MINIMIZED)
    {
        ShowWindow(SW_HIDE);
    }
}

void CTimeWakeDlg::OnCancel()
{
    CExit mExit;
    if (IDOK == mExit.DoModal())
    {

    }
    if (mExit.m_Radio == FALSE)
    {
    // MessageBox("最小到托盤");
        nid.cbSize = (DWORD)sizeof(NOTIFYICONDATA);
        nid.hWnd = this->m_hWnd;
        nid.uID = IDR_MAINFRAME;
        nid.uFlags = NIF_ICON | NIF_MESSAGE | NIF_TIP;
        nid.uCallbackMessage = WM_SHOWTASK;
        nid.hIcon = LoadIcon(AfxGetInstanceHandle(),MAKEINTRESOURCE(IDR_MAINFRAME));
        strcpy(nid.szTip,"計劃任務提醒");//
        Shell_NotifyIcon(NIM_ADD,&nid);
        this->ShowWindow(SW_HIDE);
    }
    else
    {
    // MessageBox("關閉");
        CDialog::OnCancel();
    }
}

TimeWakeDlg.h
[cpp]
// TimeWakeDlg.h : header file
//

#if !defined(AFX_TIMEWAKEDLG_H__0D6108FA_D2EB_4C1E_8013_5D4C6617D62E__INCLUDED_)
#define AFX_TIMEWAKEDLG_H__0D6108FA_D2EB_4C1E_8013_5D4C6617D62E__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

/////////////////////////////////////////////////////////////////////////////
// CTimeWakeDlg dialog

class CTimeWakeDlg : public CDialog
{
// Construction
public:
    LRESULT OnShowTask(WPARAM wParam,LPARAM lParam);
    CTimeWakeDlg(CWnd* pParent = NULL); // standard constructor
    void OnSize(UINT nType,int cx,int cy);
    void OnCancel();
// Dialog Data
    //{{AFX_DATA(CTimeWakeDlg)
    enum { IDD = IDD_TIMEWAKE_DIALOG };
        // NOTE: the ClassWizard will add data members here
    //}}AFX_DATA

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

    //}}AFX_VIRTUAL

// Implementation
protected:
    HICON m_hIcon;

    // Generated message map functions
    //{{AFX_MSG(CTimeWakeDlg)
    virtual BOOL OnInitDialog();
    afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
    afx_msg void OnPaint();
    afx_msg HCURSOR OnQueryDragIcon();

    //}}AFX_MSG
    DECLARE_MESSAGE_MAP()
};

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_TIMEWAKEDLG_H__0D6108FA_D2EB_4C1E_8013_5D4C6617D62E__INCLUDED_)