ex_traydlg.cpp

来自「Visual C++应用教程-源代码 本书在复习C++基础知识后」· C++ 代码 · 共 246 行

// Ex_TrayDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Ex_Tray.h"
#include "Ex_TrayDlg.h"

#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()

/////////////////////////////////////////////////////////////////////////////
// CEx_TrayDlg dialog

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

BEGIN_MESSAGE_MAP(CEx_TrayDlg, CDialog)
	//{{AFX_MSG_MAP(CEx_TrayDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_SIZE()
	ON_WM_DESTROY()
	//}}AFX_MSG_MAP
	ON_MESSAGE(WM_ICON_NOTIFY, OnTrayNotify)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CEx_TrayDlg message handlers

BOOL CEx_TrayDlg::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 CEx_TrayDlg::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 CEx_TrayDlg::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 CEx_TrayDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

BOOL CEx_TrayDlg::AddTaskBarIcon(HWND hwnd, UINT uID, HICON hicon, LPSTR lpszTip)
{
    BOOL res; 
    NOTIFYICONDATA tnid; 
 
    tnid.cbSize 			= sizeof(NOTIFYICONDATA); 
    tnid.hWnd 				= hwnd; 
    tnid.uID 				= uID; 
    tnid.uFlags 			= NIF_MESSAGE | NIF_ICON | NIF_TIP; 
    tnid.uCallbackMessage	= WM_ICON_NOTIFY; 
    tnid.hIcon = hicon; 
    if (lpszTip) 
        lstrcpyn(tnid.szTip, lpszTip, sizeof(tnid.szTip)); 
    else 
        tnid.szTip[0] = '\0'; 
 
    res = Shell_NotifyIcon(NIM_ADD, &tnid); 
    if (hicon) DestroyIcon(hicon); 
    return res; 

}

BOOL CEx_TrayDlg::DeleteTaskBarIcon(HWND hwnd, UINT uID)
{
    BOOL res; 
    NOTIFYICONDATA tnid; 
 
    tnid.cbSize 	= sizeof(NOTIFYICONDATA); 
    tnid.hWnd 	= hwnd; 
    tnid.uID 	= uID; 
         
    res = Shell_NotifyIcon(NIM_DELETE, &tnid); 
    return res; 

}

void CEx_TrayDlg::OnSize(UINT nType, int cx, int cy) 
{
	CDialog::OnSize(nType, cx, cy);
	
	// TODO: Add your message handler code here
	if (nType==SIZE_MINIMIZED){
		AddTaskBarIcon( m_hWnd, IDR_MAINFRAME, m_hIcon, "托盘图标操作示例");
		ShowWindow(SW_HIDE);
	} else {
		DeleteTaskBarIcon(m_hWnd, IDR_MAINFRAME);
	}	
}

void CEx_TrayDlg::OnDestroy() 
{
	CDialog::OnDestroy();
	
	// TODO: Add your message handler code here
	DeleteTaskBarIcon( m_hWnd, IDR_MAINFRAME );	
}

void CEx_TrayDlg::OnTrayNotify(WPARAM wParam, LPARAM lParam)
{
	UINT uID		= (UINT) wParam; 
    UINT uMouseMsg	= (UINT) lParam;      

	if (uID == IDR_MAINFRAME)
	{
		if (uMouseMsg == WM_LBUTTONDOWN)
		{
			ShowWindow(SW_SHOWNORMAL);   
			return;
		}
	}
}