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利用Visual C++实现系统托盘程序
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日期:2006-06-30 人气: 出处:CSDN

二、编程步骤

  1、 启动Visual C++6.0,生成一个单文档的应用程序TrayTest,取消文档视图支持;

  2、 在CMainFrame类中添加自定义消息#define WM_MY_TRAY_NOTIFICATION WM_USER+0,并在该类中为此自定义消息手动添加消息映射ON_MESSAGE(WM_MY_TRAY_NOTIFICATION, OnTrayNotification)和消息响应函数afx_msg LRESULT OnTrayNotification(WPARAM wp, LPARAM lp);

  3、 设计二个图标添加到项目中,其ID标志分别为"IDI_MYICON"、"IDI_MYICON2",作为托盘显示时的图标;

  4、 在CMainFrame类中添加下述变量: CTrayIcon m_trayIcon(用来操作图标的类对象)、CEdit m_wndEdit(编辑框用来显示所跟踪到的鼠标消息)、int m_iWhichIcon(决定当前托盘使用哪个图标)、BOOL m_bShutdown(是否关闭当前拖盘程序标志)、BOOL m_bShowTrayNotifications(是否显示托盘消息标志);

  5、 为程序的IDR_MAINFRAME添加处理菜单项和托盘的上下文菜单IDI_TRAYICON(具体的菜单项的标题和ID标志符参见代码部分),然后使用Class Wizard为各个菜单项添加处理函数;

  6、 添加代码,编译运行程序。

///////////////////////////////////////////////CTrayIcon类的头文件;
#ifndef _TRAYICON_H
#define _TRAYICON_H
class CTrayIcon : public CCmdTarget {
 protected:
  DECLARE_DYNAMIC(CTrayIcon)
  NOTIFYICONDATA m_nid; // struct for Shell_NotifyIcon args
 public:
  CTrayIcon(UINT uID);
  ~CTrayIcon();
  // Call this to receive tray notifications
  void SetNotificationWnd(CWnd* pNotifyWnd, UINT uCbMsg);
  BOOL SetIcon(UINT uID); // main variant you want to use
  BOOL SetIcon(HICON hicon, LPCSTR lpTip);
  BOOL SetIcon(LPCTSTR lpResName, LPCSTR lpTip)
  { return SetIcon(lpResName ?
   AfxGetApp()->LoadIcon(lpResName) : NULL, lpTip); }
  BOOL SetStandardIcon(LPCTSTR lpszIconName, LPCSTR lpTip)
  { return SetIcon(::LoadIcon(NULL, lpszIconName), lpTip); }
  virtual LRESULT OnTrayNotification(WPARAM uID, LPARAM lEvent);
};
#endif
///////////////////////////////////////////////////CTrayIcon类的.CPP文件
#include "stdafx.h"
#include "trayicon.h"
#include // for AfxLoadString
IMPLEMENT_DYNAMIC(CTrayIcon, CCmdTarget)
CTrayIcon::CTrayIcon(UINT uID)
{
 memset(&m_nid, 0 , sizeof(m_nid)); // Initialize NOTIFYICONDATA
 m_nid.cbSize = sizeof(m_nid);
 m_nid.uID = uID; // never changes after construction
 AfxLoadString(uID, m_nid.szTip, sizeof(m_nid.szTip));
 // Use resource string as tip if there is one
}

CTrayIcon::~CTrayIcon()
{
 SetIcon(0); // remove icon from system tray
}

void CTrayIcon::SetNotificationWnd(CWnd* pNotifyWnd, UINT uCbMsg)
{
 // Set notification window. It must created already.
 ASSERT(pNotifyWnd==NULL    ::IsWindow(pNotifyWnd->GetSafeHwnd()));
 m_nid.hWnd = pNotifyWnd->GetSafeHwnd();
 ASSERT(uCbMsg==0    uCbMsg>=WM_USER);
 m_nid.uCallbackMessage = uCbMsg;
}

BOOL CTrayIcon::SetIcon(UINT uID)
{
 // Sets both the icon and tooltip from resource ID ,To remove the icon, call SetIcon(0)
 HICON hicon=NULL;
 if (uID) {
  AfxLoadString(uID, m_nid.szTip, sizeof(m_nid.szTip));
  hicon = AfxGetApp()->LoadIcon(uID);
 }
 return SetIcon(hicon, NULL);
}

BOOL CTrayIcon::SetIcon(HICON hicon, LPCSTR lpTip)
{
 // Common SetIcon for all overloads.
 UINT msg;
 m_nid.uFlags = 0;
 if (hicon) {
  // Set the icon
  msg = m_nid.hIcon ? NIM_MODIFY : NIM_ADD;
  m_nid.hIcon = hicon; // Add or replace icon in system tray
  m_nid.uFlags  = NIF_ICON;
 } else {
  if (m_nid.hIcon==NULL) // remove icon from tray
   return TRUE; // already deleted
  msg = NIM_DELETE;
 }
 if (lpTip) // Use the tip, if any
  strncpy(m_nid.szTip, lpTip, sizeof(m_nid.szTip));
 if (m_nid.szTip[0])
  m_nid.uFlags  = NIF_TIP;
 if (m_nid.uCallbackMessage && m_nid.hWnd) // Use callback if any
  m_nid.uFlags  = NIF_MESSAGE;
  BOOL bRet = Shell_NotifyIcon(msg, &m_nid); // Do it
 if (msg==NIM_DELETE    !bRet)
  m_nid.hIcon = NULL; // failed
 return bRet;
}
LRESULT CTrayIcon::OnTrayNotification(WPARAM wID, LPARAM lEvent)
{
 if (wID!=m_nid.uID    (lEvent!=WM_RBUTTONUP && lEvent!=WM_LBUTTONDBLCLK))
  return 0;
 CMenu menu;//装载上下文菜单;
 if (!menu.LoadMenu(m_nid.uID))
  return 0;
 CMenu* pSubMenu = menu.GetSubMenu(0);
 if (!pSubMenu)
  return 0;
 if (lEvent==WM_RBUTTONUP) {//设置第一个菜单项为默认菜单项目
  ::SetMenuDefaultItem(pSubMenu->m_hMenu, 0, TRUE);
  //将当前菜单作为上下文菜单;
  CPoint mouse;
  GetCursorPos(&mouse);
  ::SetForegroundWindow(m_nid.hWnd);
  ::TrackPopupMenu(pSubMenu->m_hMenu, 0, mouse.x, mouse.y, 0,m_nid.hWnd, NULL);
 } else // double click: execute first menu item
  ::SendMessage(m_nid.hWnd, WM_COMMAND, pSubMenu->GetMenuItemID(0), 0);
 return 1;
}

///////////////////////////////// MainFrm.h : interface of the CMainFrame class
#if !defined(AFX_MAINFRM_H__9ED70A69_C975_4F20_9D4E_B2877E3575D0__INCLUDED_)
#define AFX_MAINFRM_H__9ED70A69_C975_4F20_9D4E_B2877E3575D0__INCLUDED_
#if _MSC_VER >1000
#pragma once
#endif // _MSC_VER >1000

#include "trayicon.h"
class CMainFrame : public CFrameWnd
{
 public:
  CMainFrame();
 protected:
  DECLARE_DYNAMIC(CMainFrame)
  // Attributes
 public:
  // Overrides
  // ClassWizard generated virtual function overrides
  //{{AFX_VIRTUAL(CMainFrame)
  //}}AFX_VIRTUAL
  // Implementation
 public:
  virtual ~CMainFrame();
  #ifdef _DEBUG
   virtual void AssertValid() const;
   virtual void Dump(CDumpContext& dc) const;
  #endif
 protected: // control bar embedded members
  CStatusBar m_wndStatusBar;
  CTrayIcon m_trayIcon; // my tray icon
  CEdit m_wndEdit; // to display tray notifications
  int m_iWhichIcon; // which HICON to use
  BOOL m_bShutdown; // OK to terminate TRAYTEST
  BOOL m_bShowTrayNotifications; // display info in main window
  // Generated message map functions
 protected:
  //{{AFX_MSG(CMainFrame)
   afx_msg LRESULT OnTrayNotification(WPARAM wp, LPARAM lp);
   afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
   afx_msg void OnToggleIcon();
   afx_msg void OnViewClear();
   afx_msg void OnViewNotifications();
   afx_msg void OnUpdateViewClear(CCmdUI* pCmdUI);
   afx_msg void OnUpdateViewNotifications(CCmdUI* pCmdUI);
   afx_msg void OnClose();
   afx_msg void OnAppOpen();
   afx_msg void OnAppSuspend();
   // NOTE - the ClassWizard will add and remove member functions here.
   // DO NOT EDIT what you see in these blocks of generated code!
  //}}AFX_MSG
 DECLARE_MESSAGE_MAP()
};

///////////////////////////////////////////////CMainFrm.cpp
#include "stdafx.h"
#include "TrayTest.h"
#include "MainFrm.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

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