2. 使用本类的步骤如下:
第一步:在VC变成环境下,建立一个工程,基于对话框或者是单文档(或者是多文档)你随便,所有的选项都取默认值即可。
第二步:在mainfrm.h中定义变量CSystemTray m_TrayIcon;并添加函数声明:
afx_msg LRESULT OnTrayNotification(WPARAM wParam, LPARAM lParam);
afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
第三步:在StaAFX.h中定义消息:
#define WM_ICON_NOTIFY WM_USER + 1
第四步:自定义菜单IDR_POPUPMENU,其中最少包括一项:ID:ID_VIEW_MAIN_WINDOW,Caption为"显示主窗口",并为该项在类CmainFrame中添加消息映射函数,COMMAND和UPDATE_COMMAND_UI。
第五步:在Mainframe.cpp中添加以下内容:
1. BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd) ON_COMMAND(ID_VIEW_MAIN_WINDOW, OnViewMainWindow) ON_UPDATE_COMMAND_UI(ID_VIEW_MAIN_WINDOW, OnUpdateViewMainWindow) ON_MESSAGE(WM_ICON_NOTIFY, OnTrayNotification) ON_WM_SYSCOMMAND() //}}AFX_MSG_MAP END_MESSAGE_MAP() 2. void CMainFrame::OnViewMainWindow() { if(IsWindowVisible()) { ShowWindow(SW_SHOWMINIMIZED); ShowWindow(SW_HIDE); m_TrayIcon.SetIcon(IDI_ICON1); } else { ShowWindow(SW_SHOW); ShowWindow(SW_RESTORE); m_TrayIcon.SetIcon(IDI_ICON2); } }
void CMainFrame::OnUpdateViewMainWindow(CCmdUI* pCmdUI) { pCmdUI->SetCheck(IsWindowVisible()); } 3. int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct) { if (CFrameWnd::OnCreate(lpCreateStruct) == -1) return -1; //创建托盘图标 if (!m_TrayIcon.Create(this, WM_ICON_NOTIFY,"大屏实时显示程序", NULL, IDR_POPUPMENU)) return -1; m_TrayIcon.SetIcon(IDI_ICON1); SetMenu(NULL); return 0; } 4. LRESULT CMainFrame::OnTrayNotification(WPARAM wParam, LPARAM lParam) { if (wParam != IDR_POPUPMENU) return 0L;
CMenu menu, *pSubMenu; if (LOWORD(lParam) == WM_RBUTTONUP) { CPoint pos; GetCursorPos(&pos); if (!menu.LoadMenu(IDR_POPUPMENU)) return 0;
if (!(pSubMenu=menu.GetSubMenu(0))) return 0;
::SetMenuDefaultItem(pSubMenu->m_hMenu, 3, TRUE); SetForegroundWindow(); pSubMenu->TrackPopupMenu(TPM_RIGHTALIGN | TPM_BOTTOMALIGN | TPM_RIGHTBUTTON, pos.x, pos.y, this); menu.DestroyMenu(); } else if (LOWORD(lParam) == WM_LBUTTONDBLCLK) { if (!menu.LoadMenu(IDR_POPUPMENU)) return 0; if (!(pSubMenu = menu.GetSubMenu(0))) return 0;
SetForegroundWindow(); //激活第2个菜单项 SendMessage(WM_COMMAND, pSubMenu->GetMenuItemID(1), 0); menu.DestroyMenu();
} return 0; }
void CMainFrame::OnSysCommand(UINT nID, LPARAM lParam) { if(nID==SC_MINIMIZE) { ShowWindow(SW_SHOWMINIMIZED); ShowWindow(SW_HIDE); } else CFrameWnd::OnSysCommand(nID, lParam); } 3. 附录:类的实现代码 CsystemTray的头文件 #ifndef _INCLUDED_SYSTEMTRAY_H_ #define _INCLUDED_SYSTEMTRAY_H_
///////////////////////////////////////////////////////////////////////////// // CSystemTray window
class CSystemTray : public CObject { // Construction/destruction public: CSystemTray(); CSystemTray(CWnd* pWnd, UINT uCallbackMessage, LPCTSTR szTip, HICON icon, UINT uID); virtual ~CSystemTray();
// Operations public: CFrameWnd * m_pFrame; BOOL Enabled() { return m_bEnabled; } BOOL Visible() { return !m_bHidden; }
//Create the tray icon Create(CWnd* pWnd, UINT uCallbackMessage, LPCTSTR szTip, HICON icon, UINT uID);
//Change or retrieve the Tooltip text BOOL SetTooltipText(LPCTSTR pszTooltipText); BOOL SetTooltipText(UINT nID); CString GetTooltipText() const;
//Change or retrieve the icon displayed BOOL SetIcon(HICON hIcon); BOOL SetIcon(LPCTSTR lpIconName); BOOL SetIcon(UINT nIDResource); BOOL SetStandardIcon(LPCTSTR lpIconName); BOOL SetStandardIcon(UINT nIDResource); HICON GetIcon() const; void HideIcon(); void ShowIcon(); void RemoveIcon(); void MoveToRight();
//Change or retrieve the window to send notification messages to BOOL SetNotificationWnd(CWnd* pNotifyWnd); CWnd* GetNotificationWnd() const;
//Default handler for tray notification message
// Overrides // ClassWizard generated virtual function overrides //{{AFX_VIRTUAL(CSystemTray) //}}AFX_VIRTUAL
// Implementation protected: BOOL m_bEnabled; // does O/S support tray icon? BOOL m_bHidden; // Has the icon been hidden? NOTIFYICONDATA m_tnd;
DECLARE_DYNAMIC(CSystemTray) };
#endif
/////////////////////////////////////////////////// CsystemTray的实现文件 #include "stdafx.h" #include "SystemTray.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif
IMPLEMENT_DYNAMIC(CSystemTray, CObject)
///////////////////////////////////////////////// // CSystemTray construction/creation/destruction
CSystemTray::CSystemTray() { memset(&m_tnd, 0, sizeof(m_tnd)); m_bEnabled = FALSE; m_bHidden = FALSE; }
CSystemTray::CSystemTray(CWnd* pWnd, UINT uCallbackMessage, LPCTSTR szToolTip, HICON icon, UINT uID) { Create(pWnd, uCallbackMessage, szToolTip, icon, uID); m_bHidden = FALSE; }
BOOL CSystemTray::Create(CWnd* pWnd, UINT uCallbackMessage, LPCTSTR szToolTip, HICON icon, UINT uID) { // this is only for Windows 95 (or higher) VERIFY(m_bEnabled = ( GetVersion() & 0xff ) >= 4); if (!m_bEnabled) return FALSE;
//Make sure Notification window is valid VERIFY(m_bEnabled = (pWnd && ::IsWindow(pWnd->GetSafeHwnd()))); if (!m_bEnabled) return FALSE;
//Make sure we avoid conflict with other messages ASSERT(uCallbackMessage >= WM_USER);
//Tray only supports tooltip text up to 64 characters ASSERT(_tcslen(szToolTip) <= 64);
// load up the NOTIFYICONDATA structure m_tnd.cbSize = sizeof(NOTIFYICONDATA); m_tnd.hWnd = pWnd->GetSafeHwnd(); m_tnd.uID = uID; m_tnd.hIcon = icon; m_tnd.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP; m_tnd.uCallbackMessage = uCallbackMessage; strcpy (m_tnd.szTip, szToolTip);
// Set the tray icon m_pFrame = (CFrameWnd*)pWnd; VERIFY(m_bEnabled = Shell_NotifyIcon(NIM_ADD, &m_tnd)); return m_bEnabled; }
CSystemTray::~CSystemTray() { RemoveIcon(); }
///////////////////////////////////////////// // CSystemTray icon manipulation
void CSystemTray::MoveToRight() { HideIcon(); ShowIcon(); }
void CSystemTray::RemoveIcon() { if (!m_bEnabled) return;
m_tnd.uFlags = 0; Shell_NotifyIcon(NIM_DELETE, &m_tnd); m_bEnabled = FALSE; }
void CSystemTray::HideIcon() { if (m_bEnabled && !m_bHidden) { m_tnd.uFlags = NIF_ICON; Shell_NotifyIcon (NIM_DELETE, &m_tnd); m_bHidden = TRUE; } }
void CSystemTray::ShowIcon() { if (m_bEnabled && m_bHidden) { m_tnd.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP; Shell_NotifyIcon(NIM_ADD, &m_tnd); m_bHidden = FALSE; } }
BOOL CSystemTray::SetIcon(HICON hIcon) { if (!m_bEnabled) return FALSE;
m_tnd.uFlags = NIF_ICON; m_tnd.hIcon = hIcon;
return Shell_NotifyIcon(NIM_MODIFY, &m_tnd); }
BOOL CSystemTray::SetIcon(LPCTSTR lpszIconName) { HICON hIcon = AfxGetApp()->LoadIcon(lpszIconName);
return SetIcon(hIcon); }
BOOL CSystemTray::SetIcon(UINT nIDResource) { HICON hIcon = AfxGetApp()->LoadIcon(nIDResource);
return SetIcon(hIcon); }
BOOL CSystemTray::SetStandardIcon(LPCTSTR lpIconName) { HICON hIcon = LoadIcon(NULL, lpIconName);
return SetIcon(hIcon); }
BOOL CSystemTray::SetStandardIcon(UINT nIDResource) { HICON hIcon = ::LoadIcon(AfxGetInstanceHandle(), MAKEINTRESOURCE(nIDResource));
return SetIcon(hIcon); }
HICON CSystemTray::GetIcon() const { HICON hIcon = NULL; if (m_bEnabled) hIcon = m_tnd.hIcon;
return hIcon; }
////////////////////////////////////////////////// // CSystemTray tooltip text manipulation
BOOL CSystemTray::SetTooltipText(LPCTSTR pszTip) { if (!m_bEnabled) return FALSE;
m_tnd.uFlags = NIF_TIP; _tcscpy(m_tnd.szTip, pszTip);
return Shell_NotifyIcon(NIM_MODIFY, &m_tnd); }
BOOL CSystemTray::SetTooltipText(UINT nID) { CString strText; VERIFY(strText.LoadString(nID));
return SetTooltipText(strText); }
CString CSystemTray::GetTooltipText() const { CString strText; if (m_bEnabled) strText = m_tnd.szTip;
return strText; }
//////////////////////////////////////////////// // CSystemTray notification window stuff
BOOL CSystemTray::SetNotificationWnd(CWnd* pWnd) { if (!m_bEnabled) return FALSE;
//Make sure Notification window is valid ASSERT(pWnd && ::IsWindow(pWnd->GetSafeHwnd()));
m_tnd.hWnd = pWnd->GetSafeHwnd(); m_tnd.uFlags = 0;
return Shell_NotifyIcon(NIM_MODIFY, &m_tnd); }
CWnd* CSystemTray::GetNotificationWnd() const { return CWnd::FromHandle(m_tnd.hWnd); }
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