WTL嵌入类的架构可以使整个程序很清晰，系统托盘气泡提示、上下文菜单处理可以分别独立出来，以下是实现代码，很清晰就不注释了。基本上这两个类很少需要修改，因此我把它们放到了系统包含文件搜索路径中。
//ContextMenu.h
#pragma once
template <class T>
class CContextMenu
{
public:
BOOL CreateContextMenu(UINT ID_Menu)
{
T* pT = static_cast<T*>(this);
CMenu menu;
menu.LoadMenu(ID_Menu);
CMenu SubMenu(menu.GetSubMenu(0));
POINT pos;
GetCursorPos(&pos);
SubMenu.TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON, pos.x, pos.y, pT->m_hWnd);
return TRUE;
}
};
//ShellIcon.h
#pragma once
#define WM_ICON WM_USER + 180
template <class T, class MenuT, int MenuID>
class CShellIcon : public MenuT
{
private:
NOTIFYICONDATA m_data;
UINT m_msgTaskbarRestart;
CString m_appName;
public:
CShellIcon()
{
m_appName.LoadString(IDS_APPNAME);
m_msgTaskbarRestart = RegisterWindowMessage(TEXT("TaskbarCreated"));
}
~CShellIcon()
{
Shell_NotifyIcon(NIM_DELETE, &m_data);
}
BOOL CreateShellIcon()
{
T* pT = static_cast<T*>(this);
SecureZeroMemory(&m_data, sizeof(m_data));
m_data.cbSize = sizeof(m_data);
m_data.hIcon = LoadIcon(_Module.get_m_hInst(), MAKEINTRESOURCE(IDR_MAINFRAME));
m_data.hWnd = pT->m_hWnd;
m_data.uID = IDR_MAINFRAME;
m_data.uFlags = NIF_ICON | NIF_MESSAGE | NIF_INFO | NIF_TIP;
m_data.uCallbackMessage = WM_ICON;
m_data.dwInfoFlags = NIIF_USER;
strcpy_s(m_data.szInfoTitle, m_appName);
strcpy_s(m_data.szTip, m_appName);
return Shell_NotifyIcon(NIM_ADD, &m_data);
}
void ModifyToolTips(LPCTSTR info)
{
strcpy_s(m_data.szInfo, info);
}
BOOL DispalyToolTips()
{
return Shell_NotifyIcon(NIM_MODIFY, &m_data);
}
BOOL BalloonToolTips(LPCTSTR info)
{
ModifyToolTips(LPCTSTR info);
return DispalyToolTips();
}
BEGIN_MSG_MAP(CShellIcon)
MESSAGE_HANDLER(WM_ICON, OnIcon)
MESSAGE_HANDLER(m_msgTaskbarRestart, OnRestart)
MESSAGE_HANDLER(WM_SIZE, OnSize)
CHAIN_MSG_MAP(MenuT)
END_MSG_MAP()
LRESULT OnIcon(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
T* pT = static_cast<T*>(this); char t;
if (wParam != IDR_MAINFRAME) return 1;
switch(lParam)
{
case WM_RBUTTONUP:
t = *m_data.szInfo;
*m_data.szInfo = '\0';
Shell_NotifyIcon(NIM_MODIFY, &m_data);
pT->CreateContextMenu(MenuID);
*m_data.szInfo = t;
break;
case WM_LBUTTONUP:
pT->ShowWindow(SW_SHOW);
OpenIcon(pT->m_hWnd);
break;
//去掉下面的注释可以使鼠标悬停在图标上时出现气泡提示，个人不太喜欢
case WM_MOUSEMOVE:
// DispalyToolTips(); break;
default: