//------------------ code begin ----------------//在類中定義的變量：// 雙擊托盤圖標時對應的菜單項 id.UINT m_nDClickMenuItemId;// 彈出菜單句柄.m_hMenu m_hMenu;///動態創建右鍵菜單項.///@param item_text 菜單項文本字符串,以逗號分隔.///@param dbclick_id 雙擊托盤圖標對應的菜單項id.// 調用示例:// create_menu("顯示/隱藏,退出", 40001);BOOL CTrayIconMenu::create_menu(char* item_text, unsigned int dbclick_id){  m_nDClickMenuItemId = dbclick_id;  // 動態創建彈出菜單  m_hMenu = ::CreatePopupMenu();  if (m_hMenu == NULL) {    return 0;  }  int i=0;  int msgid=40001;  // 第一項菜單項的消息id.  BOOL ret = 0;  char * pText = ::strtok(item_text, ",");  while( pText != NULL )  {    ret = ::AppendMenu(m_hMenu, MF_ENABLED | MF_STRING, msgid + i, pText);    pText = ::strtok( NULL, "," );    i++;  }  return 1;}///響應消息顯示菜單.LRESULT CTrayIconMenu::on_msg(WPARAM wid, LPARAM event){  // 一些其他處理代碼...  POINT mouse;  ::GetCursorPos(&mouse);  // hWnd 為應用程序主窗口句柄.  if (event == WM_RBUTTONUP)  {    ::SetForegroundWindow(hWnd);    ::TrackPopupMenu(m_hMenu, 0, mouse.x, mouse.y, 0, hWnd, NULL);  }  return 1;}//------------------ code end ----------------