【MFC】绑定数据到菜单项目并获取内容

// 绑定dwItemData到菜单项
MENUITEMINFO mi = {sizeof(MENUITEMINFO)};
memset(&mi,0,sizeof(mi));

mi.cbSize = sizeof(MENUITEMINFO);
mi.fMask = MIIM_DATA;
mi.fType = MFT_STRING;
mi.dwItemData = code;

SetMenuItemInfo(hMenu, menuIndex, TRUE, &mi);
-------------------
// 获取菜单项绑定的dwItemData
HMENU hMenu = GetSubMenu(m_btnRoute.m_hMenu,0);
MENUITEMINFO mi = {sizeof(MENUITEMINFO)};
memset(&mi,0,sizeof(mi));

mi.cbSize = sizeof(MENUITEMINFO);
mi.fMask = MIIM_DATA;
mi.fType = MFT_STRING;
mi.dwItemData = 0;

GetMenuItemInfo(hMenu, nId - ID_BASE, TRUE, &mi);