LRESULT CALLBACK WndProc(.) Switch(message) Icase WM_COMMAND switch(LOWORD( wParam) case DM ADDMENU ∥在主菜单中添加弹出式菜单 hmenu=GetMenu (hwnd); J获取主菜单句柄 haddmenu=CreateMenu( 动态创建菜单 ∥在创建的菜单中增加菜单项 AppendMenu( haddmenu, MF_ENABLED,IDM_qiuhe,"求和 opendMenu(haddmenu, MF ENABLED, IDM_fan9~y均值 A AppendMenu(haddmenu, MF_ENABLED, DM_pinjunzhi Append(haddmenu, MF_ENABLED, IDM-junfanggen,均方根"; 将创建的弹出式菜单插入主菜单中 InsertMenu(hmenu, 2, MF_POPUPMF-_BYPOSITION U| NThaddmenu,"练计计算(8C)"); 相应改变菜单中有关绘图统计计算菜单项的属性 EnableMenultem(hmenu, IDM_ADDMENU, MF- GRAYED) EnableMenultem(hmenu,IDM_DELMENU, MF_ENABLED; DrawMenuBar(hwnd) ∥新显示窗口菜单 break;22 LRESULT CALLBACK WndProc(……) {switch(message) {case WM_COMMAND: switch(LOWORD(wParam)) { case IDM_ADDMENU: //在主菜单中添加弹出式菜单 hmenu=GetMenu(hwnd); //获取主菜单句柄 haddmenu=CreateMenu(); //动态创建菜单 //在创建的菜单中增加菜单项 AppendMenu(haddmenu,MF_ENABLED,IDM_qiuhe,"求和"); AppendMenu(haddmenu,MF_ENABLED,IDM_fangcha,“方差”); AppendMenu(haddmenu,MF_ENABLED,IDM_pinjunzhi,"平均值"); AppendMenu(haddmenu,MF_ENABLED,IDM_junfanggen,"均方根"); //将创建的弹出式菜单插入主菜单中 InsertMenu(hmenu,2,MF_POPUP|MF_BYPOSITION, (UINT)haddmenu,"统计计算(&C)"); //相应改变菜单中有关绘图统计计算菜单项的属性 EnableMenuItem(hmenu,IDM_ADDMENU,MF_GRAYED); EnableMenuItem(hmenu,IDM_DELMENU,MF_ENABLED); DrawMenuBar(hwnd); //重新显示窗口菜单 break;