Windows菜单的创建

1.创建一个Win32的空工程，然后添加一个主文件Source.cpp：

#include "windows.h"
#include "Header.h"
#include "tchar.h"
HMENU hmenu, haddmenu; //定义菜单句柄
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInst, LPSTR lpszCmdLine, int nCmdShow)
{
HWND hwnd;
MSG Msg;
HACCEL hAccel;
WNDCLASS wndclass;
//char lpszMenuName[] ="Menu";
wchar_t lpszMenuName[] = L"Menu";
//char lpszClassName[] = "菜单";
wchar_t lpszClassName[] = L"菜单";
//char lpszTitle[] = "My_Menu_Example";
wchar_t lpszTitle[] = L"My_Menu_Example";
wndclass.style = 0;
wndclass.lpfnWndProc = WndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
wndclass.hInstance = hInstance;
wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wndclass.lpszMenuName = lpszMenuName;		//加载窗口类菜单
wndclass.lpszClassName = lpszClassName;
if (!RegisterClass(&wndclass))
{
MessageBeep(0);
return FALSE;
}

hwnd = CreateWindow(lpszClassName,
lpszTitle,
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hInstance,
NULL);

ShowWindow(hwnd, nCmdShow);
UpdateWindow(hwnd);

//加载加速键资源
hAccel = LoadAccelerators(hInstance, lpszMenuName);
while (GetMessage(&Msg, NULL, 0, 0))
{
//在消息循环中截获加速键消息
if (!TranslateAccelerator(hwnd, hAccel, &Msg))
{
TranslateMessage(&Msg);
DispatchMessage(&Msg);
}
}

return Msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM  wParam, LPARAM  lParam)
{
switch (message)
{
//处理菜单消息
case WM_COMMAND:
switch (LOWORD(wParam))
{
case IDM_ADDMENU:					//在主菜单中添加弹出式统计计算菜单
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, L"求和");
AppendMenu(haddmenu, MF_ENABLED, IDM_fangcha, L"方差");
AppendMenu(haddmenu, MF_ENABLED, IDM_pinjunzhi, L"平均值");
AppendMenu(haddmenu, MF_ENABLED, IDM_junfanggen, L"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, L"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;
case IDM_DELMENU:       				//从主菜单中删除弹出式统计计算菜单
DeleteMenu(hmenu, 2, MF_BYPOSITION);  //删除统计计算菜单项
EnableMenuItem(hmenu, IDM_ADDMENU, MF_ENABLED);	//相应改变“文件”菜单中有关统计计算菜单项的属性
EnableMenuItem(hmenu, IDM_DELMENU, MF_GRAYED);
DrawMenuBar(hwnd); 					//重新显示窗口菜单
break;
case IDM_EXIT:
SendMessage(hwnd, WM_DESTROY, 0, 0);	//选择“退出”菜单项时，向应用程序发出WM_DESTROY消息
break;
}
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return  DefWindowProc(hwnd, message, wParam, lParam);
}
return 0;
}

2.添加一个头文件Header.h文件；

#define IDM_ADDMENU 15
#define IDM_DELMENU 16
#define IDM_EXIT 17
#define IDM_HELP 22
#define IDM_qiuhe 23
#define IDM_fangcha 24
#define IDM_pinjunzhi 25
#define IDM_junfanggen 26

3.添加一个资源文件Resource.rc，然后右击.rc文件用C++代码编辑器打开，将自动生成的代码全部删掉，输入以下内容：

#include "Header.h"
#include "windows.h"
MENU MENU DISCARDABLE
BEGIN
POPUP "文件(&F)"
BEGIN
MENUITEM "创建统计计算菜单项(&P)\t Ctrl+P", IDM_ADDMENU
MENUITEM "删除统计计算菜单项(&D)\t Ctrl+D", IDM_DELMENU, GRAYED
MENUITEM SEPARATOR
MENUITEM "退出(&X)", IDM_EXIT
END
MENUITEM "帮助(&H)", IDM_HELP

END

MENU ACCELERATORS MOVEABLE PURE
BEGIN
"^P", IDM_ADDMENU, ASCII
"^D", IDM_DELMENU, ASCII
END

运行结果如下：



可以测试，快捷键都是可以使用的。

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