MFC Menu

创建menu

1. 创建菜单资源

2. 定义CFrameWnd的成员变量

    Menu menu;
   

3. 在CMyFrameWnd::OnCreate中加载菜单

    menu.LoadMenuW(IDR_MENU1);
    this->SetMenu(&menu);
   

菜单消息

//ON_COMMAND(菜单项ID，消息处理函数名)
ON_COMMAND(ID_FILE_NEW,OnFileNew)

afx_msg void OnFileNew();

void CMyFrameWnd::OnFileNew()
{
	AfxMessageBox(_T("Hello Menu"));
}

命令消息的处理顺序 ON_COMMAND

框架类 -> 应用程序类，只有当框架类中没有命令消息处理顺序，才会去应用程序类中找。

设置菜单选中状态

ON_WM_INITMENUPOPUP()

void CMyFrameWnd::OnInitMenuPopup(CMenu* pPopupMenu, UINT nIndex, BOOL bSysMenu)
{
	CFrameWnd::OnInitMenuPopup(pPopupMenu, nIndex, bSysMenu);

	// TODO: Add your message handler code here

	pPopupMenu->CheckMenuItem(ID_FILE_NEW,MF_CHECKED);
}

右击菜单

ON_WM_CONTEXTMENU()

void CMyFrameWnd::OnContextMenu(CWnd* pWnd, CPoint point)
{
	// TODO: Add your message handler code here
	//HMENU hPopup=::GetSubMenu(menu.m_hMenu, 0);
	//::TrackPopupMenu(hPopup, TPM_LEFTALIGN | TPM_TOPALIGN, point.x, point.y, 0, this->m_hWnd, NULL);
	CMenu* pPopup = menu.GetSubMenu(0);
	pPopup->TrackPopupMenu(TPM_LEFTALIGN | TPM_TOPALIGN, point.x, point.y, this);
}

Win32 Menu

Display Menu

• Windows class menu
• CreateWindow
• SetMenu

Windows class menu

#include "resource.h"
#include <windows.h>

HINSTANCE hinst;

LRESULT APIENTRY MainWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);

int APIENTRY WinMain(_In_ HINSTANCE hinstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPSTR lpCmdLine, _In_ int nCmdShow)
{
	MSG msg = { };  // message 
	WNDCLASS wc;    // windowclass data 
	HWND hwnd;      // handle to the main window 

	// Create the window class for the main window. Specify 
	// the identifier of the menu-template resource as the 
	// lpszMenuName member of the WNDCLASS structure to create 
	// the class menu. 

	wc.style = 0;
	wc.lpfnWndProc = (WNDPROC)MainWndProc;
	wc.cbClsExtra = 0;
	wc.cbWndExtra = 0;
	wc.hInstance = hinstance;
	wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
	wc.hCursor = LoadCursor(NULL, IDC_ARROW);
	//wc.hbrBackground = GetStockObject(WHITE_BRUSH);
	wc.hbrBackground = NULL;
	wc.lpszMenuName = MAKEINTRESOURCE(IDR_MENU1);
	wc.lpszClassName = TEXT("MainWClass");

	if (!RegisterClass(&wc))
		return FALSE;

	hinst = hinstance;

	// Create the main window. Set the hmenu parameter to NULL so 
	// that the system uses the class menu for the window. 

	hwnd = CreateWindow(TEXT("MainWClass"), TEXT("Sample Application"),
		WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT,
		CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hinstance,
		NULL);

	if (hwnd == NULL)
		return FALSE;

	// Make the window visible and send a WM_PAINT message to the 
	// window procedure. 

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

	// Start the main message loop. 

	while (GetMessage(&msg, NULL, 0, 0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return (int)msg.wParam;
	UNREFERENCED_PARAMETER(hPrevInstance);
}


LRESULT APIENTRY MainWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{

	switch (uMsg)
	{
		// Process other window messages. 

	case WM_COMMAND:

		// Test for the identifier of a command item. 

		switch (LOWORD(wParam))
		{
		case IDM_FI_OPEN:
			//DoFileOpen();   // application-defined 
			break;

		case IDM_FI_CLOSE:
			//DoFileClose();  // application-defined 
			break;
			// Process other menu commands. 

		default:
			break;

		}
		return 0;

		// Process other window messages. 
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hwnd, uMsg, wParam, lParam);
	}
	return NULL;
}