鼠标右键弹出菜单

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

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

HINSTANCE    hInst;
TCHAR szAppName[] = TEXT("PopMenu");

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow) 
{
    HWND             hwnd; 
    MSG              msg; 
    WNDCLASS         wndclass;

    wndclass.style          = CS_HREDRAW | CS_VREDRAW;
    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   = NULL;
    wndclass.lpszClassName  = szAppName;

    if(!RegisterClass(&wndclass)) {
        MessageBox(NULL, TEXT("This program requires Windows NT !"), szAppName, MB_ICONERROR);
        return 0;
    }

    hInst = hInstance;
    hwnd = CreateWindow(szAppName, TEXT("Popup Menu Demonstration"),
                        WS_OVERLAPPEDWINDOW,
                        CW_USEDEFAULT, CW_USEDEFAULT,
                        CW_USEDEFAULT, CW_USEDEFAULT,
                        NULL, NULL, hInstance, NULL);

    ShowWindow(hwnd, iCmdShow);
    UpdateWindow(hwnd);

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

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) 
{
    static int        idColor[5] = {WHITE_BRUSH, LTGRAY_BRUSH, GRAY_BRUSH,
                                DKGRAY_BRUSH, BLACK_BRUSH};
    static int        iSelection = IDM_BKGND_WHITE;
    static HMENU      hMenu;
    POINT             point;

    switch(message) 
    {
    case WM_CREATE:
        hMenu = LoadMenu(hInst, szAppName);
        hMenu = GetSubMenu(hMenu, 0);
        return 0;
        
    case WM_RBUTTONUP:
        point.x = LOWORD(lParam);
        point.y = HIWORD(lParam);
        ClientToScreen(hwnd, &point);
        TrackPopupMenu(hMenu, TPM_RIGHTBUTTON, point.x, point.y,
                        0, hwnd, NULL);
        return 0;

    case WM_COMMAND:
        switch(LOWORD(wParam))
        {
        case IDM_FILE_NEW:
        case IDM_FILE_OPEN:
        case IDM_FILE_SAVE:
        case IDM_FILE_SAVE_AS:
        case IDM_EDIT_UNDO:
        case IDM_EDIT_CUT:
        case IDM_EDIT_COPY:
        case IDM_EDIT_PASTE:
        case IDM_EDIT_CLEAR:
            MessageBeep(0);
            return 0;

        case IDM_BKGND_WHITE:
        case IDM_BKGND_LTGRAY:
        case IDM_BKGND_GRAY:
        case IDM_BKGND_DKGRAY:
        case IDM_BKGND_BLACK:
            CheckMenuItem(hMenu, iSelection, MF_UNCHECKED);
            iSelection = LOWORD(wParam);
            CheckMenuItem(hMenu, iSelection, MF_CHECKED);

            SetClassLong(hwnd, GCL_HBRBACKGROUND, (LONG)
                GetStockObject(idColor[LOWORD(wParam)-IDM_BKGND_WHITE]));
            InvalidateRect(hwnd, NULL, TRUE);
            return 0;

        case IDM_APP_ABOUT:
            MessageBox(hwnd, TEXT("Popup Menu Demonstration Program\n")
                             TEXT("(c) Charles Petzold, 1998"),
                        szAppName, MB_ICONINFORMATION | MB_OK);
            return 0;

        case IDM_APP_EXIT:
            SendMessage(hwnd, WM_CLOSE, 0, 0);
            return 0;

        case IDM_APP_HELP:
            MessageBox(hwnd, TEXT("Help not yet implemented!"),
                        szAppName, MB_ICONEXCLAMATION | MB_OK);
            return 0;
        }
        break;
    
    case WM_DESTROY: 
        PostQuitMessage(0);
        return 0;            
    }
    return DefWindowProc(hwnd, message, wParam, lParam);
}

//Microsoft Developer Studio generated resource script.
#include "resource.h"
#include "afxres.h"

/////////////////////////////////////////////////////////////////////////////
// Menu
PopMenu MENU DISCARDABLE 
BEGIN
    POPUP "MyMenu"
    BEGIN
        POPUP "&File"
        BEGIN
            MENUITEM "&New",                        IDM_FILE_NEW
            MENUITEM "&Open",                       IDM_FILE_OPEN
            MENUITEM "&Save",                       IDM_FILE_SAVE
            MENUITEM "Save &As",                    IDM_FILE_SAVE_AS
            MENUITEM SEPARATOR
            MENUITEM "E&xit",                       IDM_APP_EXIT
        END
        POPUP "&Edit"
        BEGIN
            MENUITEM "&Undo",                       IDM_EDIT_UNDO
            MENUITEM SEPARATOR
            MENUITEM "Cu&t",                        IDM_EDIT_CUT
            MENUITEM "&Copy",                       IDM_EDIT_COPY
            MENUITEM "&Paste",                      IDM_EDIT_PASTE
            MENUITEM "De&lete",                     IDM_EDIT_CLEAR
        END
        POPUP "&Background"
        BEGIN
            MENUITEM "&White",                      IDM_BKGND_WHITE, CHECKED
            MENUITEM "&Light Gray",                 IDM_BKGND_LTGRAY
            MENUITEM "&Gray",                       IDM_BKGND_GRAY
            MENUITEM "&Dark Gray",                  IDM_BKGND_DKGRAY
            MENUITEM "&Black",                      IDM_BKGND_BLACK
        END
        POPUP "&Help"
        BEGIN
            MENUITEM "&Help...",                    IDM_APP_HELP
            MENUITEM "&About PopMenu...",           IDM_APP_ABOUT
        END
    END
END

// Microsoft Developer Studio generated include file.
// Used by popMenu.rc

#define IDM_FILE_NEW                    40001
#define IDM_FILE_OPEN                   40002
#define IDM_FILE_SAVE                   40003
#define IDM_FILE_SAVE_AS                40004
#define IDM_APP_EXIT                    40005
#define IDM_EDIT_UNDO                   40007
#define IDM_EDIT_CUT                    40008
#define IDM_EDIT_COPY                   40009
#define IDM_EDIT_PASTE                  40010
#define IDM_EDIT_CLEAR                  40011
#define IDM_BKGND_WHITE                 40013
#define IDM_BKGND_LTGRAY                40014
#define IDM_BKGND_GRAY                  40015
#define IDM_BKGND_DKGRAY                40016
#define IDM_BKGND_BLACK                 40017
#define IDM_APP_HELP                    40019
#define IDM_APP_ABOUT                   40020