学步园

#include <windows.h><br /> #include "resource.h"<br /> #define ID_TIMER 1<br /> TCHAR *szAppName = TEXT("ya~ha~");<br /> TCHAR Name[] = TEXT("Menu");<br /> HINSTANCE hInst;<br /> HMENU hMenu;<br /> LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam)<br /> {<br /> HDC hdc;<br /> PAINTSTRUCT ps;<br /> static int idColor[5] = {WHITE_BRUSH, LTGRAY_BRUSH, GRAY_BRUSH,<br /> DKGRAY_BRUSH, BLACK_BRUSH};<br /> static int iSelection = IDM_BKGND_WHITE;</p> <p> switch(message)<br /> {<br /> case WM_COMMAND:<br /> hMenu = GetMenu(hwnd);<br /> switch(LOWORD(wparam))<br /> {<br /> case IDM_FILE_NEW:<br /> case IDM_FILE_OPEN:<br /> case IDM_FILE_SAVE:<br /> case IDM_FILE_SAVE_AS:<br /> MessageBeep(0);<br /> break;<br /> case IDM_APP_EXIT:<br /> SendMessage(hwnd, WM_CLOSE, 0, 0);<br /> break;<br /> case IDM_EDIT_UNDO:<br /> case IDM_EDIT_CUT:<br /> case IDM_EDIT_COPY:<br /> case IDM_EDIT_PASTE:<br /> case IDM_EDIT_CLEAR:<br /> MessageBeep(0);<br /> break;<br /> case IDM_BKGND_WHITE: // Note: Logic below<br /> case IDM_BKGND_LTGRAY: // assumes that IDM_WHITE<br /> case IDM_BKGND_GRAY: // through IDM_BLACK are<br /> case IDM_BKGND_DKGRAY: // consecutive numbers in<br /> case IDM_BKGND_BLACK: // the order shown here.<br /> CheckMenuItem (hMenu, iSelection, MF_UNCHECKED);<br /> iSelection = LOWORD (wparam);<br /> CheckMenuItem (hMenu, iSelection, MF_CHECKED);</p> <p> SetClassLong(hwnd, GCL_HBRBACKGROUND,<br /> (LONG)GetStockObject(idColor[LOWORD(wparam) - IDM_BKGND_WHITE]));<br /> InvalidateRect (hwnd, NULL, TRUE);<br /> break;<br /> case IDM_TIMER_START:<br /> if (SetTimer(hwnd, ID_TIMER, 100, NULL))<br /> {<br /> EnableMenuItem(hMenu, IDM_TIMER_START, MF_GRAYED);<br /> EnableMenuItem(hMenu, IDM_TIMER_STOP, MF_ENABLED);<br /> }<br /> break;<br /> case IDM_TIMER_STOP:<br /> KillTimer (hwnd, ID_TIMER);<br /> EnableMenuItem (hMenu, IDM_TIMER_START, MF_ENABLED);<br /> EnableMenuItem (hMenu, IDM_TIMER_STOP, MF_GRAYED);<br /> break;<br /> case IDM_APP_HELP:<br /> MessageBox (hwnd, TEXT("Help not yet implemented!"),<br /> szAppName, MB_ICONEXCLAMATION|MB_OK);<br /> break;</p> <p> case IDM_APP_ABOUT:<br /> MessageBox (hwnd, TEXT("Menu Demonstration Program/n")<br /> TEXT("(c) Charles Petzold, 1998"),<br /> szAppName, MB_ICONINFORMATION|MB_OK);<br /> break;<br /> }<br /> return 0;<br /> case WM_TIMER:<br /> MessageBeep(0);<br /> return 0;<br /> case WM_PAINT:<br /> hdc = BeginPaint(hwnd, &ps);<br /> EndPaint(hwnd, &ps);<br /> return 0;<br /> case WM_DESTROY:<br /> PostQuitMessage(0);<br /> return 0;<br /> }<br /> return DefWindowProc(hwnd, message, wparam, lparam);<br /> }<br /> int WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hpreinstance, PSTR cmdline, int showcmd)<br /> {<br /> MSG msg;<br /> WNDCLASS wndclass;<br /> HWND hwnd;<br /> hInst = hinstance;<br /> if( (hMenu = LoadMenu(hinstance, MAKEINTRESOURCE(MENUDEMO))) == NULL )<br /> {<br /> MessageBox(0, TEXT("LoadMenu return NULL"), szAppName, MB_ICONERROR);<br /> }<br /> // hMenu = LoadMenu(hinstance, MAKEINTRESOURCE(MENUDEMO));<br /> wndclass.cbClsExtra = 0;<br /> wndclass.cbWndExtra = 0;<br /> wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);<br /> wndclass.hCursor = LoadCursor(0, IDC_ARROW);<br /> wndclass.hIcon = LoadIcon(0, IDI_APPLICATION);<br /> wndclass.hInstance = hinstance;<br /> wndclass.lpfnWndProc = WndProc;<br /> wndclass.lpszClassName = szAppName;<br /> wndclass.lpszMenuName = "MENUDEMO";<br /> wndclass.style = CS_HREDRAW|CS_VREDRAW;<br /> if(!RegisterClass(&wndclass))<br /> {<br /> MessageBox(0, TEXT("sth wrong~~"), szAppName, MB_ICONERROR);<br /> }<br /> hwnd = CreateWindow(szAppName, Name, WS_OVERLAPPEDWINDOW,<br /> CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,<br /> 0, hMenu,<br /> hinstance, 0);</p> <p> ShowWindow(hwnd, showcmd);<br /> UpdateWindow(hwnd);<br /> while(GetMessage(&msg, 0, 0, 0))<br /> {<br /> TranslateMessage(&msg);<br /> DispatchMessage(&msg);<br /> }<br /> return msg.wParam;<br /> }

《PROGRAMMING WINDOWS》例子， 谨记！

//感谢红色那个群的大大。。。