windows WIN32菜单
/*-----------------------------------------MENUDEMO.C -- Menu Demonstration
(c) Charles Petzold, 1998
-----------------------------------------*/
#include <windows.h>
#include "resource.h"
#define ID_TIMER 1
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
TCHAR szAppName[] = TEXT ("MenuDemo") ;
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= szAppName ;
wndclass.lpszClassName = szAppName ;
if (!RegisterClass (&wndclass))
{
MessageBox (NULL, TEXT ("This program requires Windows NT!"),
szAppName, MB_ICONERROR) ;
return 0 ;
}
hwnd = CreateWindow (szAppName, TEXT ("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 = { WHITE_BRUSH,LTGRAY_BRUSH, GRAY_BRUSH,
DKGRAY_BRUSH, BLACK_BRUSH } ;
static int iSelection = IDM_BKGND_WHITE ;
HMENU hMenu ;
switch (message)
{
case WM_COMMAND:
hMenu = GetMenu (hwnd) ;
switch (LOWORD (wParam))
{
case IDM_FILE_NEW:
case IDM_FILE_OPEN:
case IDM_FILE_SAVE:
case IDM_FILE_SAVE_AS:
MessageBeep (0) ;
return 0 ;
case IDM_APP_EXIT:
SendMessage (hwnd, WM_CLOSE, 0, 0) ;
return 0 ;
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: // Note: Logic below
case IDM_BKGND_LTGRAY: // assumes that IDM_WHITE
case IDM_BKGND_GRAY: // through IDM_BLACK are
case IDM_BKGND_DKGRAY: // consecutive numbers in
case IDM_BKGND_BLACK: // the order shown here.
CheckMenuItem (hMenu, iSelection, MF_UNCHECKED) ;
iSelection = LOWORD (wParam) ;
CheckMenuItem (hMenu, iSelection, MF_CHECKED) ;
SetClassLong (hwnd, GCL_HBRBACKGROUND, (LONG)
GetStockObject
(idColor )) ;
InvalidateRect (hwnd, NULL, TRUE) ;
return 0 ;
case IDM_TIMER_START:
if (SetTimer (hwnd, ID_TIMER, 1000, NULL))
{
EnableMenuItem (hMenu, IDM_TIMER_START, MF_GRAYED) ;
EnableMenuItem (hMenu, IDM_TIMER_STOP,MF_ENABLED) ;
}
return 0 ;
case IDM_TIMER_STOP:
KillTimer (hwnd, ID_TIMER) ;
EnableMenuItem (hMenu, IDM_TIMER_START, MF_ENABLED) ;
EnableMenuItem (hMenu, IDM_TIMER_STOP,MF_GRAYED) ;
return 0 ;
case IDM_APP_HELP:
MessageBox (hwnd, TEXT ("Help not yet implemented!"),
szAppName, MB_ICONEXCLAMATION | MB_OK) ;
return 0 ;
case IDM_APP_ABOUT:
MessageBox (hwnd, TEXT ("Menu Demonstration Program\n")
TEXT ("(c) Charles Petzold, 1998"),
szAppName, MB_ICONINFORMATION | MB_OK) ;
return 0 ;
}
break ;
case WM_TIMER:
MessageBeep (0) ;
return 0 ;
case WM_DESTROY:
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
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