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- /*-----------------------------------------
- MENUDEMO.C -- Menu Demonstration
- (c) Charles Petzold, 1996
- -----------------------------------------*/
-
- #include <windows.h>
- #include "menudemo.h"
-
- LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
-
- char szAppName[] = "MenuDemo" ;
-
- int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
- PSTR szCmdLine, int iCmdShow)
- {
- HWND hwnd ;
- MSG msg ;
- WNDCLASSEX wndclass ;
-
- wndclass.cbSize = sizeof (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 ;
- wndclass.hIconSm = LoadIcon (NULL, IDI_APPLICATION) ;
-
- RegisterClassEx (&wndclass) ;
-
- hwnd = CreateWindow (szAppName, "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 iMsg, WPARAM wParam, LPARAM lParam)
- {
- static int iColorID[5] = { WHITE_BRUSH, LTGRAY_BRUSH, GRAY_BRUSH,
- DKGRAY_BRUSH, BLACK_BRUSH } ;
- static int iSelection = IDM_WHITE ;
- HMENU hMenu ;
-
- switch (iMsg)
- {
- case WM_COMMAND :
- hMenu = GetMenu (hwnd) ;
-
- switch (LOWORD (wParam))
- {
- case IDM_NEW :
- case IDM_OPEN :
- case IDM_SAVE :
- case IDM_SAVEAS :
- MessageBeep (0) ;
- return 0 ;
-
- case IDM_EXIT :
- SendMessage (hwnd, WM_CLOSE, 0, 0L) ;
- return 0 ;
-
- case IDM_UNDO :
- case IDM_CUT :
- case IDM_COPY :
- case IDM_PASTE :
- case IDM_DEL :
- MessageBeep (0) ;
- return 0 ;
-
- case IDM_WHITE : // Note: Logic below
- case IDM_LTGRAY : // assumes that IDM_WHITE
- case IDM_GRAY : // through IDM_BLACK are
- case IDM_DKGRAY : // consecutive numbers in
- case IDM_BLACK : // the order shown here.
-
- CheckMenuItem (hMenu, iSelection, MF_UNCHECKED) ;
- iSelection = LOWORD (wParam) ;
- CheckMenuItem (hMenu, iSelection, MF_CHECKED) ;
-
- SetClassLong (hwnd, GCL_HBRBACKGROUND,
- (LONG) GetStockObject
- (iColorID[LOWORD (wParam) - IDM_WHITE])) ;
-
- InvalidateRect (hwnd, NULL, TRUE) ;
- return 0 ;
-
- case IDM_START :
- if (SetTimer (hwnd, 1, 1000, NULL))
- {
- EnableMenuItem (hMenu, IDM_START, MF_GRAYED) ;
- EnableMenuItem (hMenu, IDM_STOP, MF_ENABLED) ;
- }
- return 0 ;
-
- case IDM_STOP :
- KillTimer (hwnd, 1) ;
- EnableMenuItem (hMenu, IDM_START, MF_ENABLED) ;
- EnableMenuItem (hMenu, IDM_STOP, MF_GRAYED) ;
- return 0 ;
-
- case IDM_HELP :
- MessageBox (hwnd, "Help not yet implemented!",
- szAppName, MB_ICONEXCLAMATION | MB_OK) ;
- return 0 ;
-
- case IDM_ABOUT :
- MessageBox (hwnd, "Menu Demonstration Program.",
- 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, iMsg, wParam, lParam) ;
- }
-