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C/C++ Source or Header  |  1990-11-12  |  3.3 KB  |  104 lines
  1. /*-------------------------------------------------
  2.    NOPOPUPS.C -- Demonstrates No-Popup Nested Menu
  3.                  (c) Charles Petzold, 1990
  4.   -------------------------------------------------*/
  5.  
  6. #include <windows.h>
  7. #include "nopopups.h"
  8.  
  9. long FAR PASCAL WndProc (HWND, WORD, WORD, LONG) ;
  10.  
  11. int PASCAL WinMain (HANDLE hInstance, HANDLE hPrevInstance,
  12.                     LPSTR lpszCmdLine, int nCmdShow)
  13.      {
  14.      static char szAppName [] = "NoPopUps" ;
  15.      HWND        hwnd ;
  16.      MSG         msg ;
  17.      WNDCLASS    wndclass ;
  18.  
  19.      if (!hPrevInstance) 
  20.           {
  21.           wndclass.style         = CS_HREDRAW | CS_VREDRAW ;
  22.           wndclass.lpfnWndProc   = WndProc ;
  23.           wndclass.cbClsExtra    = 0 ;
  24.           wndclass.cbWndExtra    = 0 ;
  25.           wndclass.hInstance     = hInstance ;
  26.           wndclass.hIcon         = LoadIcon (NULL, IDI_APPLICATION) ;
  27.           wndclass.hCursor       = LoadCursor (NULL, IDC_ARROW) ;
  28.           wndclass.hbrBackground = GetStockObject (WHITE_BRUSH) ;
  29.           wndclass.lpszMenuName  = NULL ;
  30.           wndclass.lpszClassName = szAppName ;
  31.  
  32.           RegisterClass (&wndclass) ;
  33.           }
  34.  
  35.      hwnd = CreateWindow (szAppName, "No-Popup Nested Menu Demonstration",
  36.                           WS_OVERLAPPEDWINDOW,
  37.                           CW_USEDEFAULT, CW_USEDEFAULT,
  38.                           CW_USEDEFAULT, CW_USEDEFAULT,
  39.                           NULL, NULL, hInstance, NULL) ;
  40.  
  41.      ShowWindow (hwnd, nCmdShow) ;
  42.      UpdateWindow (hwnd) ;
  43.  
  44.      while (GetMessage (&msg, NULL, 0, 0))
  45.           {
  46.           TranslateMessage (&msg) ;
  47.           DispatchMessage (&msg) ;
  48.           }
  49.      return msg.wParam ;
  50.      }
  51.  
  52. long FAR PASCAL WndProc (HWND hwnd, WORD message, WORD wParam, LONG lParam)
  53.      {
  54.      static HMENU hMenuMain, hMenuEdit, hMenuFile ;
  55.      HANDLE       hInstance ;
  56.  
  57.      switch (message)
  58.           {
  59.           case WM_CREATE:
  60.                hInstance = GetWindowWord (hwnd, GWW_HINSTANCE) ;
  61.  
  62.                hMenuMain = LoadMenu (hInstance, "MenuMain") ;
  63.                hMenuFile = LoadMenu (hInstance, "MenuFile") ;
  64.                hMenuEdit = LoadMenu (hInstance, "MenuEdit") ;
  65.  
  66.                SetMenu (hwnd, hMenuMain) ;
  67.                return 0 ;
  68.  
  69.           case WM_COMMAND:
  70.                switch (wParam)
  71.                     {
  72.                     case IDM_MAIN:
  73.                          SetMenu (hwnd, hMenuMain) ;
  74.                          return 0 ;
  75.  
  76.                     case IDM_FILE:
  77.                          SetMenu (hwnd, hMenuFile) ;
  78.                          return 0 ;
  79.  
  80.                     case IDM_EDIT:
  81.                          SetMenu (hwnd, hMenuEdit) ;
  82.                          return 0 ;
  83.  
  84.                     case IDM_NEW:
  85.                     case IDM_OPEN:
  86.                     case IDM_SAVE:
  87.                     case IDM_SAVEAS:
  88.                     case IDM_UNDO:
  89.                     case IDM_CUT:
  90.                     case IDM_COPY:
  91.                     case IDM_PASTE:
  92.                     case IDM_CLEAR:
  93.                          MessageBeep (0) ;
  94.                          return 0 ;
  95.                     }
  96.                break ;
  97.  
  98.           case WM_DESTROY:
  99.                PostQuitMessage (0) ;
  100.                return 0 ;
  101.           }
  102.      return DefWindowProc (hwnd, message, wParam, lParam) ;
  103.      }
  104.