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Microsoft Programmer's Library 1.3
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Microsoft-Programers-Library-v1.3.iso
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win_lrn
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menu
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demenu.c
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C/C++ Source or Header
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1988-08-10
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3KB
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119 lines
/* Function Name: DestroyMenu
*
* Description:
* The program below will create a menu. When the menuitem is selected,
* that menu will be destroyed and a new menu will be created.
*
* Windows Version 2.0 function demonstration application
*
*/
#include "windows.h"
long FAR PASCAL WndProc (HWND, unsigned, WORD, LONG);
HMENU hMenu;
int PASCAL WinMain (hInstance, hPrevInstance, lpszCmdLine, cmdShow)
HANDLE hInstance, hPrevInstance;
LPSTR lpszCmdLine;
int cmdShow;
{
MSG msg;
HWND hWnd;
if (!hPrevInstance)
{
WNDCLASS wcClass;
wcClass.style = CS_HREDRAW | CS_VREDRAW;
wcClass.lpfnWndProc = WndProc;
wcClass.cbClsExtra = 0;
wcClass.cbWndExtra = 0;
wcClass.hInstance = hInstance;
wcClass.hIcon = LoadIcon (hInstance, NULL);
wcClass.hCursor = LoadCursor (NULL, IDC_ARROW);
wcClass.hbrBackground = (HBRUSH)GetStockObject (WHITE_BRUSH);
wcClass.lpszMenuName = (LPSTR)NULL;
wcClass.lpszClassName = (LPSTR)"DestroyMenu";
if (!RegisterClass ( (LPWNDCLASS) & wcClass))
return FALSE;
}
hMenu = CreateMenu ();
ChangeMenu (hMenu, NULL, "Add MenuItem", 100, MF_APPEND);
hWnd = CreateWindow ( (LPSTR)"DestroyMenu",
(LPSTR)"DestroyMenu ()",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
(HWND)NULL, /* no parent */
(HMENU)hMenu, /* use class menu */
(HANDLE)hInstance, /* handle to window instance */
(LPSTR)NULL); /* no params to pass on */
ShowWindow (hWnd, cmdShow);
UpdateWindow (hWnd);
while (GetMessage ( (LPMSG) & msg, NULL, 0, 0))
{
TranslateMessage ( (LPMSG) & msg);
DispatchMessage ( (LPMSG) & msg);
}
return (int)msg.wParam;
}
/* Procedures which make up the window class. */
long FAR PASCAL WndProc (hWnd, message, wParam, lParam)
HWND hWnd;
unsigned message;
WORD wParam;
LONG lParam;
{
switch (message)
{
case WM_DESTROY:
PostQuitMessage (0);
break;
case WM_COMMAND:
switch (wParam)
{
case 100:
SetMenu (hWnd, NULL); /* No Menu for the Window while we play */
DestroyMenu (hMenu); /* Trash the Menu */
hMenu = CreateMenu (); /* Create a new one */
ChangeMenu (hMenu, NULL, "Delete Extra MenuItem ", 105, MF_APPEND);
ChangeMenu (hMenu, NULL, " Extra MenuItem", 110, MF_APPEND);
SetMenu (hWnd, hMenu); /* Change the menu for the window */
break;
case 105:
SetMenu (hWnd, NULL);
DestroyMenu (hMenu);
hMenu = CreateMenu ();
ChangeMenu (hMenu, NULL, "Add MenuItem", 100, MF_APPEND);
SetMenu (hWnd, hMenu);
break;
case 110:
MessageBox (GetFocus(), "Extra MenuItem Was Selected",
"Extra MenuItem", MB_OK | MB_ICONEXCLAMATION);
break;
default:
return DefWindowProc (hWnd, message, wParam, lParam);
}
break;
default:
return DefWindowProc (hWnd, message, wParam, lParam);
break;
}
return (0L);
}