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- /*
- * Name: allocres.c
- * Function (s) demonstrated : AllocResource (), FindResource (),
- * SizeofResource (), AccessResource ().
- * Windows version : 2.03
- * Compiler version : 5.1
- * Description :
- * FindResource is used first to locate and identify the resource
- * item. SizeofResource is used to determine how many bytes need
- * to be read to obtain the resource item, AllocResource () is used
- * to allocate memory for the resource, and finally AccessResource ()
- * allows us to read the resource in directly.
- *
- */
-
- #include <windows.h>
- #include "AllocRes.h"
-
- long FAR PASCAL WndProc (HWND, unsigned, WORD, LONG);
- int FAR PASCAL _lclose (int);
- int FAR PASCAL _lread (HANDLE, LPSTR, short);
-
- static char szBuffer[8];
- static int ErrorCheck;
- static char szResName [] = "HotStuff";
-
- int PASCAL WinMain (hInstance, hPrevInstance, lpszCmdLine, nCmdShow)
- HANDLE hInstance, hPrevInstance;
- LPSTR lpszCmdLine;
- int nCmdShow;
- {
- static char szAppName [] = "Resources";
- HWND hWnd;
- WNDCLASS wndclass;
- MSG msg;
-
- if (!hPrevInstance)
- {
- 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 = GetStockObject (WHITE_BRUSH);
- wndclass.lpszMenuName = NULL;
- wndclass.lpszClassName = szAppName;
-
- if (!RegisterClass (&wndclass))
- return FALSE;
- }
-
- hWnd = CreateWindow (szAppName, "The Joy of Resources",
- WS_OVERLAPPEDWINDOW,
- CW_USEDEFAULT, 0,
- CW_USEDEFAULT, 0,
- NULL, NULL, hInstance, NULL);
-
- ShowWindow (hWnd, nCmdShow);
- UpdateWindow (hWnd);
-
- while (GetMessage (&msg, NULL, 0, 0))
- {
- TranslateMessage (&msg);
- DispatchMessage (&msg);
- }
- return (msg.wParam);
- }
-
- long FAR PASCAL WndProc (hWnd, iMessage, wParam, lParam)
- HWND hWnd;
- unsigned iMessage;
- WORD wParam;
- LONG lParam;
- {
- static HANDLE hInstance, hResource, hGlobRes;
- int hFile;
- char far *szStuff, szSuccess[20];
- short sRes;
- HMENU hMenu;
-
- switch (iMessage)
- {
- case WM_CREATE:
- hInstance = GetWindowWord (hWnd, GWW_HINSTANCE);
- hMenu = LoadMenu (hInstance, "ResMenu");
- SetMenu (hWnd, hMenu);
- DrawMenuBar (hWnd);
- break;
- case WM_COMMAND:
- switch (wParam)
- {
- case IDM_EXECUTE:
- /* FindResource is used first to locate and identify the resource
- * item. SizeofResource is used to determine how many bytes need
- * to be read to obtain the resource item, AllocResource () reserves
- * the memory to store the resource and AccessResource () permits
- * reading of the resource.
- */
- hResource = FindResource (hInstance, "HotStuff", RT_RCDATA);
- sRes = SizeofResource (hInstance, hResource);
- hGlobRes = AllocResource (hInstance, hResource, (DWORD)sRes);
- ErrorCheck = sprintf (szStuff, "%i", hGlobRes);
- MessageBox (GetFocus (), szStuff, "hGlobRes returns...", MB_OK);
- szStuff = GlobalLock (hGlobRes);
- hFile = AccessResource (hInstance, hResource);
- ErrorCheck = _lread (hFile, (LPSTR)szStuff, sRes);
- ErrorCheck = GlobalUnlock (hGlobRes);
- hGlobRes = GlobalFree (hGlobRes);
- ErrorCheck = _lclose (hFile);
- if (hFile < 1)
- {
- ErrorCheck = sprintf (szStuff, "It failed");
- ErrorCheck = sprintf (szSuccess, "Error");
- }
- else
- ErrorCheck = sprintf (szSuccess, "Item read");
- MessageBox (GetFocus (), szStuff, szSuccess, MB_OK);
- break;
-
- default:
- return DefWindowProc (hWnd, iMessage, wParam, lParam);
- }
-
- case WM_DESTROY:
- PostQuitMessage (0);
- break;
-
- default:
- return DefWindowProc (hWnd, iMessage, wParam, lParam);
- }
- return (0L);
- }
-