/**************************************************************************** PROGRAM: Generic.c PURPOSE: Generic template for Windows applications FUNCTIONS: WinMain() - calls initialization function, processes message loop InitApplication() - initializes window data and registers window InitInstance() - saves instance handle and creates main window MainWndProc() - processes messages About() - processes messages for "About" dialog box COMMENTS: Windows can have several copies of your application running at the same time. The variable hInst keeps track of which instance this application is so that processing will be to the correct window. ****************************************************************************/ #include "windows.h" /* required for all Windows applications */ #include "c_includ.h" #include "generic.h" /* specific to this program */ HANDLE hInst; /* current instance */ HDC hdc; LPSTR lpszCmdLine; char **_argv; /**************************************************************************** FUNCTION: WinMain(HANDLE, HANDLE, LPSTR, int) PURPOSE: calls initialization function, processes message loop COMMENTS: Windows recognizes this function by name as the initial entry point for the program. This function calls the application initialization routine, if no other instance of the program is running, and always calls the instance initialization routine. It then executes a message retrieval and dispatch loop that is the top-level control structure for the remainder of execution. The loop is terminated when a WM_QUIT message is received, at which time this function exits the application instance by returning the value passed by PostQuitMessage(). If this function must abort before entering the message loop, it returns the conventional value NULL. ****************************************************************************/ int PASCAL WinMain(hInstance, hPrevInstance, lpCmdLine, nCmdShow) HANDLE hInstance; /* current instance */ HANDLE hPrevInstance; /* previous instance */ LPSTR lpCmdLine; /* command line */ int nCmdShow; /* show-window type (open/icon) */ { MSG msg; /* message */ lpszCmdLine = lpCmdLine; if (!hPrevInstance) /* Other instances of app running? */ if (!InitApplication(hInstance)) /* Initialize shared things */ return (FALSE); /* Exits if unable to initialize */ /* Perform initializations that apply to a specific instance */ if (!InitInstance(hInstance, nCmdShow)) return (FALSE); /* Acquire and dispatch messages until a WM_QUIT message is received. */ while (GetMessage(&msg, /* message structure */ NULL, /* handle of window receiving the message */ NULL, /* lowest message to examine */ NULL)) /* highest message to examine */ { TranslateMessage(&msg); /* Translates virtual key codes */ DispatchMessage(&msg); /* Dispatches message to window */ } return (msg.wParam); /* Returns the value from PostQuitMessage */ } /**************************************************************************** FUNCTION: InitApplication(HANDLE) PURPOSE: Initializes window data and registers window class COMMENTS: This function is called at initialization time only if no other instances of the application are running. This function performs initialization tasks that can be done once for any number of running instances. In this case, we initialize a window class by filling out a data structure of type WNDCLASS and calling the Windows RegisterClass() function. Since all instances of this application use the same window class, we only need to do this when the first instance is initialized. ****************************************************************************/ BOOL InitApplication(hInstance) HANDLE hInstance; /* current instance */ { WNDCLASS wc; /* Fill in window class structure with parameters that describe the */ /* main window. */ wc.style = NULL; /* Class style(s). */ wc.lpfnWndProc = (WNDPROC)MainWndProc; /* Function to retrieve messages for */ /* windows of this class. */ wc.cbClsExtra = 0; /* No per-class extra data. */ wc.cbWndExtra = 0; /* No per-window extra data. */ wc.hInstance = hInstance; /* Application that owns the class. */ wc.hIcon = LoadIcon(hInstance, "TANK" ); wc.hCursor = LoadCursor(NULL, IDC_ARROW); wc.hbrBackground = GetStockObject(BLACK_BRUSH); wc.lpszMenuName = "GenericMenu"; /* Name of menu resource in .RC file. */ wc.lpszClassName = "GenericWClass"; /* Name used in call to CreateWindow. */ /* Register the window class and return success/failure code. */ return (RegisterClass(&wc)); } /**************************************************************************** FUNCTION: InitInstance(HANDLE, int) PURPOSE: Saves instance handle and creates main window COMMENTS: This function is called at initialization time for every instance of this application. This function performs initialization tasks that cannot be shared by multiple instances. In this case, we save the instance handle in a static variable and create and display the main program window. ****************************************************************************/ BOOL InitInstance(hInstance, nCmdShow) HANDLE hInstance; /* Current instance identifier. */ int nCmdShow; /* Param for first ShowWindow() call. */ { HWND hWnd; /* Main window handle. */ /* Save the instance handle in static variable, which will be used in */ /* many subsequence calls from this application to Windows. */ hInst = hInstance; /* Create a main window for this application instance. */ hWnd = CreateWindow( "GenericWClass", /* See RegisterClass() call. */ "Windows BattleZone", /* Text for window title bar. */ WS_OVERLAPPEDWINDOW, /* Window style. */ CW_USEDEFAULT, /* Default horizontal position. */ CW_USEDEFAULT, /* Default vertical position. */ CW_USEDEFAULT, /* Default width. */ CW_USEDEFAULT, /* Default height. */ NULL, /* Overlapped windows have no parent. */ NULL, /* Use the window class menu. */ hInstance, /* This instance owns this window. */ NULL /* Pointer not needed. */ ); /* If window could not be created, return "failure" */ if (!hWnd) return (FALSE); /* Make the window visible; update its client area; and return "success" */ ShowWindow(hWnd, nCmdShow); /* Show the window */ UpdateWindow(hWnd); /* Sends WM_PAINT message */ return (TRUE); /* Returns the value from PostQuitMessage */ } /**************************************************************************** FUNCTION: MainWndProc(HWND, unsigned, WORD, LONG) PURPOSE: Processes messages MESSAGES: WM_COMMAND - application menu (About dialog box) WM_DESTROY - destroy window COMMENTS: To process the IDM_ABOUT message, call MakeProcInstance() to get the current instance address of the About() function. Then call Dialog box which will create the box according to the information in your generic.rc file and turn control over to the About() function. When it returns, free the intance address. ****************************************************************************/ long FAR PASCAL MainWndProc(hWnd, message, wParam, lParam) HWND hWnd; /* window handle */ unsigned message; /* type of message */ UINT wParam; /* additional information */ LONG lParam; /* additional information */ { FARPROC lpProcAbout; /* pointer to the "About" function */ MSG msg; RECT rect; switch (message) { case WM_CREATE: hdc = GetDC( hWnd ); SetMapMode( hdc, MM_ISOTROPIC ); break; case WM_SIZE: GetClientRect( hWnd, &rect ); SetWindowExtEx( hdc, 1000, 700, NULL ); SetViewportExtEx( hdc, LOWORD(lParam), HIWORD(lParam), NULL ); break; case WM_COMMAND: /* message: command from application menu */ switch( wParam ) { case IDM_ORIGINAL: opt->original = True; opt->copters = False; opt->mmissiles = 1; opt->msalvos = 1; MessageBeep( -1 ); cbzone_main( 0, NULL ); MessageBeep( -1 ); do { } while( PeekMessage( &msg, NULL, 0, 0, PM_REMOVE )); InvalidateRect( hWnd, NULL, TRUE ); PostMessage( hWnd, WM_DESTROY, 0, 0 ); break; case IDM_COPT2: opt->original = False; opt->mmissiles = 1; opt->msalvos = 10; MessageBeep( -1 ); cbzone_main( 0, NULL ); MessageBeep( -1 ); do { } while( PeekMessage( &msg, NULL, 0, 0, PM_REMOVE )); InvalidateRect( hWnd, NULL, TRUE ); PostMessage( hWnd, WM_DESTROY, 0, 0 ); break; case IDM_TANKCOPT: opt->copters = True; opt->mmissiles = 1; opt->msalvos = 3; MessageBeep( -1 ); cbzone_main( 0, NULL ); MessageBeep( -1 ); do { } while( PeekMessage( &msg, NULL, 0, 0, PM_REMOVE )); InvalidateRect( hWnd, NULL, TRUE ); PostMessage( hWnd, WM_DESTROY, 0, 0 ); break; case IDM_ABOUT: lpProcAbout = MakeProcInstance((FARPROC)About, hInst); DialogBox(hInst, /* current instance */ "AboutBox", /* resource to use */ hWnd, /* parent handle */ (WNDPROC)lpProcAbout); /* About() instance address */ FreeProcInstance(lpProcAbout); break; default: return (DefWindowProc(hWnd, message, wParam, lParam)); } return 0; break; case WM_DESTROY: /* message: window being destroyed */ ReleaseDC( hWnd, hdc ); PostQuitMessage(0); break; default: /* Passes it on if unproccessed */ return (DefWindowProc(hWnd, message, wParam, lParam)); } return (NULL); } /**************************************************************************** FUNCTION: About(HWND, unsigned, WORD, LONG) PURPOSE: Processes messages for "About" dialog box MESSAGES: WM_INITDIALOG - initialize dialog box WM_COMMAND - Input received COMMENTS: No initialization is needed for this particular dialog box, but TRUE must be returned to Windows. Wait for user to click on "Ok" button, then close the dialog box. ****************************************************************************/ BOOL FAR PASCAL About(hDlg, message, wParam, lParam) HWND hDlg; /* window handle of the dialog box */ unsigned message; /* type of message */ UINT wParam; /* message-specific information */ LONG lParam; { switch (message) { case WM_INITDIALOG: /* message: initialize dialog box */ return (TRUE); case WM_COMMAND: /* message: received a command */ if (LOWORD(wParam) == IDOK /* "OK" box selected? */ || LOWORD(wParam) == IDCANCEL) { /* System menu close command? */ EndDialog(hDlg, TRUE); /* Exits the dialog box */ return (TRUE); } break; } return (FALSE); /* Didn't process a message */ }