globals.h File Reference

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Macros
#define	APPNAME   _T("MATRIX ScreenSaver 2.0")
#define	DENSITY   24
#define	DENSITY_MAX   50
#define	DENSITY_MIN   5
#define	MAX_INTENSITY   5
#define	NUM_GLYPHS   26
#define	GLYPH_WIDTH   14
#define	GLYPH_HEIGHT   14
#define	SPEED_MAX   10
#define	SPEED_MIN   1
#define	MAXMSG_WIDTH   0x100
#define	MAXMSG_HEIGHT   0x100
#define	MAXMSG_LENGTH   64
#define	MSGSPEED_MAX   500
#define	MSGSPEED_MIN   50
#define	MAX_MESSAGES   16
#define	FONT_MIN   8
#define	FONT_MAX   30

Functions
void	LoadSettings ()
void	SaveSettings ()
BOOL	ChangePassword (HWND hwnd)
BOOL	VerifyPassword (HWND hwnd)
BOOL	Configure (HWND hwndParent)
BOOL	ScreenSaver (HWND hwndParent)
int	crc_rand ()

Variables
TCHAR	g_szMessages [MAX_MESSAGES][MAXMSG_LENGTH]
int	g_nFontSize
TCHAR	g_szFontName []
BOOL	g_fFontBold
int	g_nNumMessages
int	g_nCurrentMessage
int	g_nMessageSpeed
int	g_nMatrixSpeed
int	g_nDensity
BOOL	g_fRandomizeMessages
HFONT	g_hFont
BOOL	g_fScreenSaving

Macro Definition Documentation

APPNAME

#define APPNAME   _T("MATRIX ScreenSaver 2.0")

Definition at line 8 of file globals.h.

DENSITY

#define DENSITY   24

Definition at line 10 of file globals.h.

DENSITY_MAX

#define DENSITY_MAX   50

Definition at line 11 of file globals.h.

DENSITY_MIN

#define DENSITY_MIN   5

Definition at line 12 of file globals.h.

FONT_MAX

#define FONT_MAX   30

Definition at line 33 of file globals.h.

FONT_MIN

#define FONT_MIN   8

Definition at line 32 of file globals.h.

GLYPH_HEIGHT

#define GLYPH_HEIGHT   14

Definition at line 18 of file globals.h.

GLYPH_WIDTH

#define GLYPH_WIDTH   14

Definition at line 17 of file globals.h.

MAX_INTENSITY

#define MAX_INTENSITY   5

Definition at line 15 of file globals.h.

MAX_MESSAGES

#define MAX_MESSAGES   16

Definition at line 30 of file globals.h.

MAXMSG_HEIGHT

#define MAXMSG_HEIGHT   0x100

Definition at line 24 of file globals.h.

MAXMSG_LENGTH

#define MAXMSG_LENGTH   64

Definition at line 25 of file globals.h.

MAXMSG_WIDTH

#define MAXMSG_WIDTH   0x100

Definition at line 23 of file globals.h.

MSGSPEED_MAX

#define MSGSPEED_MAX   500

Definition at line 27 of file globals.h.

MSGSPEED_MIN

#define MSGSPEED_MIN   50

Definition at line 28 of file globals.h.

NUM_GLYPHS

#define NUM_GLYPHS   26

Definition at line 16 of file globals.h.

SPEED_MAX

#define SPEED_MAX   10

Definition at line 20 of file globals.h.

SPEED_MIN

#define SPEED_MIN   1

Definition at line 21 of file globals.h.

Function Documentation

ChangePassword()

BOOL ChangePassword

(

HWND

hwnd

)

Definition at line 48 of file password.c.

{
    // This only ever gets called under '95, when started with the /a option.
    HINSTANCE hmpr = LoadLibrary(_T("MPR.DLL"));
    PWDCHANGEPASSWORD PwdChangePassword;
 
    if(hmpr == NULL)
        return FALSE;
 
    PwdChangePassword = (PWDCHANGEPASSWORD)GetProcAddress(hmpr, "PwdChangePasswordA");
 
    if(PwdChangePassword == NULL)
    {
        FreeLibrary(hmpr);
        return FALSE;
    }
 
    PwdChangePassword(_T("SCRSAVE"), hwnd, 0, 0);
    FreeLibrary(hmpr);
 
    return TRUE;
}

Referenced by wWinMain().

Configure()

BOOL Configure

(

HWND

hwndParent

)

Definition at line 291 of file config.c.

{
    INITCOMMONCONTROLSEX icc;
 
    icc.dwICC  = ICC_UPDOWN_CLASS | ICC_BAR_CLASSES;
    icc.dwSize = sizeof(icc);
 
    InitCommonControlsEx(&icc);
 
#ifdef _DEBUG
    if(hwndParent == NULL)
        hwndParent = 0;
#else
    if(hwndParent == NULL)
        hwndParent = GetForegroundWindow();
#endif
 
    DialogBox(GetModuleHandle(0), MAKEINTRESOURCE(IDD_CONFIG), hwndParent, ConfigDlgProc);
 
    return 0;
}

crc_rand()

int crc_rand

(

)

Definition at line 18 of file matrix.c.

{
    const  WORD mask = 0xb400;
 
    if(_crc_reg & 1)
        _crc_reg = (_crc_reg >> 1) ^ mask;
    else
        _crc_reg = (_crc_reg >> 1);
 
    return _crc_reg;
}

Referenced by CreateMatrix(), DoMatrixMessage(), InitMatrixMessage(), RandomGlyph(), RandomMatrixColumn(), and ScrollMatrixColumn().

LoadSettings()

void LoadSettings

(

)

Definition at line 53 of file settings.c.

{
    HKEY hKey = NULL;
    int iItemIndex = -1;
 
    if (RegOpenKeyEx(HKEY_CURRENT_USER, g_szGeneralRegKey, 0, KEY_READ, &hKey) == ERROR_SUCCESS)
    {
        TCHAR szBuffer[MAX_PATH];
        DWORD dwAdvancedChecked;
        DWORD type, size = sizeof(dwAdvancedChecked);
        LSTATUS lstatus;
 
        /* Restore last selected font */
        if (QueryStringValue(HKEY_CURRENT_USER, g_szGeneralRegKey, _T("Font"), szBuffer, (sizeof(szBuffer)/sizeof(szBuffer[0]))) == ERROR_SUCCESS)
        {
            //Get combobox handle
            hWnd = GetDlgItem(hCharmapDlg, IDC_FONTCOMBO);
 
            //Search for match and return index if match found
            iItemIndex = ComboBox_FindStringExact(hWnd, -1, szBuffer);
            if(iItemIndex != CB_ERR)
            {
                ComboBox_SetCurSel(hWnd, iItemIndex);
                ChangeMapFont(hCharmapDlg);
            }
        }
 
        /* Restore last selected character set */
        if (QueryStringValue(HKEY_CURRENT_USER, g_szGeneralRegKey, _T("CodePage"), szBuffer, (sizeof(szBuffer)/sizeof(szBuffer[0]))) == ERROR_SUCCESS)
        {
            //Get combobox handle
            hWnd = GetDlgItem(hCharmapDlg, IDC_COMBO_CHARSET);
 
            iItemIndex = ComboBox_FindStringExact(hWnd, -1, szBuffer);
            if(iItemIndex != CB_ERR)
            {
                ComboBox_SetCurSel(hWnd, iItemIndex);
            }
        }
 
        lstatus = RegQueryValueEx(hKey, _T("Advanced"), NULL, &type, (LPBYTE)&dwAdvancedChecked, &size);
        if (lstatus == ERROR_SUCCESS && type == REG_DWORD && dwAdvancedChecked != FALSE)
        {
            SendDlgItemMessage(hCharmapDlg, IDC_CHECK_ADVANCED, BM_CLICK, 0, 0);
        }
 
    RegCloseKey(hKey);
    }
    else
    {
        /* Default font seems to be Arial */
        hWnd = GetDlgItem(hCharmapDlg, IDC_FONTCOMBO);
 
        iItemIndex = ComboBox_FindStringExact(hWnd, -1, _T("Arial"));
        if(iItemIndex != CB_ERR)
        {
            ComboBox_SetCurSel(hWnd, iItemIndex);
            ChangeMapFont(hCharmapDlg);
        }
    }
}

SaveSettings()

void SaveSettings

(

)

Definition at line 115 of file settings.c.

{
    HKEY hKey = NULL;
 
    if (RegCreateKeyEx(HKEY_CURRENT_USER, g_szGeneralRegKey, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_SET_VALUE, NULL, &hKey, NULL) == ERROR_SUCCESS)
    {
        TCHAR szBuffer[MAX_PATH];
 
        hWnd = GetDlgItem(hCharmapDlg, IDC_FONTCOMBO);
        ComboBox_GetText(hWnd, szBuffer, MAX_PATH);
 
        if(*szBuffer != '\0')
            RegSetValueEx(hKey, _T("Font"), 0, REG_SZ, (LPBYTE) szBuffer, (DWORD) MAX_PATH);
 
        hWnd = GetDlgItem(hCharmapDlg, IDC_COMBO_CHARSET);
        ComboBox_GetText(hWnd, szBuffer, MAX_PATH);
 
        if(*szBuffer != '\0')
            RegSetValueEx(hKey, _T("CodePage"), 0, REG_SZ, (LPBYTE) szBuffer, (DWORD) MAX_PATH);
 
        RegSetValueEx(hKey, _T("Advanced"), 0, REG_DWORD, (LPBYTE)&Settings.IsAdvancedView, (DWORD) sizeof(DWORD));
 
        RegCloseKey(hKey);
    }
}

ScreenSaver()

BOOL ScreenSaver

(

HWND

hwndParent

)

Definition at line 51 of file screensave.c.

{
    HMODULE     hUser32;
    UINT        nPreviousState;
    MSG         msg;
 
    InitScreenSaveClass(hwndParent);
 
    SystemParametersInfo(SPI_SETSCREENSAVERRUNNING, TRUE, &nPreviousState, 0);
 
    // Dynamically locate API call from USER32 - not present in all versions
    hUser32                 = GetModuleHandle(_T("USER32.DLL"));
    pfnEnumDisplayMonitors  = (PVOID)GetProcAddress(hUser32, "EnumDisplayMonitors");
 
    // If we're running Win2k+ then the API is available...so call it!
    if(pfnEnumDisplayMonitors && hwndParent == 0)
    {
        pfnEnumDisplayMonitors(NULL, NULL, MonitorEnumProc, 0);
    }
    // Otherwise simulate by calling enum-proc manually
    else
    {
        RECT rect;
 
        rect.left   = 0;
        rect.right  = GetSystemMetrics(SM_CXSCREEN);
        rect.top    = 0;
        rect.bottom = GetSystemMetrics(SM_CYSCREEN);
 
        MonitorEnumProc(NULL, NULL, &rect, (LPARAM)hwndParent);
    }
 
    // run message loop to handle all screen-saver windows
    while(GetMessage(&msg, NULL,0,0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
 
    SystemParametersInfo(SPI_SETSCREENSAVERRUNNING, FALSE, &nPreviousState, 0);
 
    return TRUE;
}

Referenced by wWinMain().

VerifyPassword()

BOOL VerifyPassword

(

HWND

hwnd

)

Definition at line 12 of file password.c.

{
    // Under NT, we return TRUE immediately. This lets the saver quit,
    // and the system manages passwords. Under '95, we call VerifyScreenSavePwd.
    // This checks the appropriate registry key and, if necessary,
    // pops up a verify dialog
 
    HINSTANCE           hpwdcpl;
    VERIFYSCREENSAVEPWD VerifyScreenSavePwd;
    BOOL                fResult;
 
    if(GetVersion() < 0x80000000)
        return TRUE;
 
    hpwdcpl = LoadLibrary(_T("PASSWORD.CPL"));
 
    if(hpwdcpl == NULL)
    {
        return FALSE;
    }
 
 
    VerifyScreenSavePwd = (VERIFYSCREENSAVEPWD)GetProcAddress(hpwdcpl, "VerifyScreenSavePwd");
 
    if(VerifyScreenSavePwd == NULL)
    {
        FreeLibrary(hpwdcpl);
        return FALSE;
    }
 
    fResult = VerifyScreenSavePwd(hwnd);
    FreeLibrary(hpwdcpl);
 
    return fResult;
}

Referenced by MatrixWndProc().

Variable Documentation

g_fFontBold

BOOL g_fFontBold

extern

Definition at line 22 of file settings.c.

Referenced by ConfigDlgProc(), InitMatrixMessage(), LoadSettings(), SaveSettings(), and UpdatePreview().

g_fRandomizeMessages

BOOL g_fRandomizeMessages

extern

Definition at line 21 of file settings.c.

Referenced by ConfigDlgProc(), DoMatrixMessage(), LoadSettings(), and SaveSettings().

g_fScreenSaving

BOOL g_fScreenSaving

extern

Definition at line 23 of file settings.c.

g_hFont

HFONT g_hFont

extern

Definition at line 25 of file settings.c.

Referenced by ConfigDlgProc(), SetMatrixMessage(), and SetMessageFont().

g_nCurrentMessage

int g_nCurrentMessage

extern

g_nDensity

int g_nDensity

extern

Definition at line 19 of file settings.c.

Referenced by ConfigDlgProc(), LoadSettings(), and SaveSettings().

g_nFontSize

int g_nFontSize

extern

Definition at line 20 of file settings.c.

Referenced by ConfigDlgProc(), InitMatrixMessage(), LoadSettings(), SaveSettings(), and UpdatePreview().

g_nMatrixSpeed

int g_nMatrixSpeed

extern

Definition at line 18 of file settings.c.

Referenced by ConfigDlgProc(), LoadSettings(), MatrixWndProc(), and SaveSettings().

g_nMessageSpeed

int g_nMessageSpeed

extern

Definition at line 15 of file settings.c.

Referenced by ConfigDlgProc(), DoMatrixMessage(), LoadSettings(), MessageSpeed(), and SaveSettings().

g_nNumMessages

int g_nNumMessages

extern

Definition at line 14 of file settings.c.

Referenced by ConfigDlgProc(), DoMatrixMessage(), LoadSettings(), and SaveSettings().

g_szFontName

TCHAR g_szFontName[]

extern

Definition at line 16 of file settings.c.

Referenced by ConfigDlgProc(), InitMatrixMessage(), LoadSettings(), SaveSettings(), and UpdatePreview().

g_szMessages

TCHAR g_szMessages[MAX_MESSAGES][MAXMSG_LENGTH]

extern

Definition at line 13 of file settings.c.

Referenced by ConfigDlgProc(), DoMatrixMessage(), InitMatrixMessage(), LoadSettings(), and SaveSettings().