screensaver.c File Reference

#include "desk.h"

Include dependency graph for screensaver.c:

Go to the source code of this file.

Classes
struct	SCREEN_SAVER_ITEM
struct	_DATA

Macros
#define	MAX_SCREENSAVERS   100

Typedefs
typedef struct _DATA	DATA
typedef struct _DATA *	PDATA

Functions
static LPTSTR	GetCurrentScreenSaverValue (LPTSTR lpValue)
static VOID	SelectionChanged (HWND hwndDlg, PDATA pData)
LRESULT CALLBACK	RedrawSubclassProc (HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
static VOID	ShowScreenSaverPreview (IN LPDRAWITEMSTRUCT draw, IN PDATA pData)
static VOID	SetScreenSaverPreviewBox (HWND hwndDlg, PDATA pData)
static BOOL	WaitForSettingsDialog (HWND hwndDlg, HANDLE hProcess)
static VOID	ScreenSaverConfig (HWND hwndDlg, PDATA pData)
static VOID	ScreenSaverPreview (HWND hwndDlg, PDATA pData)
static VOID	CheckRegScreenSaverIsSecure (HWND hwndDlg)
static BOOL	AddScreenSaverItem (_In_ HWND hwndScreenSavers, _In_ PDATA pData, _In_ SCREEN_SAVER_ITEM *ScreenSaverItem)
static BOOL	AddScreenSaver (_In_ HWND hwndScreenSavers, _In_ PDATA pData, _In_ LPCTSTR pszFilePath, _In_ LPCTSTR pszFileName)
static VOID	SearchScreenSavers (_In_ HWND hwndScreenSavers, _In_ PDATA pData, _In_ LPCTSTR pszSearchPath)
static VOID	EnumScreenSavers (_In_ HWND hwndScreenSavers, _In_ PDATA pData)
static VOID	SetScreenSaver (HWND hwndDlg, PDATA pData)
static BOOL	OnInitDialog (HWND hwndDlg, PDATA pData)
INT_PTR CALLBACK	ScreenSaverPageProc (HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)

Variables
static const TCHAR	szPreviewWndClass [] = TEXT("SSDemoParent")

Macro Definition Documentation

MAX_SCREENSAVERS

#define MAX_SCREENSAVERS   100

Definition at line 13 of file screensaver.c.

Typedef Documentation

DATA

typedef struct _DATA DATA

PDATA

typedef struct _DATA * PDATA

Function Documentation

AddScreenSaver()

static BOOL AddScreenSaver ( _In_ HWND  hwndScreenSavers, _In_ PDATA  pData, _In_ LPCTSTR  pszFilePath, _In_ LPCTSTR  pszFileName  )

static

Definition at line 442 of file screensaver.c.

{
    SCREEN_SAVER_ITEM* ScreenSaverItem;
    HANDLE hModule;
    HRESULT hr;
 
    if (pData->ScreenSaverCount >= MAX_SCREENSAVERS)
        return FALSE;
 
    ScreenSaverItem = pData->ScreenSaverItems + pData->ScreenSaverCount;
 
    ScreenSaverItem->bIsScreenSaver = TRUE;
 
    hModule = LoadLibraryEx(pszFilePath,
                            NULL,
                            DONT_RESOLVE_DLL_REFERENCES | LOAD_LIBRARY_AS_DATAFILE);
    if (hModule)
    {
        if (LoadString(hModule,
                       1,
                       ScreenSaverItem->szDisplayName,
                       _countof(ScreenSaverItem->szDisplayName)) == 0)
        {
            /* If the string does not exist, copy the file name */
            hr = StringCbCopy(ScreenSaverItem->szDisplayName,
                              sizeof(ScreenSaverItem->szDisplayName),
                              pszFileName);
            if (FAILED(hr))
            {
                FreeLibrary(hModule);
                return FALSE;
            }
            /* Remove the .scr extension */
            ScreenSaverItem->szDisplayName[_tcslen(pszFileName)-4] = _T('\0');
        }
        FreeLibrary(hModule);
    }
    else
    {
        hr = StringCbCopy(ScreenSaverItem->szDisplayName,
                          sizeof(ScreenSaverItem->szDisplayName),
                          _T("Unknown"));
        if (FAILED(hr))
            return FALSE;
    }
 
    hr = StringCbCopy(ScreenSaverItem->szFilename,
                      sizeof(ScreenSaverItem->szFilename),
                      pszFilePath);
    if (FAILED(hr))
        return FALSE;
 
    return AddScreenSaverItem(hwndScreenSavers, pData, ScreenSaverItem);
}

Referenced by OnInitDialog(), and SearchScreenSavers().

AddScreenSaverItem()

static BOOL AddScreenSaverItem ( _In_ HWND  hwndScreenSavers, _In_ PDATA  pData, _In_ SCREEN_SAVER_ITEM *  ScreenSaverItem  )

static

Definition at line 415 of file screensaver.c.

{
    UINT i;
 
    if (pData->ScreenSaverCount >= MAX_SCREENSAVERS)
        return FALSE;
 
    i = SendMessage(hwndScreenSavers,
                    CB_ADDSTRING,
                    0,
                    (LPARAM)ScreenSaverItem->szDisplayName);
    if ((i == CB_ERR) || (i == CB_ERRSPACE))
        return FALSE;
 
    SendMessage(hwndScreenSavers,
                CB_SETITEMDATA,
                i,
                (LPARAM)pData->ScreenSaverCount);
 
    pData->ScreenSaverCount++;
    return TRUE;
}

Referenced by AddScreenSaver(), and EnumScreenSavers().

CheckRegScreenSaverIsSecure()

static VOID CheckRegScreenSaverIsSecure ( HWND  hwndDlg )

static

Definition at line 370 of file screensaver.c.

{
    HKEY hKey;
    TCHAR szBuffer[2];
    DWORD bufferSize = sizeof(szBuffer);
    DWORD varType = REG_SZ;
    LONG result;
 
    if (RegOpenKeyEx(HKEY_CURRENT_USER,
                     _T("Control Panel\\Desktop"),
                     0,
                     KEY_ALL_ACCESS,
                     &hKey) == ERROR_SUCCESS)
    {
        result = RegQueryValueEx(hKey,
                                _T("ScreenSaverIsSecure"),
                                0,
                                &varType,
                                (LPBYTE)szBuffer,
                                &bufferSize);
        RegCloseKey(hKey);
 
        if (result == ERROR_SUCCESS)
        {
            if (_ttoi(szBuffer) == 1)
            {
                SendDlgItemMessage(hwndDlg,
                                   IDC_SCREENS_USEPASSCHK,
                                   BM_SETCHECK,
                                   (WPARAM)BST_CHECKED,
                                   0);
                return;
            }
        }
 
        SendDlgItemMessage(hwndDlg,
                           IDC_SCREENS_USEPASSCHK,
                           BM_SETCHECK,
                           (WPARAM)BST_UNCHECKED,
                           0);
    }
}

Referenced by OnInitDialog().

EnumScreenSavers()

static VOID EnumScreenSavers ( _In_ HWND  hwndScreenSavers, _In_ PDATA  pData  )

static

Definition at line 544 of file screensaver.c.

{
    SCREEN_SAVER_ITEM* ScreenSaverItem;
    PTCHAR pBackSlash;
    TCHAR szSearchPath[MAX_PATH];
    TCHAR szLocalPath[MAX_PATH];
 
    /* Initialize the number of list items */
    pData->ScreenSaverCount = 0;
 
    /* Add the "(None)" item */
    ScreenSaverItem = pData->ScreenSaverItems;
 
    ScreenSaverItem->bIsScreenSaver = FALSE;
 
    LoadString(hApplet,
               IDS_NONE,
               ScreenSaverItem->szDisplayName,
               _countof(ScreenSaverItem->szDisplayName));
 
    AddScreenSaverItem(hwndScreenSavers, pData, ScreenSaverItem);
 
    /* Add all the screensavers where the applet is stored */
    GetModuleFileName(hApplet, szLocalPath, _countof(szLocalPath));
    pBackSlash = _tcsrchr(szLocalPath, _T('\\'));
    if (pBackSlash != NULL)
    {
        *pBackSlash = _T('\0');
        SearchScreenSavers(hwndScreenSavers, pData, szLocalPath);
    }
 
    /* Add all the screensavers in the C:\ReactOS\System32 directory */
    GetSystemDirectory(szSearchPath, _countof(szSearchPath));
    if (pBackSlash != NULL && _tcsicmp(szSearchPath, szLocalPath) != 0)
        SearchScreenSavers(hwndScreenSavers, pData, szSearchPath);
 
    /* Add all the screensavers in the C:\ReactOS directory */
    GetWindowsDirectory(szSearchPath, _countof(szSearchPath));
    if (pBackSlash != NULL && _tcsicmp(szSearchPath, szLocalPath) != 0)
        SearchScreenSavers(hwndScreenSavers, pData, szSearchPath);
}

Referenced by OnInitDialog().

GetCurrentScreenSaverValue()

static LPTSTR GetCurrentScreenSaverValue ( LPTSTR  lpValue )

static

Definition at line 37 of file screensaver.c.

{
    HKEY hKey;
    LPTSTR lpBuf = NULL;
    DWORD BufSize, Type = REG_SZ;
    LONG Ret;
 
    Ret = RegOpenKeyEx(HKEY_CURRENT_USER,
                       _T("Control Panel\\Desktop"),
                       0,
                       KEY_READ,
                       &hKey);
    if (Ret != ERROR_SUCCESS)
        return NULL;
 
    Ret = RegQueryValueEx(hKey,
                          lpValue,
                          0,
                          &Type,
                          NULL,
                          &BufSize);
    if (Ret == ERROR_SUCCESS)
    {
        lpBuf = HeapAlloc(GetProcessHeap(), 0, BufSize);
        if (lpBuf)
        {
            Ret = RegQueryValueEx(hKey,
                                  lpValue,
                                  0,
                                  &Type,
                                  (LPBYTE)lpBuf,
                                  &BufSize);
            if (Ret != ERROR_SUCCESS)
            {
                HeapFree(GetProcessHeap(), 0, lpBuf);
                lpBuf = NULL;
            }
        }
    }
 
    RegCloseKey(hKey);
 
    return lpBuf;
}

Referenced by OnInitDialog().

OnInitDialog()

static BOOL OnInitDialog ( HWND  hwndDlg, PDATA  pData  )

static

Definition at line 657 of file screensaver.c.

{
    HWND hwndSSCombo = GetDlgItem(hwndDlg, IDC_SCREENS_LIST);
    LPTSTR pSsValue;
    INT iCurSs;
    WNDCLASS wc = {0};
 
    pData = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DATA));
    if (!pData)
    {
        EndDialog(hwndDlg, -1);
        return FALSE;
    }
 
    wc.lpfnWndProc = DefWindowProc;
    wc.hInstance = hApplet;
    wc.hCursor = NULL;
    wc.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
    wc.lpszClassName = szPreviewWndClass;
 
    if (RegisterClass(&wc))
    {
        HWND hParent = GetDlgItem(hwndDlg, IDC_SCREENS_PREVIEW);
        HWND hChild;
 
        if (hParent != NULL)
        {
            pData->OldPreviewProc = (WNDPROC)GetWindowLongPtr(hParent, GWLP_WNDPROC);
            SetWindowLongPtr(hParent, GWLP_WNDPROC, (LONG_PTR)RedrawSubclassProc);
            SetWindowLongPtr(hParent, GWLP_USERDATA, (LONG_PTR)pData);
        }
 
        hChild = CreateWindowEx(0, szPreviewWndClass, NULL,
                                WS_CHILD | WS_CLIPCHILDREN,
                                0, 0, 0, 0, hParent,
                                NULL, hApplet, NULL);
        if (hChild != NULL)
        {
            RECT rc;
            GetClientRect(hParent, &rc);
            rc.left += MONITOR_LEFT;
            rc.top += MONITOR_TOP;
            MoveWindow(hChild, rc.left, rc.top, MONITOR_WIDTH, MONITOR_HEIGHT, FALSE);
        }
 
        pData->ScreenSaverPreviewParent = hChild;
    }
 
    SetWindowLongPtr(hwndDlg, DWLP_USER, (LONG_PTR)pData);
 
    pData->Selection = -1;
 
    SendDlgItemMessage(hwndDlg,
                       IDC_SCREENS_TIME,
                       UDM_SETRANGE,
                       0,
                       MAKELONG(240, 1));
 
    EnumScreenSavers(hwndSSCombo, pData);
 
    CheckRegScreenSaverIsSecure(hwndDlg);
 
    /* Set the current screensaver in the combo box */
    iCurSs = 0; // Default to "(None)"
    pSsValue = GetCurrentScreenSaverValue(_T("SCRNSAVE.EXE"));
    if (pSsValue)
    {
        BOOL bFound = FALSE;
        INT i;
 
        /* Find whether the current screensaver is in the list */
        for (i = 0; i < pData->ScreenSaverCount; i++)
        {
            if (!_tcsicmp(pSsValue, pData->ScreenSaverItems[i].szFilename))
            {
                bFound = TRUE;
                break;
            }
        }
 
        if (!bFound)
        {
            /* The current screensaver is not in the list: add it */
            // i = pData->ScreenSaverCount;
            bFound = AddScreenSaver(hwndSSCombo, pData, pSsValue, _T("SCRNSAVE.EXE"));
            if (bFound)
                i = pData->ScreenSaverCount - 1;
        }
 
        HeapFree(GetProcessHeap(), 0, pSsValue);
 
        if (bFound)
        {
            /* The current screensaver should be in the list: select it */
            iCurSs = SendMessage(hwndSSCombo,
                                 CB_FINDSTRINGEXACT,
                                 -1,
                                 (LPARAM)pData->ScreenSaverItems[i].szDisplayName);
            if (iCurSs == CB_ERR)
                iCurSs = 0; // Default to "(None)"
        }
    }
    SendMessage(hwndSSCombo, CB_SETCURSEL, iCurSs, 0);
 
    /* Set the current timeout */
    pSsValue = GetCurrentScreenSaverValue(_T("ScreenSaveTimeOut"));
    if (pSsValue)
    {
        UINT Time = _ttoi(pSsValue) / 60;
 
        HeapFree(GetProcessHeap(), 0, pSsValue);
 
        SendDlgItemMessage(hwndDlg,
                           IDC_SCREENS_TIME,
                           UDM_SETPOS32,
                           0,
                           Time);
    }
 
    SelectionChanged(hwndDlg, pData);
 
    return TRUE;
}

Referenced by ScreenSaverPageProc().

RedrawSubclassProc()

LRESULT CALLBACK RedrawSubclassProc	(	HWND	hwndDlg,
		UINT	uMsg,
		WPARAM	wParam,
		LPARAM	lParam
	)

Definition at line 110 of file screensaver.c.

{
    HWND hwnd;
    PDATA pData;
    LRESULT Ret = FALSE;
 
    pData = (PDATA)GetWindowLongPtr(hwndDlg, GWLP_USERDATA);
    if (!pData)
        return Ret;
 
    Ret = CallWindowProc(pData->OldPreviewProc, hwndDlg, uMsg, wParam, lParam);
 
    if (uMsg == WM_PAINT)
    {
        hwnd = pData->ScreenSaverPreviewParent;
        if (hwnd)
            RedrawWindow(hwnd, NULL, NULL, RDW_INVALIDATE | RDW_ERASE | RDW_ALLCHILDREN);
    }
 
    return Ret;
}

Referenced by OnInitDialog().

ScreenSaverConfig()

static VOID ScreenSaverConfig ( HWND  hwndDlg, PDATA  pData  )

static

Definition at line 271 of file screensaver.c.

{
    HRESULT hr;
    STARTUPINFO si;
    PROCESS_INFORMATION pi;
    TCHAR szCmdline[2048];
 
    if (pData->Selection < 1)
        return;
 
    hr = StringCbPrintf(szCmdline, sizeof(szCmdline),
                        TEXT("%s /c:%Iu"),
                        pData->ScreenSaverItems[pData->Selection].szFilename,
                        (ULONG_PTR)hwndDlg);
    if (FAILED(hr))
        return;
 
    ZeroMemory(&si, sizeof(si));
    si.cb = sizeof(si);
    ZeroMemory(&pi, sizeof(pi));
    if (CreateProcess(NULL,
                      szCmdline,
                      NULL,
                      NULL,
                      FALSE,
                      0,
                      NULL,
                      NULL,
                      &si,
                      &pi))
    {
        /* Kill off the previous preview process */
        if (pData->PrevWindowPi.hProcess)
        {
            TerminateProcess(pData->PrevWindowPi.hProcess, 0);
            CloseHandle(pData->PrevWindowPi.hProcess);
            CloseHandle(pData->PrevWindowPi.hThread);
            pData->PrevWindowPi.hThread = pData->PrevWindowPi.hProcess = NULL;
        }
 
        if (WaitForSettingsDialog(hwndDlg, pi.hProcess))
            SetScreenSaverPreviewBox(hwndDlg, pData);
 
        CloseHandle(pi.hProcess);
        CloseHandle(pi.hThread);
    }
}

Referenced by ScreenSaverPageProc().

ScreenSaverPageProc()

INT_PTR CALLBACK ScreenSaverPageProc	(	HWND	hwndDlg,
		UINT	uMsg,
		WPARAM	wParam,
		LPARAM	lParam
	)

Definition at line 783 of file screensaver.c.

{
    PDATA pData;
 
    pData = (PDATA)GetWindowLongPtr(hwndDlg, DWLP_USER);
 
    switch (uMsg)
    {
        case WM_INITDIALOG:
        {
            OnInitDialog(hwndDlg, pData);
            break;
        }
 
        case WM_DESTROY:
        {
            if (pData->ScreenSaverPreviewParent)
            {
                SetWindowLongPtr(GetDlgItem(hwndDlg, IDC_SCREENS_PREVIEW),
                                 GWLP_WNDPROC,
                                 (LONG_PTR)pData->OldPreviewProc);
                DestroyWindow(pData->ScreenSaverPreviewParent);
                pData->ScreenSaverPreviewParent = NULL;
            }
            UnregisterClass(szPreviewWndClass, hApplet);
            if (pData->PrevWindowPi.hProcess)
            {
                TerminateProcess(pData->PrevWindowPi.hProcess, 0);
                CloseHandle(pData->PrevWindowPi.hProcess);
                CloseHandle(pData->PrevWindowPi.hThread);
            }
            HeapFree(GetProcessHeap(), 0, pData);
            break;
        }
 
        case WM_ENDSESSION:
        {
            SetScreenSaverPreviewBox(hwndDlg, pData);
            break;
        }
 
        case WM_DRAWITEM:
        {
            LPDRAWITEMSTRUCT lpDrawItem;
            lpDrawItem = (LPDRAWITEMSTRUCT)lParam;
 
            if (lpDrawItem->CtlID == IDC_SCREENS_PREVIEW)
                ShowScreenSaverPreview(lpDrawItem, pData);
            break;
        }
 
        case WM_COMMAND:
        {
            DWORD controlId = LOWORD(wParam);
            DWORD command   = HIWORD(wParam);
 
            switch (controlId)
            {
                case IDC_SCREENS_LIST:
                {
                    if (HIWORD(wParam) == CBN_SELCHANGE)
                    {
                        SelectionChanged(hwndDlg, pData);
                        SetScreenSaverPreviewBox(hwndDlg, pData);
                        PropSheet_Changed(GetParent(hwndDlg), hwndDlg);
                    }
                    break;
                }
 
                case IDC_SCREENS_TIMEDELAY:
                {
                    if (command == EN_CHANGE)
                        PropSheet_Changed(GetParent(hwndDlg), hwndDlg);
                    break;
                }
 
                case IDC_SCREENS_POWER_BUTTON: // Start Powercfg.Cpl
                {
                    if (command == BN_CLICKED)
                        WinExec("rundll32 shell32.dll,Control_RunDLL powercfg.cpl",SW_SHOWNORMAL);
                    break;
                }
 
                case IDC_SCREENS_TESTSC: // Screensaver Preview
                {
                    if (command == BN_CLICKED)
                    {
                        ScreenSaverPreview(hwndDlg, pData);
                        SetScreenSaverPreviewBox(hwndDlg, pData);
                    }
                    break;
                }
 
                case IDC_SCREENS_SETTINGS: // Screensaver Settings
                {
                    if (command == BN_CLICKED)
                        ScreenSaverConfig(hwndDlg, pData);
                    break;
                }
 
                case IDC_SCREENS_USEPASSCHK: // Screensaver Is Secure
                {
                    if (command == BN_CLICKED)
                        PropSheet_Changed(GetParent(hwndDlg), hwndDlg);
                    break;
                }
            }
            break;
        }
 
        case WM_NOTIFY:
        {
            LPNMHDR lpnm = (LPNMHDR)lParam;
 
            switch(lpnm->code)
            {
                case PSN_APPLY:
                {
                    SetScreenSaver(hwndDlg, pData);
                    return TRUE;
                }
 
                case PSN_SETACTIVE:
                {
                    /* Enable screensaver preview support */
                    SetScreenSaverPreviewBox(hwndDlg, pData);
                    break;
                }
 
                case PSN_KILLACTIVE:
                {
                    /* Kill running preview screensaver */
                    if (pData->PrevWindowPi.hProcess)
                    {
                        TerminateProcess(pData->PrevWindowPi.hProcess, 0);
                        CloseHandle(pData->PrevWindowPi.hProcess);
                        CloseHandle(pData->PrevWindowPi.hThread);
                        pData->PrevWindowPi.hThread = pData->PrevWindowPi.hProcess = NULL;
                    }
                    break;
                }
            }
        }
        break;
    }
 
    return FALSE;
}

ScreenSaverPreview()

static VOID ScreenSaverPreview ( HWND  hwndDlg, PDATA  pData  )

static

Definition at line 323 of file screensaver.c.

{
    HRESULT hr;
    STARTUPINFO si;
    PROCESS_INFORMATION pi;
    TCHAR szCmdline[2048];
 
    if (pData->Selection < 1)
        return;
 
    /* Kill off the previous preview process */
    if (pData->PrevWindowPi.hProcess)
    {
        TerminateProcess(pData->PrevWindowPi.hProcess, 0);
        CloseHandle(pData->PrevWindowPi.hProcess);
        CloseHandle(pData->PrevWindowPi.hThread);
        pData->PrevWindowPi.hThread = pData->PrevWindowPi.hProcess = NULL;
    }
 
    hr = StringCbPrintf(szCmdline, sizeof(szCmdline),
                        TEXT("%s /s"),
                        pData->ScreenSaverItems[pData->Selection].szFilename);
    if (FAILED(hr))
        return;
 
    ZeroMemory(&si, sizeof(si));
    si.cb = sizeof(si);
    ZeroMemory(&pi, sizeof(pi));
    if (CreateProcess(NULL,
                      szCmdline,
                      NULL,
                      NULL,
                      FALSE,
                      0,
                      NULL,
                      NULL,
                      &si,
                      &pi))
    {
        WaitForSingleObject(pi.hProcess, INFINITE);
        CloseHandle(pi.hProcess);
        CloseHandle(pi.hThread);
    }
}

Referenced by ScreenSaverPageProc().

SearchScreenSavers()

static VOID SearchScreenSavers ( _In_ HWND  hwndScreenSavers, _In_ PDATA  pData, _In_ LPCTSTR  pszSearchPath  )

static

Definition at line 502 of file screensaver.c.

{
    HRESULT hr;
    WIN32_FIND_DATA fd;
    HANDLE hFind;
    TCHAR szFilePath[MAX_PATH];
 
    hr = StringCbPrintf(szFilePath, sizeof(szFilePath),
                        TEXT("%s\\*.scr"), pszSearchPath);
    if (FAILED(hr))
        return;
 
    hFind = FindFirstFile(szFilePath, &fd);
    if (hFind == INVALID_HANDLE_VALUE)
        return;
 
    do
    {
        /* Don't add any hidden screensavers */
        if (fd.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN)
            continue;
 
        if (pData->ScreenSaverCount >= MAX_SCREENSAVERS)
            break;
 
        hr = StringCbPrintf(szFilePath, sizeof(szFilePath),
                            TEXT("%s\\%s"), pszSearchPath, fd.cFileName);
        if (FAILED(hr))
            break;
 
        if (!AddScreenSaver(hwndScreenSavers, pData, szFilePath, fd.cFileName))
            break;
 
    } while (FindNextFile(hFind, &fd));
 
    FindClose(hFind);
}

Referenced by EnumScreenSavers().

SelectionChanged()

static VOID SelectionChanged ( HWND  hwndDlg, PDATA  pData  )

static

Definition at line 84 of file screensaver.c.

{
    HWND hwndCombo;
    BOOL bEnable;
    INT i;
 
    hwndCombo = GetDlgItem(hwndDlg, IDC_SCREENS_LIST);
 
    i = (INT)SendMessage(hwndCombo, CB_GETCURSEL, 0, 0);
    i = (INT)SendMessage(hwndCombo, CB_GETITEMDATA, i, 0);
 
    pData->Selection = i;
 
    bEnable = (i != 0);
 
    EnableWindow(GetDlgItem(hwndDlg, IDC_SCREENS_SETTINGS), bEnable);
    EnableWindow(GetDlgItem(hwndDlg, IDC_SCREENS_TESTSC), bEnable);
    EnableWindow(GetDlgItem(hwndDlg, IDC_SCREENS_USEPASSCHK), bEnable);
    EnableWindow(GetDlgItem(hwndDlg, IDC_SCREENS_TIMEDELAY), bEnable);
    EnableWindow(GetDlgItem(hwndDlg, IDC_SCREENS_TIME), bEnable);
    EnableWindow(GetDlgItem(hwndDlg, IDC_WAITTEXT), bEnable);
    EnableWindow(GetDlgItem(hwndDlg, IDC_MINTEXT), bEnable);
}

Referenced by OnInitDialog(), and ScreenSaverPageProc().

SetScreenSaver()

static VOID SetScreenSaver ( HWND  hwndDlg, PDATA  pData  )

static

Definition at line 590 of file screensaver.c.

{
    HKEY regKey;
 
    if (RegOpenKeyEx(HKEY_CURRENT_USER,
                     _T("Control Panel\\Desktop"),
                     0,
                     KEY_ALL_ACCESS,
                     &regKey) == ERROR_SUCCESS)
    {
        INT Time;
        BOOL bRet;
        TCHAR Sec;
        UINT Ret;
 
        /* Set the screensaver */
        if (pData->ScreenSaverItems[pData->Selection].bIsScreenSaver)
        {
            SIZE_T Length = (_tcslen(pData->ScreenSaverItems[pData->Selection].szFilename) + 1) * sizeof(TCHAR);
            RegSetValueEx(regKey,
                          _T("SCRNSAVE.EXE"),
                          0,
                          REG_SZ,
                          (PBYTE)pData->ScreenSaverItems[pData->Selection].szFilename,
                          (DWORD)Length);
 
            SystemParametersInfo(SPI_SETSCREENSAVEACTIVE, TRUE, 0, SPIF_UPDATEINIFILE);
        }
        else
        {
            /* Windows deletes the value if no screensaver is set */
            RegDeleteValue(regKey, _T("SCRNSAVE.EXE"));
 
            SystemParametersInfo(SPI_SETSCREENSAVEACTIVE, FALSE, 0, SPIF_UPDATEINIFILE);
        }
 
        /* Set the secure value */
        Ret = SendDlgItemMessage(hwndDlg,
                                 IDC_SCREENS_USEPASSCHK,
                                 BM_GETCHECK,
                                 0,
                                 0);
        Sec = (Ret == BST_CHECKED) ? _T('1') : _T('0');
        RegSetValueEx(regKey,
                      _T("ScreenSaverIsSecure"),
                      0,
                      REG_SZ,
                      (PBYTE)&Sec,
                      sizeof(TCHAR));
 
        /* Set the screensaver time delay */
        Time = GetDlgItemInt(hwndDlg,
                             IDC_SCREENS_TIMEDELAY,
                             &bRet,
                             FALSE);
        if (Time == 0)
            Time = 1;
        Time *= 60; // Convert to seconds
 
        SystemParametersInfoW(SPI_SETSCREENSAVETIMEOUT, Time, 0, SPIF_SENDCHANGE | SPIF_UPDATEINIFILE);
 
        RegCloseKey(regKey);
    }
}

Referenced by ScreenSaverPageProc().

SetScreenSaverPreviewBox()

static VOID SetScreenSaverPreviewBox ( HWND  hwndDlg, PDATA  pData  )

static

Definition at line 178 of file screensaver.c.

{
    HWND hPreview = pData->ScreenSaverPreviewParent;
    HRESULT hr;
    STARTUPINFO si;
    TCHAR szCmdline[2048];
 
    /* Kill off the previous preview process */
    if (pData->PrevWindowPi.hProcess)
    {
        TerminateProcess(pData->PrevWindowPi.hProcess, 0);
        CloseHandle(pData->PrevWindowPi.hProcess);
        CloseHandle(pData->PrevWindowPi.hThread);
        pData->PrevWindowPi.hThread = pData->PrevWindowPi.hProcess = NULL;
    }
    ShowWindow(pData->ScreenSaverPreviewParent, SW_HIDE);
 
    if (pData->Selection < 1)
        return;
 
    hr = StringCbPrintf(szCmdline, sizeof(szCmdline),
                        TEXT("%s /p %Iu"),
                        pData->ScreenSaverItems[pData->Selection].szFilename,
                        (ULONG_PTR)hPreview);
    if (FAILED(hr))
        return;
 
    ZeroMemory(&si, sizeof(si));
    si.cb = sizeof(si);
    ZeroMemory(&pData->PrevWindowPi, sizeof(pData->PrevWindowPi));
 
    ShowWindow(pData->ScreenSaverPreviewParent, SW_SHOW);
 
    if (!CreateProcess(NULL,
                       szCmdline,
                       NULL,
                       NULL,
                       FALSE,
                       0,
                       NULL,
                       NULL,
                       &si,
                       &pData->PrevWindowPi))
    {
        pData->PrevWindowPi.hThread = pData->PrevWindowPi.hProcess = NULL;
    }
}

Referenced by ScreenSaverConfig(), and ScreenSaverPageProc().

ShowScreenSaverPreview()

static VOID ShowScreenSaverPreview ( IN LPDRAWITEMSTRUCT  draw, IN PDATA  pData  )

static

Definition at line 137 of file screensaver.c.

{
    HBRUSH hBrush;
    HDC hDC;
    HGDIOBJ hOldObj;
    RECT rcItem = {
        MONITOR_LEFT,
        MONITOR_TOP,
        MONITOR_RIGHT,
        MONITOR_BOTTOM
    };
 
    hDC = CreateCompatibleDC(draw->hDC);
    hOldObj = SelectObject(hDC, g_GlobalData.hMonitorBitmap);
 
    if (!IsWindowVisible(pData->ScreenSaverPreviewParent))
    {
        /* FIXME: Draw static bitmap inside monitor. */
        hBrush = CreateSolidBrush(g_GlobalData.desktop_color);
        FillRect(hDC, &rcItem, hBrush);
        DeleteObject(hBrush);
    }
 
    GdiTransparentBlt(draw->hDC,
                      draw->rcItem.left, draw->rcItem.top,
                      draw->rcItem.right - draw->rcItem.left + 1,
                      draw->rcItem.bottom - draw->rcItem.top + 1,
                      hDC,
                      0, 0,
                      g_GlobalData.bmMonWidth, g_GlobalData.bmMonHeight,
                      MONITOR_ALPHA);
 
    SelectObject(hDC, hOldObj);
    DeleteDC(hDC);
}

Referenced by ScreenSaverPageProc().

WaitForSettingsDialog()

static BOOL WaitForSettingsDialog ( HWND  hwndDlg, HANDLE  hProcess  )

static

Definition at line 227 of file screensaver.c.

{
    DWORD dwResult;
    MSG msg;
 
    while (TRUE)
    {
        dwResult = MsgWaitForMultipleObjects(1,
                                             &hProcess,
                                             FALSE,
                                             INFINITE,
                                             QS_ALLINPUT);
        if (dwResult == WAIT_OBJECT_0 + 1)
        {
            if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
            {
                if (msg.message == WM_QUIT)
                {
                    return FALSE;
                }
                if (IsDialogMessage(hwndDlg, &msg))
                {
                    TranslateMessage(&msg);
                    DispatchMessage(&msg);
                }
            }
        }
        else if (dwResult == WAIT_OBJECT_0)
        {
            return TRUE;
        }
        else
        {
            return FALSE;
        }
    }
}

Referenced by ScreenSaverConfig().

Variable Documentation

szPreviewWndClass

const TCHAR szPreviewWndClass[] = TEXT("SSDemoParent")

static

Definition at line 15 of file screensaver.c.

Referenced by OnInitDialog(), and ScreenSaverPageProc().