timezone.c File Reference

#include "timedate.h"
#include <tzlib.h>

Include dependency graph for timezone.c:

Go to the source code of this file.

Classes
struct	_TIMEZONE_ENTRY

Typedefs
typedef struct _TIMEZONE_ENTRY	TIMEZONE_ENTRY
typedef struct _TIMEZONE_ENTRY *	PTIMEZONE_ENTRY

Functions
static PTIMEZONE_ENTRY	GetSelectedTimeZoneEntry (HWND hwndCombo)
static BOOL	HasDaylightSaving (PTIMEZONE_ENTRY Entry)
static VOID	UpdateDstCheckbox (HWND hwndDlg)
static PTIMEZONE_ENTRY	GetLargerTimeZoneEntry (LONG Bias, LPWSTR lpDescription)
static LONG	RetrieveTimeZone (IN HKEY hZoneKey, IN PVOID Context)
static VOID	CreateTimeZoneList (VOID)
static VOID	DestroyTimeZoneList (VOID)
static VOID	ShowTimeZoneList (HWND hwnd)
static VOID	SetLocalTimeZone (HWND hwnd)
INT_PTR CALLBACK	TimeZonePageProc (HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)

Variables
static HBITMAP	hBitmap = NULL
static int	cxSource
static int	cySource
PTIMEZONE_ENTRY	TimeZoneListHead = NULL
PTIMEZONE_ENTRY	TimeZoneListTail = NULL

Typedef Documentation

PTIMEZONE_ENTRY

typedef struct _TIMEZONE_ENTRY * PTIMEZONE_ENTRY

TIMEZONE_ENTRY

typedef struct _TIMEZONE_ENTRY TIMEZONE_ENTRY

Function Documentation

CreateTimeZoneList()

static VOID CreateTimeZoneList ( VOID  )

static

Definition at line 194 of file timezone.c.

{
    EnumerateTimeZoneList(RetrieveTimeZone, NULL);
}

Referenced by TimeZonePageProc().

DestroyTimeZoneList()

static VOID DestroyTimeZoneList ( VOID  )

static

Definition at line 200 of file timezone.c.

{
    PTIMEZONE_ENTRY Entry;
 
    while (TimeZoneListHead != NULL)
    {
        Entry = TimeZoneListHead;
 
        TimeZoneListHead = Entry->Next;
        if (TimeZoneListHead != NULL)
        {
            TimeZoneListHead->Prev = NULL;
        }
 
        HeapFree(GetProcessHeap(), 0, Entry);
    }
 
    TimeZoneListTail = NULL;
}

Referenced by TimeZonePageProc().

GetLargerTimeZoneEntry()

static PTIMEZONE_ENTRY GetLargerTimeZoneEntry ( LONG  Bias, LPWSTR  lpDescription  )

static

Definition at line 90 of file timezone.c.

{
    PTIMEZONE_ENTRY Entry;
 
    Entry = TimeZoneListHead;
    while (Entry != NULL)
    {
        if (Entry->TimezoneInfo.Bias < Bias)
            return Entry;
        if (Entry->TimezoneInfo.Bias == Bias)
        {
            if (_wcsicmp(Entry->Description, lpDescription) > 0)
                return Entry;
        }
 
        Entry = Entry->Next;
    }
 
    return NULL;
}

Referenced by RetrieveTimeZone().

GetSelectedTimeZoneEntry()

static PTIMEZONE_ENTRY GetSelectedTimeZoneEntry ( HWND  hwndCombo )

static

Definition at line 33 of file timezone.c.

{
    PTIMEZONE_ENTRY Entry;
    DWORD dwIndex;
    DWORD i;
 
    dwIndex = (DWORD)SendMessageW(hwndCombo, CB_GETCURSEL, 0, 0);
    if (dwIndex == CB_ERR)
        return NULL;
 
    for (Entry = TimeZoneListHead, i = 0; i < dwIndex; i++, Entry = Entry->Next)
    {
        if (Entry == NULL)
            return NULL;
    }
 
    return Entry;
}

Referenced by SetLocalTimeZone(), and UpdateDstCheckbox().

HasDaylightSaving()

static BOOL HasDaylightSaving ( PTIMEZONE_ENTRY  Entry )

static

Definition at line 53 of file timezone.c.

{
    /* If StandardDate.wMonth is 0, DST does not apply to this timezone */
    return (Entry != NULL && Entry->TimezoneInfo.StandardDate.wMonth != 0);
}

Referenced by UpdateDstCheckbox().

RetrieveTimeZone()

static LONG RetrieveTimeZone ( IN HKEY  hZoneKey, IN PVOID  Context  )

static

Definition at line 114 of file timezone.c.

{
    LONG lError;
    PTIMEZONE_ENTRY Entry;
    PTIMEZONE_ENTRY Current;
    ULONG DescriptionSize;
    ULONG StandardNameSize;
    ULONG DaylightNameSize;
 
    Entry = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(TIMEZONE_ENTRY));
    if (Entry == NULL)
    {
        return ERROR_NOT_ENOUGH_MEMORY;
    }
 
    DescriptionSize  = sizeof(Entry->Description);
    StandardNameSize = sizeof(Entry->StandardName);
    DaylightNameSize = sizeof(Entry->DaylightName);
 
    lError = QueryTimeZoneData(hZoneKey,
                               NULL,
                               &Entry->TimezoneInfo,
                               Entry->Description,
                               &DescriptionSize,
                               Entry->StandardName,
                               &StandardNameSize,
                               Entry->DaylightName,
                               &DaylightNameSize);
    if (lError != ERROR_SUCCESS)
    {
        HeapFree(GetProcessHeap(), 0, Entry);
        return lError;
    }
 
    if (TimeZoneListHead == NULL &&
        TimeZoneListTail == NULL)
    {
        Entry->Prev = NULL;
        Entry->Next = NULL;
        TimeZoneListHead = Entry;
        TimeZoneListTail = Entry;
    }
    else
    {
        Current = GetLargerTimeZoneEntry(Entry->TimezoneInfo.Bias, Entry->Description);
        if (Current != NULL)
        {
            if (Current == TimeZoneListHead)
            {
                /* Prepend to head */
                Entry->Prev = NULL;
                Entry->Next = TimeZoneListHead;
                TimeZoneListHead->Prev = Entry;
                TimeZoneListHead = Entry;
            }
            else
            {
                /* Insert before current */
                Entry->Prev = Current->Prev;
                Entry->Next = Current;
                Current->Prev->Next = Entry;
                Current->Prev = Entry;
            }
        }
        else
        {
            /* Append to tail */
            Entry->Prev = TimeZoneListTail;
            Entry->Next = NULL;
            TimeZoneListTail->Next = Entry;
            TimeZoneListTail = Entry;
        }
    }
 
    return ERROR_SUCCESS;
}

Referenced by CreateTimeZoneList().

SetLocalTimeZone()

static VOID SetLocalTimeZone ( HWND  hwnd )

static

Definition at line 281 of file timezone.c.

{
    TIME_ZONE_INFORMATION TimeZoneInformation;
    PTIMEZONE_ENTRY Entry;
 
    Entry = GetSelectedTimeZoneEntry(hwnd);
    if (Entry == NULL)
        return;
 
    wcscpy(TimeZoneInformation.StandardName,
           Entry->StandardName);
    wcscpy(TimeZoneInformation.DaylightName,
           Entry->DaylightName);
 
    TimeZoneInformation.Bias = Entry->TimezoneInfo.Bias;
    TimeZoneInformation.StandardBias = Entry->TimezoneInfo.StandardBias;
    TimeZoneInformation.DaylightBias = Entry->TimezoneInfo.DaylightBias;
 
    memcpy(&TimeZoneInformation.StandardDate,
           &Entry->TimezoneInfo.StandardDate,
           sizeof(SYSTEMTIME));
    memcpy(&TimeZoneInformation.DaylightDate,
           &Entry->TimezoneInfo.DaylightDate,
           sizeof(SYSTEMTIME));
 
    /* Set time zone information */
    SetTimeZoneInformation(&TimeZoneInformation);
}

Referenced by TimeZonePageProc().

ShowTimeZoneList()

static VOID ShowTimeZoneList ( HWND  hwnd )

static

Definition at line 222 of file timezone.c.

{
    TIME_ZONE_INFORMATION TimeZoneInfo;
    PTIMEZONE_ENTRY Entry;
    DWORD dwCount;
    DWORD dwIndex = 0;
    BOOL bFound = FALSE;
 
    if (GetTimeZoneInformation(&TimeZoneInfo) == TIME_ZONE_ID_INVALID)
    {
        /* Failed to retrieve current time-zone info, reset it */
        ZeroMemory(&TimeZoneInfo, sizeof(TimeZoneInfo));
    }
 
    for (Entry = TimeZoneListHead; Entry != NULL; Entry = Entry->Next)
    {
        dwCount = SendMessageW(hwnd,
                               CB_ADDSTRING,
                               0,
                               (LPARAM)Entry->Description);
        if (dwCount == CB_ERR || dwCount == CB_ERRSPACE)
            continue;
 
        /* If the time-zone was found in the list, skip the tests */
        if (bFound)
            continue;
 
        if (*TimeZoneInfo.StandardName && *Entry->StandardName)
        {
            /* Compare by name */
            if (wcscmp(Entry->StandardName, TimeZoneInfo.StandardName) == 0)
            {
                dwIndex = dwCount;
                bFound = TRUE;
            }
        }
        else
        {
            /* Compare by date and bias */
            if ((Entry->TimezoneInfo.Bias == TimeZoneInfo.Bias) &&
                (Entry->TimezoneInfo.StandardBias == TimeZoneInfo.StandardBias) &&
                (Entry->TimezoneInfo.DaylightBias == TimeZoneInfo.DaylightBias) &&
                (memcmp(&Entry->TimezoneInfo.StandardDate, &TimeZoneInfo.StandardDate, sizeof(SYSTEMTIME)) == 0) &&
                (memcmp(&Entry->TimezoneInfo.DaylightDate, &TimeZoneInfo.DaylightDate, sizeof(SYSTEMTIME)) == 0))
            {
                dwIndex = dwCount;
                bFound = TRUE;
            }
        }
    }
 
    SendMessageW(hwnd,
                 CB_SETCURSEL,
                 (WPARAM)dwIndex,
                 0);
}

Referenced by TimeZonePageProc().

TimeZonePageProc()

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

Definition at line 313 of file timezone.c.

{
    BITMAP bitmap;
 
    switch (uMsg)
    {
        case WM_INITDIALOG:
        {
            CreateTimeZoneList();
            ShowTimeZoneList(GetDlgItem(hwndDlg, IDC_TIMEZONELIST));
 
            /* Update DST checkbox based on the selected timezone's DST support */
            UpdateDstCheckbox(hwndDlg);
 
            hBitmap = LoadImageW(hApplet, MAKEINTRESOURCEW(IDC_WORLD), IMAGE_BITMAP, 0, 0, LR_DEFAULTCOLOR);
            if (hBitmap != NULL)
            {
                GetObjectW(hBitmap, sizeof(bitmap), &bitmap);
 
                cxSource = bitmap.bmWidth;
                cySource = bitmap.bmHeight;
            }
            break;
        }
 
        case WM_DRAWITEM:
        {
            LPDRAWITEMSTRUCT lpDrawItem;
            lpDrawItem = (LPDRAWITEMSTRUCT)lParam;
            if(lpDrawItem->CtlID == IDC_WORLD_BACKGROUND)
            {
                HDC hdcMem;
                hdcMem = CreateCompatibleDC(lpDrawItem->hDC);
                if (hdcMem != NULL)
                {
                    SelectObject(hdcMem, hBitmap);
                    StretchBlt(lpDrawItem->hDC, lpDrawItem->rcItem.left, lpDrawItem->rcItem.top,
                               lpDrawItem->rcItem.right - lpDrawItem->rcItem.left,
                               lpDrawItem->rcItem.bottom - lpDrawItem->rcItem.top,
                               hdcMem, 0, 0, cxSource, cySource, SRCCOPY);
                    DeleteDC(hdcMem);
                }
            }
        }
        break;
 
        case WM_COMMAND:
            if (LOWORD(wParam) == IDC_TIMEZONELIST && HIWORD(wParam) == CBN_SELCHANGE)
            {
                /* Update DST checkbox based on the selected timezone's DST support */
                UpdateDstCheckbox(hwndDlg);
                /* Enable the 'Apply' button */
                PropSheet_Changed(GetParent(hwndDlg), hwndDlg);
            }
            else if (LOWORD(wParam) == IDC_AUTODAYLIGHT && HIWORD(wParam) == BN_CLICKED)
            {
                /* Enable the 'Apply' button */
                PropSheet_Changed(GetParent(hwndDlg), hwndDlg);
            }
            break;
 
        case WM_DESTROY:
            DestroyTimeZoneList();
            DeleteObject(hBitmap);
            break;
 
        case WM_NOTIFY:
        {
            LPNMHDR lpnm = (LPNMHDR)lParam;
 
            switch (lpnm->code)
            {
                case PSN_APPLY:
                {
                    SetAutoDaylight(SendDlgItemMessage(hwndDlg, IDC_AUTODAYLIGHT,
                                                       BM_GETCHECK, 0, 0) != BST_UNCHECKED);
                    SetLocalTimeZone(GetDlgItem(hwndDlg, IDC_TIMEZONELIST));
                    SetWindowLongPtr(hwndDlg, DWLP_MSGRESULT, PSNRET_NOERROR);
                    return TRUE;
                }
 
                default:
                    break;
            }
        }
        break;
    }
 
  return FALSE;
}

Referenced by Applet().

UpdateDstCheckbox()

static VOID UpdateDstCheckbox ( HWND  hwndDlg )

static

Definition at line 60 of file timezone.c.

{
    HWND hwndCombo = GetDlgItem(hwndDlg, IDC_TIMEZONELIST);
    HWND hwndCheckbox = GetDlgItem(hwndDlg, IDC_AUTODAYLIGHT);
    PTIMEZONE_ENTRY Entry;
    BOOL bHasDst;
 
    Entry = GetSelectedTimeZoneEntry(hwndCombo);
    bHasDst = HasDaylightSaving(Entry);
 
    /* Enable or disable the checkbox based on DST support, and respect user preference when DST is supported */
    if (bHasDst)
    {
        BOOL bAutoDaylight = GetAutoDaylight();
 
        EnableWindow(hwndCheckbox, TRUE);
        SendMessageW(hwndCheckbox,
                     BM_SETCHECK,
                     bAutoDaylight ? BST_CHECKED : BST_UNCHECKED,
                     0);
    }
    else
    {
        EnableWindow(hwndCheckbox, FALSE);
        SendMessageW(hwndCheckbox, BM_SETCHECK, BST_UNCHECKED, 0);
    }
}

Referenced by TimeZonePageProc().

Variable Documentation

cxSource

int cxSource

static

Definition at line 27 of file timezone.c.

Referenced by TimeZonePageProc().

cySource

int cySource

static

Definition at line 27 of file timezone.c.

Referenced by TimeZonePageProc().

hBitmap

HBITMAP hBitmap = NULL

static

Definition at line 26 of file timezone.c.

Referenced by _write_bitmap(), add_ruler_units(), AddContentTab(), ATL::CImage::Attach(), ATL::CImage::AttachInternal(), BitBltFromClipboard(), BITMAP_CopyBitmap(), BitmapFromClipboardDIB(), BitmapToClipboardDIB(), C1_DrawLabel(), cicConvertBlackBKGBitmap(), cicCreateDitherBrush(), cicCreateMaskBmp(), cicMirrorBitmap(), ClipboardReadBitmap(), ImageModel::CopyBitmap(), create_test_bitmap(), CCicLibMenuItem::CreateBitmap(), CreateCaret(), CreateDIBitmap(), CreateDIBSection(), ATL::CImage::Detach(), DoLoadImageFile(), EMFDRV_StretchBlt(), Get16BitD3DFormat(), GetClipboardDataDimensions(), GetDIBHeight(), GetDIBWidth(), GreGetBitmapDimension(), GreGetDIBitsInternal(), ImageList_AddMasked(), Imm32DrawBitmap(), DragSourceHelper::InitializeFromBitmap(), InitializeImage(), IntSetDIBits(), ImageModel::IsBlackAndWhite(), IWICImagingFactory_CreateBitmapFromHBITMAP_Proxy_W(), load_picture(), LoadCardBitmapsFromLibrary(), MDI_AugmentFrameMenu(), MFDRV_StretchBlt(), NT5_DrawBaseBackground(), NT5_DrawLogoffIcon(), NtGdiGetBitmapBits(), NtGdiGetBitmapDimension(), NtGdiSetBitmapBits(), NtGdiSetBitmapDimension(), NtGdiStretchDIBitsInternal(), NtUserCreateCaret(), OnDestroy(), OnPaint(), CAppScrnshotPreview::PaintOnDC(), Preview_CreateToolBar(), ImageModel::PushBlackAndWhite(), SaveDIBToFile(), serializeBMP(), CardWindow::SetBackImage(), CUIFBitmapDC::SetBitmap(), CMenuDeskBar::SetBitmap(), SetBitmapAndInfo(), SetDIBits(), START_TEST(), STATIC_PaintBitmapfn(), STATIC_SetBitmap(), STATIC_WindowProc(), StaticWndProc_common(), T1_DrawLabels(), Test_Bitmap(), Test_BitmapEntry(), Test_CompatBitmapEntry(), Test_Dibsection(), Test_DIBSectionEntry(), test_emf_BitBlt(), test_marshal_HBITMAP(), Test_PatBlt_Params(), TimeZonePageProc(), TOOLBAR_ReplaceBitmap(), and TrayIcon_GetProcessorUsageIcon().

TimeZoneListHead

PTIMEZONE_ENTRY TimeZoneListHead = NULL

Definition at line 29 of file timezone.c.

Referenced by DestroyTimeZoneList(), GetLargerTimeZoneEntry(), GetSelectedTimeZoneEntry(), RetrieveTimeZone(), and ShowTimeZoneList().

TimeZoneListTail

PTIMEZONE_ENTRY TimeZoneListTail = NULL

Definition at line 30 of file timezone.c.

Referenced by DestroyTimeZoneList(), and RetrieveTimeZone().