Enable automatic adjustment of daylight savings changes.

[reactos.git] / reactos / lib / cpl / timedate / timedate.c

diff --git a/reactos/lib/cpl/timedate/timedate.c b/reactos/lib/cpl/timedate/timedate.c
index 74fa262..eed20cf 100644 (file)
--- a/reactos/lib/cpl/timedate/timedate.c
+++ b/reactos/lib/cpl/timedate/timedate.c
@@ -16,7 +16,7 @@
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
-/* $Id: timedate.c,v 1.3 2004/11/08 10:33:08 ekohl Exp $
+/* $Id: timedate.c,v 1.4 2004/11/11 12:24:56 ekohl Exp $
  *
  * PROJECT:         ReactOS Timedate Control Panel
  * FILE:            lib/cpl/timedate/timedate.c
@@ -103,6 +103,17 @@ DateTimePageProc(HWND hwndDlg,
                 PropSheet_Changed(GetParent(hwndDlg), hwndDlg);
                 break;
 
+              case PSN_SETACTIVE:
+                /* FIXME: Update the time zone name */
+                return 0;
+
+              case PSN_APPLY:
+
+                /* FIXME: Set date and time */
+
+                SetWindowLong(hwndDlg, DWL_MSGRESULT, PSNRET_NOERROR);
+                return TRUE;
+
               default:
                 break;
             }
@@ -348,6 +359,113 @@ ShowTimeZoneList(HWND hwnd)
 }
 
 
+static VOID
+SetLocalTimeZone(HWND hwnd)
+{
+  TIME_ZONE_INFORMATION TimeZoneInformation;
+  PTIMEZONE_ENTRY Entry;
+  DWORD dwIndex;
+  DWORD i;
+
+  dwIndex = SendMessage(hwnd,
+                       CB_GETCURSEL,
+                       0,
+                       0);
+
+  i = 0;
+  Entry = TimeZoneListHead;
+  while (i < dwIndex)
+    {
+      if (Entry == NULL)
+       return;
+
+      i++;
+      Entry = Entry->Next;
+    }
+
+  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);
+}
+
+
+static VOID
+GetAutoDaylightInfo(HWND hwnd)
+{
+  HKEY hKey;
+
+  if (RegOpenKeyExW(HKEY_LOCAL_MACHINE,
+                   L"SYSTEM\\CurrentControlSet\\Control\\TimeZoneInformation",
+                   0,
+                   KEY_SET_VALUE,
+                   &hKey))
+    return;
+
+  if (RegQueryValueExW(hKey,
+                      L"DisableAutoDaylightTimeSet",
+                      NULL,
+                      NULL,
+                      NULL,
+                      NULL))
+    {
+      SendMessage(hwnd, BM_SETCHECK, (WPARAM)BST_CHECKED, 0);
+    }
+  else
+    {
+      SendMessage(hwnd, BM_SETCHECK, (WPARAM)BST_UNCHECKED, 0);
+    }
+
+  RegCloseKey(hKey);
+}
+
+
+static VOID
+SetAutoDaylightInfo(HWND hwnd)
+{
+  HKEY hKey;
+  DWORD dwValue = 1;
+
+  if (RegOpenKeyExW(HKEY_LOCAL_MACHINE,
+                   L"SYSTEM\\CurrentControlSet\\Control\\TimeZoneInformation",
+                   0,
+                   KEY_SET_VALUE,
+                   &hKey))
+    return;
+
+  if (SendMessage(hwnd, BM_GETCHECK, 0, 0) == BST_UNCHECKED)
+    {
+      RegSetValueExW(hKey,
+                    L"DisableAutoDaylightTimeSet",
+                    0,
+                    REG_DWORD,
+                    (LPBYTE)&dwValue,
+                    sizeof(DWORD));
+    }
+  else
+    {
+      RegDeleteKeyW(hKey,
+                   L"DisableAutoDaylightTimeSet");
+    }
+
+  RegCloseKey(hKey);
+}
+
+
 /* Property page dialog callback */
 INT_PTR CALLBACK
 TimeZonePageProc(HWND hwndDlg,
@@ -360,11 +478,12 @@ TimeZonePageProc(HWND hwndDlg,
     case WM_INITDIALOG:
       CreateTimeZoneList();
       ShowTimeZoneList(GetDlgItem(hwndDlg, IDC_TIMEZONELIST));
+      GetAutoDaylightInfo(GetDlgItem(hwndDlg, IDC_AUTODAYLIGHT));
       break;
 
     case WM_COMMAND:
       if ((LOWORD(wParam) == IDC_TIMEZONELIST && HIWORD(wParam) == CBN_SELCHANGE) ||
-          (LOWORD(wParam) == IDC_AUTOADJUST && HIWORD(wParam) == BN_CLICKED))
+          (LOWORD(wParam) == IDC_AUTODAYLIGHT && HIWORD(wParam) == BN_CLICKED))
         {
           /* Enable the 'Apply' button */
           PropSheet_Changed(GetParent(hwndDlg), hwndDlg);
@@ -374,6 +493,25 @@ TimeZonePageProc(HWND hwndDlg,
     case WM_DESTROY:
       DestroyTimeZoneList();
       break;
+
+    case WM_NOTIFY:
+      {
+          LPNMHDR lpnm = (LPNMHDR)lParam;
+
+          switch (lpnm->code)
+            {
+              case PSN_APPLY:
+                SetAutoDaylightInfo(GetDlgItem(hwndDlg, IDC_AUTODAYLIGHT));
+                SetLocalTimeZone(GetDlgItem(hwndDlg, IDC_TIMEZONELIST));
+                SetWindowLong(hwndDlg, DWL_MSGRESULT, PSNRET_NOERROR);
+                return TRUE;
+
+              default:
+                break;
+            }
+
+      }
+      break;
   }
 
   return FALSE;