private static bool EnumCalendarInfo(string localeName, CalendarId calendarId, CalendarDataType dataType, CallbackContext callbackContext)
{
GCHandle context = GCHandle.Alloc(callbackContext);
try
{
return Interop.GlobalizationInterop.EnumCalendarInfo(EnumCalendarInfoCallback, localeName, calendarId, dataType, (IntPtr)context);
}
finally
{
context.Free();
}
}
internal static bool EnumCalendarInfo(string localeName, CalendarId calendarId, CalendarDataType dataType, out string[] calendarData)
{
calendarData = null;
CallbackContext callbackContext = new CallbackContext();
bool result = EnumCalendarInfo(localeName, calendarId, dataType, callbackContext);
if (result)
{
calendarData = callbackContext.Results.ToArray();
}
return result;
}
private static bool EnumDatePatterns(string localeName, CalendarId calendarId, CalendarDataType dataType, out string[] datePatterns)
{
datePatterns = null;
CallbackContext callbackContext = new CallbackContext();
callbackContext.DisallowDuplicates = true;
bool result = EnumCalendarInfo(localeName, calendarId, dataType, callbackContext);
if (result)
{
List<string> datePatternsList = callbackContext.Results;
datePatterns = new string[datePatternsList.Count];
for (int i = 0; i < datePatternsList.Count; i++)
{
datePatterns[i] = NormalizeDatePattern(datePatternsList[i]);
}
}
return result;
}
private static bool EnumMonthNames(string localeName, CalendarId calendarId, CalendarDataType dataType, out string[] monthNames)
{
monthNames = null;
CallbackContext callbackContext = new CallbackContext();
bool result = EnumCalendarInfo(localeName, calendarId, dataType, callbackContext);
if (result)
{
// the month-name arrays are expected to have 13 elements. If ICU only returns 12, add an
// extra empty string to fill the array.
if (callbackContext.Results.Count == 12)
{
callbackContext.Results.Add(string.Empty);
}
monthNames = callbackContext.Results.ToArray();
}
return result;
}
private int ChangeInternal(long dueTime, int period, WaitableTimerCallback callback, object state, bool resume)
{
if (period < 0)
{
throw new ArgumentException("period cannot be negative.");
}
// CallbackContext is used to avoid a race condition.
CallbackContext context = null;
Win32WaitableTimer.TimerAPCProc completionCallback = null;
if (callback != null)
{
context = new CallbackContext(callback, state);
completionCallback = context.TimerTick;
}
// Have to do this because SetWaitableTimer needs a reference
long due = dueTime;
bool rslt = Win32WaitableTimer.SetWaitableTimer(
SafeWaitHandle,
ref due,
period,
completionCallback,
IntPtr.Zero,
resume);
if (!rslt)
{
throw GetWin32Exception();
}
TimerCompletionCallback = context;
return Marshal.GetLastWin32Error();
}