void Register()
{
if (_key == null)
{
return;
}
var watchSubTree = NotifyFilter.Has(RegistryNotifyFilter.WatchSubTree);
var notifyFilter = NotifyFilter & ~RegistryNotifyFilter.WatchSubTree;
var result = NativeMethods.AdvApi32.RegNotifyChangeKeyValue(_key.Handle, watchSubTree, notifyFilter, _waitEvent.SafeWaitHandle, true);
if (NativeUtils.Failed(result))
{
throw new Win32Exception(result);
}
_registeredWaitHandle = ThreadPool.RegisterWaitForSingleObject(_waitEvent, _callback, null, -1, true);
}
public static bool TryGetData <T>(this IDataObject dataObject, string format, out T data) where T : struct
{
var formatEtc = CreateFormatEtc(format, TYMED.TYMED_HGLOBAL);
if (NativeUtils.Failed(dataObject.QueryGetData(ref formatEtc)))
{
data = default(T);
return(false);
}
dataObject.GetData(ref formatEtc, out var medium);
try
{
data = Marshal.PtrToStructure <T>(medium.unionmember);
return(true);
}
finally
{
NativeMethods.Ole32.ReleaseStgMedium(ref medium);
}
}