public static void Uninitialize(int instanceId)
{
// This method could be called by the GC finalizer thread. If it is then a direct call to the DDEML will fail since the DDEML is
// thread specific. A message will be posted to the DDEML thread instead.
lock (_Table)
{
if (_Table.ContainsKey(instanceId))
{
// Determine if the current thread matches what is in the table.
int threadId = (int)_Table[instanceId];
if (threadId == Ddeml.GetCurrentThreadId())
{
// Uninitialize the DDEML instance.
Ddeml.DdeUninitialize(instanceId);
}
else
{
// Post a message to the thread that needs to execute Ddeml.DdeUninitialize.
PostThreadMessage(threadId, WM_APP + 1, new IntPtr(instanceId), IntPtr.Zero);
}
// Remove the instance identifier from the table because it is no longer in use.
_Table.Remove(instanceId);
}
}
}
bool IMessageFilter.PreFilterMessage(ref Message m)
{
if (m.Msg == WM_APP + 1)
{
// Uninitialize the DDEML instance.
Ddeml.DdeUninitialize(m.WParam.ToInt32());
}
return false;
}
bool IMessageFilter.PreFilterMessage(ref Message m)
{
if (m.Msg == WM_APP + 1)
Ddeml.DdeUninitialize(m.WParam.ToInt32());
return false;
}