bool InternalOpen(object form, string topicName)
{
bool result = false;
Connection conn;
if (m_connections.TryGetValue(form, out conn))
{
return(true);
}
IntPtr hszService = DDEML.DdeCreateStringHandle(m_idInst, "Excel\0", DDEML.CP_WINANSI);
IntPtr hszTopic = DDEML.DdeCreateStringHandle(m_idInst, topicName, DDEML.CP_WINANSI);
// Подключаемся к разделу
IntPtr hConv = DDEML.DdeConnect(m_idInst, hszService, hszTopic, (IntPtr)null);
if (hConv != IntPtr.Zero)
{
m_connections.TryAdd(form, new Connection(topicName, hConv));
result = true;
}
DDEML.DdeFreeStringHandle(m_idInst, hszTopic);
DDEML.DdeFreeStringHandle(m_idInst, hszService);
return(result);
}
public void Dispose()
{
if (m_idInst != 0)
{
m_terminate.Set();
m_complete.Dispose();
m_terminate.Dispose();
foreach (var conn in m_connections.ToList())
{
Connection c;
m_connections.TryRemove(conn.Key, out c);
if (conn.Key is IDDESender)
{
((IDDESender)conn.Key).OnComplete(DDEAction.Close, null, null);
}
if (conn.Key is IDisposable)
{
((IDisposable)conn.Key).Dispose();
}
DDEML.DdeDisconnect(conn.Value.Conv);
}
DDEML.DdeUninitialize(m_idInst);
}
}
void InternalPokeData(object form, string itemName, string strData)
{
Connection conn;
if (m_connections.TryGetValue(form, out conn))
{
IntPtr hszItem = DDEML.DdeCreateStringHandle(m_idInst, itemName, DDEML.CP_WINANSI);
byte [] data = Encoding.GetBytes(strData);
IntPtr hszDat = DDEML.DdeCreateDataHandle(m_idInst, data, data.Length, 0, hszItem, DDEML.CF_TEXT, 0);
uint returnFlags = 0;
DDEML.DdeClientTransaction(hszDat, -1, conn.Conv, hszItem, DDEML.CF_TEXT, DDEML.XTYP_POKE, Timeout.Infinite, ref returnFlags);
DDEML.DdeFreeStringHandle(m_idInst, hszItem);
}
}
void InternalClose(object form)
{
Connection conn;
if (m_connections.TryGetValue(form, out conn))
{
DDEML.DdeDisconnect(conn.Conv);
m_connections.TryRemove(form, out conn);
IDDESender sender = form as IDDESender;
if (sender != null)
{
sender.OnComplete(DDEAction.Close, conn.Name, null);
}
}
}
void InternalExecuteMacro(object form, string strText)
{
Connection conn;
if (m_connections.TryGetValue(form, out conn))
{
uint idErr = 0;
byte[] data = Encoding.GetBytes(strText);
IntPtr hszDat = DDEML.DdeCreateDataHandle(m_idInst, data, data.Length, 0, IntPtr.Zero, DDEML.CF_TEXT, 0);
if (hszDat == IntPtr.Zero)
{
idErr = DDEML.DdeGetLastError(m_idInst);
}
uint returnFlags = 0;
DDEML.DdeClientTransaction(hszDat, -1, conn.Conv, IntPtr.Zero, DDEML.CF_TEXT, DDEML.XTYP_EXECUTE, Timeout.Infinite, ref returnFlags);
}
}
public ExcelDDEManager()
{
System = new object();
Encoding = Encoding.GetEncoding("windows-1251");
m_connections = new ConcurrentDictionary <object, Connection>();
m_commands = new ConcurrentQueue <Command>();
m_terminate = new ManualResetEvent(false);
m_complete = new AutoResetEvent(false);
// запуск потока экспорта DDE, все системные вызовы DDE должны делаться в контексте одного потока!
m_threadForProcess = CoreHelper.GetThread(() =>
{
try
{
// подключение и все дальнейшие команды dde должны выполнятся в одном и том же потоке!
m_DDECallBack = new DDEML.DDECallBackDelegate(DDECallBack);
DDEML.DdeInitialize(ref m_idInst, m_DDECallBack, DDEML.APPCMD_CLIENTONLY, 0);
do
{
RefreshData();
} while (!m_terminate.WaitOne(AppConfig.Common.ExcelExportRefreshDelay));
}
catch (Exception e)
{
LogFileManager.AddError("DDE export", e);
}
}, true, "Excel DDE processing");
m_threadForProcess.SetApartmentState(ApartmentState.STA);
m_threadForProcess.Start();
//DDECompletitionManager.Instance.Post(() =>
// {
// m_DDECallBack = new DDEML.DDECallBackDelegate(DDECallBack);
// DDEML.DdeInitialize(ref m_idInst, m_DDECallBack, DDEML.APPCLASS_STANDARD, 0);
// });
}
public void InternalRequest(object form, string itemName, out byte[] data)
{
Connection conn;
data = new byte[0];
if (m_connections.TryGetValue(form, out conn))
{
IntPtr hszItem = DDEML.DdeCreateStringHandle(m_idInst, itemName, DDEML.CP_WINANSI);
uint returnFlags = 0;
IntPtr dataHandle = DDEML.DdeClientTransaction(IntPtr.Zero, 0, conn.Conv, hszItem, DDEML.CF_TEXT, DDEML.XTYP_REQUEST, 1000, ref returnFlags);
DDEML.DdeFreeStringHandle(m_idInst, hszItem);
if (dataHandle != IntPtr.Zero)
{
uint length = DDEML.DdeGetData(dataHandle, null, 0, 0);
data = new byte[length];
length = DDEML.DdeGetData(dataHandle, data, (uint)data.Length, 0);
// Free the data handle created by the server.
DDEML.DdeFreeDataHandle(dataHandle);
}
}
}