added DoSetNativeFontInfo() to avoid virtual function hiding

[wxWidgets.git] / src / msw / dde.cpp

diff --git a/src/msw/dde.cpp b/src/msw/dde.cpp
index 6968b94312c94ec3bfec819ce36986c22516ce77..a03da5030b678a5888b9f6c89912d218696efd28 100644 (file)
--- a/src/msw/dde.cpp
+++ b/src/msw/dde.cpp
@@ -50,6 +50,24 @@
     #include "wx/msw/gnuwin32/extra.h"
 #endif
 
     #include "wx/msw/gnuwin32/extra.h"
 #endif
 

+// some compilers headers don't define this one (mingw32)
+#ifndef DMLERR_NO_ERROR
+    #define DMLERR_NO_ERROR (0)
+
+    // this one is also missing from some mingw32 headers, but there is no way
+    // to test for it (I know of) - the test for DMLERR_NO_ERROR works for me,
+    // but is surely not the right thing to do
+    extern "C"
+    HDDEDATA STDCALL DdeClientTransaction(LPBYTE pData,
+                                          DWORD cbData,
+                                          HCONV hConv,
+                                          HSZ hszItem,
+                                          UINT wFmt,
+                                          UINT wType,
+                                          DWORD dwTimeout,
+                                          LPDWORD pdwResult);
+#endif // no DMLERR_NO_ERROR
+

 // ----------------------------------------------------------------------------
 // macros and constants
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // macros and constants
 // ----------------------------------------------------------------------------


@@ -106,14 +124,18 @@ static void DDELogError(const wxString& s, UINT error = DMLERR_NO_ERROR);
 
 static DWORD DDEIdInst = 0L;
 static wxDDEConnection *DDECurrentlyConnecting = NULL;
 
 static DWORD DDEIdInst = 0L;
 static wxDDEConnection *DDECurrentlyConnecting = NULL;

-

 static wxList wxAtomTable(wxKEY_STRING);
 static wxList wxAtomTable(wxKEY_STRING);

-static wxList wxDDEClientObjects;
-static wxList wxDDEServerObjects;

 
 

-char *DDEDefaultIPCBuffer = NULL;
-int DDEDefaultIPCBufferSize = 0;
-static bool DDEInitialized = FALSE;
+#include "wx/listimpl.cpp"
+
+WX_DEFINE_LIST(wxDDEClientList);
+WX_DEFINE_LIST(wxDDEServerList);
+WX_DEFINE_LIST(wxDDEConnectionList);
+
+static wxDDEClientList wxDDEClientObjects;
+static wxDDEServerList wxDDEServerObjects;
+
+static bool DDEInitialized = false;

 
 // ----------------------------------------------------------------------------
 // private classes
 
 // ----------------------------------------------------------------------------
 // private classes


@@ -126,7 +148,7 @@ class wxDDEModule : public wxModule
 {
 public:
     wxDDEModule() {}
 {
 public:
     wxDDEModule() {}

-    bool OnInit() { return TRUE; }
+    bool OnInit() { return true; }

     void OnExit() { wxDDECleanUp(); }
 
 private:
     void OnExit() { wxDDECleanUp(); }
 
 private:


@@ -164,20 +186,28 @@ extern void wxDDEInitialize()
         }
         else
         {
         }
         else
         {

-            DDEInitialized = TRUE;
+            DDEInitialized = true;

         }
     }
 }
 
 void wxDDECleanUp()
 {
         }
     }
 }
 
 void wxDDECleanUp()
 {

+    wxDDEClientObjects.DeleteContents(true);
+    wxDDEClientObjects.Clear();
+    wxDDEClientObjects.DeleteContents(false);
+
+    wxDDEServerObjects.DeleteContents(true);
+    wxDDEServerObjects.Clear();
+    wxDDEServerObjects.DeleteContents(false);
+
+    wxAtomTable.Clear();
+

     if ( DDEIdInst != 0 )
     {
         DdeUninitialize(DDEIdInst);
         DDEIdInst = 0;
     }
     if ( DDEIdInst != 0 )
     {
         DdeUninitialize(DDEIdInst);
         DDEIdInst = 0;
     }

-
-    delete [] DDEDefaultIPCBuffer;

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -187,64 +217,75 @@ void wxDDECleanUp()
 // Global find connection
 static wxDDEConnection *DDEFindConnection(HCONV hConv)
 {
 // Global find connection
 static wxDDEConnection *DDEFindConnection(HCONV hConv)
 {

-  wxNode *node = wxDDEServerObjects.First();
-  wxDDEConnection *found = NULL;
-  while (node && !found)
-  {
-    wxDDEServer *object = (wxDDEServer *)node->Data();
-    found = object->FindConnection((WXHCONV) hConv);
-    node = node->Next();
-  }
-  if (found)
-      return found;
-
-  node = wxDDEClientObjects.First();
-  while (node && !found)
-  {
-    wxDDEClient *object = (wxDDEClient *)node->Data();
-    found = object->FindConnection((WXHCONV) hConv);
-    node = node->Next();
-  }
-  return found;
+    wxDDEServerList::Node *serverNode = wxDDEServerObjects.GetFirst();
+    wxDDEConnection *found = NULL;
+    while (serverNode && !found)
+    {
+        wxDDEServer *object = serverNode->GetData();
+        found = object->FindConnection((WXHCONV) hConv);
+        serverNode = serverNode->GetNext();
+    }
+
+    if (found)
+    {
+        return found;
+    }
+
+    wxDDEClientList::Node *clientNode = wxDDEClientObjects.GetFirst();
+    while (clientNode && !found)
+    {
+        wxDDEClient *object = clientNode->GetData();
+        found = object->FindConnection((WXHCONV) hConv);
+        clientNode = clientNode->GetNext();
+    }
+    return found;

 }
 
 // Global delete connection
 static void DDEDeleteConnection(HCONV hConv)
 {
 }
 
 // Global delete connection
 static void DDEDeleteConnection(HCONV hConv)
 {

-  wxNode *node = wxDDEServerObjects.First();
-  bool found = FALSE;
-  while (node && !found)
-  {
-    wxDDEServer *object = (wxDDEServer *)node->Data();
-    found = object->DeleteConnection((WXHCONV) hConv);
-    node = node->Next();
-  }
-  if (found)
-    return;
-
-  node = wxDDEClientObjects.First();
-  while (node && !found)
-  {
-    wxDDEClient *object = (wxDDEClient *)node->Data();
-    found = object->DeleteConnection((WXHCONV) hConv);
-    node = node->Next();
-  }
+    wxDDEServerList::Node *serverNode = wxDDEServerObjects.GetFirst();
+    bool found = false;
+    while (serverNode && !found)
+    {
+        wxDDEServer *object = serverNode->GetData();
+        found = object->DeleteConnection((WXHCONV) hConv);
+        serverNode = serverNode->GetNext();
+    }
+    if (found)
+    {
+        return;
+    }
+
+    wxDDEClientList::Node *clientNode = wxDDEClientObjects.GetFirst();
+    while (clientNode && !found)
+    {
+        wxDDEClient *object = clientNode->GetData();
+        found = object->DeleteConnection((WXHCONV) hConv);
+        clientNode = clientNode->GetNext();
+    }

 }
 
 // Find a server from a service name
 static wxDDEServer *DDEFindServer(const wxString& s)
 {
 }
 
 // Find a server from a service name
 static wxDDEServer *DDEFindServer(const wxString& s)
 {

-  wxNode *node = wxDDEServerObjects.First();
-  wxDDEServer *found = NULL;
-  while (node && !found)
-  {
-    wxDDEServer *object = (wxDDEServer *)node->Data();
+    wxDDEServerList::Node *node = wxDDEServerObjects.GetFirst();
+    wxDDEServer *found = NULL;
+    while (node && !found)
+    {
+        wxDDEServer *object = node->GetData();
+
+        if (object->GetServiceName() == s)
+        {
+            found = object;
+        }
+        else
+        {
+            node = node->GetNext();
+        }
+    }

 
 

-    if (object->GetServiceName() == s)
-      found = object;
-    else node = node->Next();
-  }
-  return found;
+    return found;

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -267,10 +308,10 @@ bool wxDDEServer::Create(const wxString& server)
         DDELogError(wxString::Format(_("Failed to register DDE server '%s'"),
                                      server.c_str()));
 
         DDELogError(wxString::Format(_("Failed to register DDE server '%s'"),
                                      server.c_str()));
 

-        return FALSE;
+        return false;

     }
 
     }
 

-    return TRUE;
+    return true;

 }
 
 wxDDEServer::~wxDDEServer()
 }
 
 wxDDEServer::~wxDDEServer()


@@ -287,21 +328,22 @@ wxDDEServer::~wxDDEServer()
 
     wxDDEServerObjects.DeleteObject(this);
 
 
     wxDDEServerObjects.DeleteObject(this);
 

-    wxNode *node = m_connections.First();
+    wxDDEConnectionList::Node *node = m_connections.GetFirst();

     while (node)
     {
     while (node)
     {

-        wxDDEConnection *connection = (wxDDEConnection *)node->Data();
-        wxNode *next = node->Next();
+        wxDDEConnection *connection = node->GetData();
+        wxDDEConnectionList::Node *next = node->GetNext();
+        connection->SetConnected(false);

         connection->OnDisconnect(); // May delete the node implicitly
         node = next;
     }
 
     // If any left after this, delete them
         connection->OnDisconnect(); // May delete the node implicitly
         node = next;
     }
 
     // If any left after this, delete them

-    node = m_connections.First();
+    node = m_connections.GetFirst();

     while (node)
     {
     while (node)
     {

-        wxDDEConnection *connection = (wxDDEConnection *)node->Data();
-        wxNode *next = node->Next();
+        wxDDEConnection *connection = node->GetData();
+        wxDDEConnectionList::Node *next = node->GetNext();

         delete connection;
         node = next;
     }
         delete connection;
         node = next;
     }


@@ -314,14 +356,14 @@ wxConnectionBase *wxDDEServer::OnAcceptConnection(const wxString& /* topic */)
 
 wxDDEConnection *wxDDEServer::FindConnection(WXHCONV conv)
 {
 
 wxDDEConnection *wxDDEServer::FindConnection(WXHCONV conv)
 {

-    wxNode *node = m_connections.First();
+    wxDDEConnectionList::Node *node = m_connections.GetFirst();

     wxDDEConnection *found = NULL;
     while (node && !found)
     {
     wxDDEConnection *found = NULL;
     while (node && !found)
     {

-        wxDDEConnection *connection = (wxDDEConnection *)node->Data();
+        wxDDEConnection *connection = node->GetData();

         if (connection->m_hConv == conv)
             found = connection;
         if (connection->m_hConv == conv)
             found = connection;

-        else node = node->Next();
+        else node = node->GetNext();

     }
     return found;
 }
     }
     return found;
 }


@@ -329,17 +371,20 @@ wxDDEConnection *wxDDEServer::FindConnection(WXHCONV conv)
 // Only delete the entry in the map, not the actual connection
 bool wxDDEServer::DeleteConnection(WXHCONV conv)
 {
 // Only delete the entry in the map, not the actual connection
 bool wxDDEServer::DeleteConnection(WXHCONV conv)
 {

-    wxNode *node = m_connections.First();
-    bool found = FALSE;
+    wxDDEConnectionList::Node *node = m_connections.GetFirst();
+    bool found = false;

     while (node && !found)
     {
     while (node && !found)
     {

-        wxDDEConnection *connection = (wxDDEConnection *)node->Data();
+        wxDDEConnection *connection = node->GetData();

         if (connection->m_hConv == conv)
         {
         if (connection->m_hConv == conv)
         {

-            found = TRUE;
+            found = true;

             delete node;
         }
             delete node;
         }

-        else node = node->Next();
+        else
+        {
+            node = node->GetNext();
+        }

     }
     return found;
 }
     }
     return found;
 }


@@ -358,18 +403,18 @@ wxDDEClient::wxDDEClient()
 wxDDEClient::~wxDDEClient()
 {
     wxDDEClientObjects.DeleteObject(this);
 wxDDEClient::~wxDDEClient()
 {
     wxDDEClientObjects.DeleteObject(this);

-    wxNode *node = m_connections.First();
+    wxDDEConnectionList::Node *node = m_connections.GetFirst();

     while (node)
     {
     while (node)
     {

-        wxDDEConnection *connection = (wxDDEConnection *)node->Data();
+        wxDDEConnection *connection = node->GetData();

         delete connection;  // Deletes the node implicitly (see ~wxDDEConnection)
         delete connection;  // Deletes the node implicitly (see ~wxDDEConnection)

-        node = m_connections.First();
+        node = m_connections.GetFirst();

     }
 }
 
 bool wxDDEClient::ValidHost(const wxString& /* host */)
 {
     }
 }
 
 bool wxDDEClient::ValidHost(const wxString& /* host */)
 {

-    return TRUE;
+    return true;

 }
 
 wxConnectionBase *wxDDEClient::MakeConnection(const wxString& WXUNUSED(host),
 }
 
 wxConnectionBase *wxDDEClient::MakeConnection(const wxString& WXUNUSED(host),


@@ -380,8 +425,7 @@ wxConnectionBase *wxDDEClient::MakeConnection(const wxString& WXUNUSED(host),
                              (PCONVCONTEXT)NULL);
     if ( !hConv )
     {
                              (PCONVCONTEXT)NULL);
     if ( !hConv )
     {

-        DDELogError(wxString::Format(_("Failed to create connection to "
-                                       "server '%s' on topic '%s'"),
+        DDELogError(wxString::Format(_("Failed to create connection to server '%s' on topic '%s'"),

                                      server.c_str(), topic.c_str()));
     }
     else
                                      server.c_str(), topic.c_str()));
     }
     else


@@ -407,14 +451,14 @@ wxConnectionBase *wxDDEClient::OnMakeConnection()
 
 wxDDEConnection *wxDDEClient::FindConnection(WXHCONV conv)
 {
 
 wxDDEConnection *wxDDEClient::FindConnection(WXHCONV conv)
 {

-    wxNode *node = m_connections.First();
+    wxDDEConnectionList::Node *node = m_connections.GetFirst();

     wxDDEConnection *found = NULL;
     while (node && !found)
     {
     wxDDEConnection *found = NULL;
     while (node && !found)
     {

-        wxDDEConnection *connection = (wxDDEConnection *)node->Data();
+        wxDDEConnection *connection = node->GetData();

         if (connection->m_hConv == conv)
             found = connection;
         if (connection->m_hConv == conv)
             found = connection;

-        else node = node->Next();
+        else node = node->GetNext();

     }
     return found;
 }
     }
     return found;
 }


@@ -422,17 +466,17 @@ wxDDEConnection *wxDDEClient::FindConnection(WXHCONV conv)
 // Only delete the entry in the map, not the actual connection
 bool wxDDEClient::DeleteConnection(WXHCONV conv)
 {
 // Only delete the entry in the map, not the actual connection
 bool wxDDEClient::DeleteConnection(WXHCONV conv)
 {

-    wxNode *node = m_connections.First();
-    bool found = FALSE;
+    wxDDEConnectionList::Node *node = m_connections.GetFirst();
+    bool found = false;

     while (node && !found)
     {
     while (node && !found)
     {

-        wxDDEConnection *connection = (wxDDEConnection *)node->Data();
+        wxDDEConnection *connection = node->GetData();

         if (connection->m_hConv == conv)
         {
         if (connection->m_hConv == conv)
         {

-            found = TRUE;
+            found = true;

             delete node;
         }
             delete node;
         }

-        else node = node->Next();
+        else node = node->GetNext();

     }
     return found;
 }
     }
     return found;
 }


@@ -441,21 +485,9 @@ bool wxDDEClient::DeleteConnection(WXHCONV conv)
 // wxDDEConnection
 // ----------------------------------------------------------------------------
 
 // wxDDEConnection
 // ----------------------------------------------------------------------------
 

-wxDDEConnection::wxDDEConnection(char *buffer, int size)
+wxDDEConnection::wxDDEConnection(wxChar *buffer, int size)
+     : wxConnectionBase(buffer, size)

 {
 {

-    if (buffer == NULL)
-    {
-        if (DDEDefaultIPCBuffer == NULL)
-            DDEDefaultIPCBuffer = new char[DDEDefaultIPCBufferSize];
-        m_bufPtr = DDEDefaultIPCBuffer;
-        m_bufSize = DDEDefaultIPCBufferSize;
-    }
-    else
-    {
-        m_bufPtr = buffer;
-        m_bufSize = size;
-    }
-

     m_client = NULL;
     m_server = NULL;
 
     m_client = NULL;
     m_server = NULL;
 


@@ -464,20 +496,17 @@ wxDDEConnection::wxDDEConnection(char *buffer, int size)
 }
 
 wxDDEConnection::wxDDEConnection()
 }
 
 wxDDEConnection::wxDDEConnection()

+     : wxConnectionBase()

 {
     m_hConv = 0;
     m_sendingData = NULL;
     m_server = NULL;
     m_client = NULL;
 {
     m_hConv = 0;
     m_sendingData = NULL;
     m_server = NULL;
     m_client = NULL;

-    if (DDEDefaultIPCBuffer == NULL)
-        DDEDefaultIPCBuffer = new char[DDEDefaultIPCBufferSize];
-
-    m_bufPtr = DDEDefaultIPCBuffer;
-    m_bufSize = DDEDefaultIPCBufferSize;

 }
 
 wxDDEConnection::~wxDDEConnection()
 {
 }
 
 wxDDEConnection::~wxDDEConnection()
 {

+    Disconnect();

     if (m_server)
         m_server->GetConnections().DeleteObject(this);
     else
     if (m_server)
         m_server->GetConnections().DeleteObject(this);
     else


@@ -487,6 +516,9 @@ wxDDEConnection::~wxDDEConnection()
 // Calls that CLIENT can make
 bool wxDDEConnection::Disconnect()
 {
 // Calls that CLIENT can make
 bool wxDDEConnection::Disconnect()
 {

+    if ( !GetConnected() )
+        return true;
+

     DDEDeleteConnection(GetHConv());
 
     bool ok = DdeDisconnect(GetHConv()) != 0;
     DDEDeleteConnection(GetHConv());
 
     bool ok = DdeDisconnect(GetHConv()) != 0;


@@ -495,6 +527,8 @@ bool wxDDEConnection::Disconnect()
         DDELogError(_T("Failed to disconnect from DDE server gracefully"));
     }
 
         DDELogError(_T("Failed to disconnect from DDE server gracefully"));
     }
 

+    SetConnected( false );  // so we don't try and disconnect again
+

     return ok;
 }
 
     return ok;
 }
 


@@ -513,6 +547,7 @@ bool wxDDEConnection::Execute(const wxChar *data, int size, wxIPCFormat format)
                                     XTYP_EXECUTE,
                                     DDE_TIMEOUT,
                                     &result) != 0;
                                     XTYP_EXECUTE,
                                     DDE_TIMEOUT,
                                     &result) != 0;

+

     if ( !ok )
     {
         DDELogError(_T("DDE execute request failed"));
     if ( !ok )
     {
         DDELogError(_T("DDE execute request failed"));


@@ -521,9 +556,10 @@ bool wxDDEConnection::Execute(const wxChar *data, int size, wxIPCFormat format)
     return ok;
 }
 
     return ok;
 }
 

-char *wxDDEConnection::Request(const wxString& item, int *size, wxIPCFormat format)
+wxChar *wxDDEConnection::Request(const wxString& item, int *size, wxIPCFormat format)

 {
     DWORD result;
 {
     DWORD result;

+

     HSZ atom = DDEGetAtom(item);
 
     HDDEDATA returned_data = DdeClientTransaction(NULL, 0,
     HSZ atom = DDEGetAtom(item);
 
     HDDEDATA returned_data = DdeClientTransaction(NULL, 0,


@@ -539,14 +575,19 @@ char *wxDDEConnection::Request(const wxString& item, int *size, wxIPCFormat form
         return NULL;
     }
 
         return NULL;
     }
 

-    DWORD len = DdeGetData(returned_data, (LPBYTE)m_bufPtr, m_bufSize, 0);
+    DWORD len = DdeGetData(returned_data, NULL, 0, 0);
+
+    wxChar *data = GetBufferAtLeast( len );
+    wxASSERT_MSG(data != NULL,
+                 _T("Buffer too small in wxDDEConnection::Request") );
+    DdeGetData(returned_data, (LPBYTE)data, len, 0);

 
     DdeFreeDataHandle(returned_data);
 
     if (size)
         *size = (int)len;
 
 
     DdeFreeDataHandle(returned_data);
 
     if (size)
         *size = (int)len;
 

-    return m_bufPtr;
+    return data;

 }
 
 bool wxDDEConnection::Poke(const wxString& item, wxChar *data, int size, wxIPCFormat format)
 }
 
 bool wxDDEConnection::Poke(const wxString& item, wxChar *data, int size, wxIPCFormat format)


@@ -623,7 +664,7 @@ bool wxDDEConnection::Advise(const wxString& item,
 
     HSZ item_atom = DDEGetAtom(item);
     HSZ topic_atom = DDEGetAtom(m_topicName);
 
     HSZ item_atom = DDEGetAtom(item);
     HSZ topic_atom = DDEGetAtom(m_topicName);

-    m_sendingData = data;
+    m_sendingData = data;  // mrf: potential for scope problems here?

     m_dataSize = size;
     m_dataType = format;
 
     m_dataSize = size;
     m_dataType = format;
 


@@ -639,7 +680,7 @@ bool wxDDEConnection::Advise(const wxString& item,
 bool wxDDEConnection::OnDisconnect()
 {
     delete this;
 bool wxDDEConnection::OnDisconnect()
 {
     delete this;

-    return TRUE;
+    return true;

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -676,7 +717,7 @@ _DDECallback(WORD wType,
                         connection->m_hConv = 0;
                         connection->m_topicName = topic;
                         DDECurrentlyConnecting = connection;
                         connection->m_hConv = 0;
                         connection->m_topicName = topic;
                         DDECurrentlyConnecting = connection;

-                        return (DDERETURN)(DWORD)TRUE;
+                        return (DDERETURN)(DWORD)true;

                     }
                 }
                 break;
                     }
                 }
                 break;


@@ -688,7 +729,7 @@ _DDECallback(WORD wType,
                 {
                     DDECurrentlyConnecting->m_hConv = (WXHCONV) hConv;
                     DDECurrentlyConnecting = NULL;
                 {
                     DDECurrentlyConnecting->m_hConv = (WXHCONV) hConv;
                     DDECurrentlyConnecting = NULL;

-                    return (DDERETURN)(DWORD)TRUE;
+                    return (DDERETURN)(DWORD)true;

                 }
                 break;
             }
                 }
                 break;
             }


@@ -696,10 +737,14 @@ _DDECallback(WORD wType,
         case XTYP_DISCONNECT:
             {
                 wxDDEConnection *connection = DDEFindConnection(hConv);
         case XTYP_DISCONNECT:
             {
                 wxDDEConnection *connection = DDEFindConnection(hConv);

-                if (connection && connection->OnDisconnect())
+                if (connection)

                 {
                 {

-                    DDEDeleteConnection(hConv);  // Delete mapping: hConv => connection
-                    return (DDERETURN)(DWORD)TRUE;
+                    connection->SetConnected( false );
+                    if (connection->OnDisconnect())
+                    {
+                        DDEDeleteConnection(hConv);  // Delete mapping: hConv => connection
+                        return (DDERETURN)(DWORD)true;
+                    }

                 }
                 break;
             }
                 }
                 break;
             }


@@ -710,13 +755,18 @@ _DDECallback(WORD wType,
 
                 if (connection)
                 {
 
                 if (connection)
                 {

-                    DWORD len = DdeGetData(hData,
-                                           (LPBYTE)connection->m_bufPtr,
-                                           connection->m_bufSize,
-                                           0);
+                    DWORD len = DdeGetData(hData, NULL, 0, 0);
+
+                    wxChar *data = connection->GetBufferAtLeast( len );
+                    wxASSERT_MSG(data != NULL,
+                                 _T("Buffer too small in _DDECallback (XTYP_EXECUTE)") );
+
+                    DdeGetData(hData, (LPBYTE)data, len, 0);
+

                     DdeFreeDataHandle(hData);
                     DdeFreeDataHandle(hData);

+

                     if ( connection->OnExecute(connection->m_topicName,
                     if ( connection->OnExecute(connection->m_topicName,

-                                               connection->m_bufPtr,
+                                               data,

                                                (int)len,
                                                (wxIPCFormat) wFmt) )
                     {
                                                (int)len,
                                                (wxIPCFormat) wFmt) )
                     {


@@ -736,14 +786,14 @@ _DDECallback(WORD wType,
                     wxString item_name = DDEStringFromAtom(hsz2);
 
                     int user_size = -1;
                     wxString item_name = DDEStringFromAtom(hsz2);
 
                     int user_size = -1;

-                    char *data = connection->OnRequest(connection->m_topicName,
+                    wxChar *data = connection->OnRequest(connection->m_topicName,

                                                        item_name,
                                                        &user_size,
                                                        (wxIPCFormat) wFmt);
                     if (data)
                     {
                         if (user_size < 0)
                                                        item_name,
                                                        &user_size,
                                                        (wxIPCFormat) wFmt);
                     if (data)
                     {
                         if (user_size < 0)

-                            user_size = wxStrlen(data) + 1;
+                            user_size = wxStrlen((wxChar*)data) + 1;

 
                         HDDEDATA handle = DdeCreateDataHandle(DDEIdInst,
                                                               (LPBYTE)data,
 
                         HDDEDATA handle = DdeCreateDataHandle(DDEIdInst,
                                                               (LPBYTE)data,


@@ -766,15 +816,19 @@ _DDECallback(WORD wType,
                 {
                     wxString item_name = DDEStringFromAtom(hsz2);
 
                 {
                     wxString item_name = DDEStringFromAtom(hsz2);
 

-                    DWORD len = DdeGetData(hData,
-                                           (LPBYTE)connection->m_bufPtr,
-                                           connection->m_bufSize,
-                                           0);
+                    DWORD len = DdeGetData(hData, NULL, 0, 0);
+
+                    wxChar *data = connection->GetBufferAtLeast( len );
+                    wxASSERT_MSG(data != NULL,
+                                 _T("Buffer too small in _DDECallback (XTYP_EXECUTE)") );
+
+                    DdeGetData(hData, (LPBYTE)data, len, 0);
+

                     DdeFreeDataHandle(hData);
 
                     connection->OnPoke(connection->m_topicName,
                                        item_name,
                     DdeFreeDataHandle(hData);
 
                     connection->OnPoke(connection->m_topicName,
                                        item_name,

-                                       connection->m_bufPtr,
+                                       data,

                                        (int)len,
                                        (wxIPCFormat) wFmt);
 
                                        (int)len,
                                        (wxIPCFormat) wFmt);
 


@@ -849,14 +903,18 @@ _DDECallback(WORD wType,
                 {
                     wxString item_name = DDEStringFromAtom(hsz2);
 
                 {
                     wxString item_name = DDEStringFromAtom(hsz2);
 

-                    DWORD len = DdeGetData(hData,
-                                           (LPBYTE)connection->m_bufPtr,
-                                           connection->m_bufSize,
-                                           0);
+                    DWORD len = DdeGetData(hData, NULL, 0, 0);
+
+                    wxChar *data = connection->GetBufferAtLeast( len );
+                    wxASSERT_MSG(data != NULL,
+                                 _T("Buffer too small in _DDECallback (XTYP_ADVDATA)") );
+
+                    DdeGetData(hData, (LPBYTE)data, len, 0);
+

                     DdeFreeDataHandle(hData);
                     if ( connection->OnAdvise(connection->m_topicName,
                                               item_name,
                     DdeFreeDataHandle(hData);
                     if ( connection->OnAdvise(connection->m_topicName,
                                               item_name,

-                                              connection->m_bufPtr,
+                                              data,

                                               (int)len,
                                               (wxIPCFormat) wFmt) )
                     {
                                               (int)len,
                                               (wxIPCFormat) wFmt) )
                     {


@@ -887,11 +945,11 @@ static HSZ DDEGetAtom(const wxString& string)
 {
     wxNode *node = wxAtomTable.Find(string);
     if (node)
 {
     wxNode *node = wxAtomTable.Find(string);
     if (node)

-        return (HSZ)node->Data();
+        return (HSZ)node->GetData();

     else
     {
         DDEAddAtom(string);
     else
     {
         DDEAddAtom(string);

-        return (HSZ)(wxAtomTable.Find(string)->Data());
+        return (HSZ)(wxAtomTable.Find(string)->GetData());

     }
 }
 
     }
 }
 


@@ -900,7 +958,7 @@ static HSZ DDEAtomFromString(const wxString& s)
 {
     wxASSERT_MSG( DDEIdInst, _T("DDE not initialized") );
 
 {
     wxASSERT_MSG( DDEIdInst, _T("DDE not initialized") );
 

-    HSZ hsz = DdeCreateStringHandle(DDEIdInst, (char*) s.c_str(), DDE_CP);
+    HSZ hsz = DdeCreateStringHandle(DDEIdInst, (wxChar*) s.c_str(), DDE_CP);

     if ( !hsz )
     {
         DDELogError(_("Failed to create DDE string"));
     if ( !hsz )
     {
         DDELogError(_("Failed to create DDE string"));


@@ -954,10 +1012,10 @@ static wxString DDEGetErrorMsg(UINT error)
             err = _("a request for a synchronous data transaction has timed out.");
             break;
         case DMLERR_DLL_NOT_INITIALIZED:
             err = _("a request for a synchronous data transaction has timed out.");
             break;
         case DMLERR_DLL_NOT_INITIALIZED:

-            err = _("a DDEML function was called without first calling the DdeInitialize function,\n\ror an invalid instance identifier\n\rwas passed to a DDEML function.");
+            err = _("a DDEML function was called without first calling the DdeInitialize function,\nor an invalid instance identifier\nwas passed to a DDEML function.");

             break;
         case DMLERR_DLL_USAGE:
             break;
         case DMLERR_DLL_USAGE:

-            err = _("an application initialized as APPCLASS_MONITOR has\n\rattempted to perform a DDE transaction,\n\ror an application initialized as APPCMD_CLIENTONLY has \n\rattempted to perform server transactions.");
+            err = _("an application initialized as APPCLASS_MONITOR has\nattempted to perform a DDE transaction,\nor an application initialized as APPCMD_CLIENTONLY has \nattempted to perform server transactions.");

             break;
         case DMLERR_EXECACKTIMEOUT:
             err = _("a request for a synchronous execute transaction has timed out.");
             break;
         case DMLERR_EXECACKTIMEOUT:
             err = _("a request for a synchronous execute transaction has timed out.");


@@ -987,7 +1045,7 @@ static wxString DDEGetErrorMsg(UINT error)
             err = _("reentrancy problem.");
             break;
         case DMLERR_SERVER_DIED:
             err = _("reentrancy problem.");
             break;
         case DMLERR_SERVER_DIED:

-            err = _("a server-side transaction was attempted on a conversation\n\rthat was terminated by the client, or the server\n\rterminated before completing a transaction.");
+            err = _("a server-side transaction was attempted on a conversation\nthat was terminated by the client, or the server\nterminated before completing a transaction.");

             break;
         case DMLERR_SYS_ERROR:
             err = _("an internal error has occurred in the DDEML.");
             break;
         case DMLERR_SYS_ERROR:
             err = _("an internal error has occurred in the DDEML.");


@@ -996,7 +1054,7 @@ static wxString DDEGetErrorMsg(UINT error)
             err = _("a request to end an advise transaction has timed out.");
             break;
         case DMLERR_UNFOUND_QUEUE_ID:
             err = _("a request to end an advise transaction has timed out.");
             break;
         case DMLERR_UNFOUND_QUEUE_ID:

-            err = _("an invalid transaction identifier was passed to a DDEML function.\n\rOnce the application has returned from an XTYP_XACT_COMPLETE callback,\n\rthe transaction identifier for that callback is no longer valid.");
+            err = _("an invalid transaction identifier was passed to a DDEML function.\nOnce the application has returned from an XTYP_XACT_COMPLETE callback,\nthe transaction identifier for that callback is no longer valid.");

             break;
         default:
             err.Printf(_("Unknown DDE error %08x"), error);
             break;
         default:
             err.Printf(_("Unknown DDE error %08x"), error);