Updated to Scintilla 1.67

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

diff --git a/src/msw/dde.cpp b/src/msw/dde.cpp
index 72bf2a9230daf7c040c4bfbae4d0716695328f17..d69720c31db060a22fdb9a0f4c606b02e04de38b 100644 (file)
--- a/src/msw/dde.cpp
+++ b/src/msw/dde.cpp
@@ -17,10 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "dde.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 


@@ -45,28 +41,6 @@
 #include <string.h>
 #include <ddeml.h>
 
 #include <string.h>
 #include <ddeml.h>
 

-#ifdef __GNUWIN32_OLD__
-    #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
 // ----------------------------------------------------------------------------


@@ -112,6 +86,7 @@ static HSZ DDEGetAtom(const wxString& string);
 // string handles
 static HSZ DDEAtomFromString(const wxString& s);
 static wxString DDEStringFromAtom(HSZ hsz);
 // string handles
 static HSZ DDEAtomFromString(const wxString& s);
 static wxString DDEStringFromAtom(HSZ hsz);

+static void DDEFreeString(HSZ hsz);

 
 // error handling
 static wxString DDEGetErrorMsg(UINT error);
 
 // error handling
 static wxString DDEGetErrorMsg(UINT error);


@@ -129,9 +104,9 @@ static wxAtomMap wxAtomTable;
 
 #include "wx/listimpl.cpp"
 
 
 #include "wx/listimpl.cpp"
 

-WX_DEFINE_LIST(wxDDEClientList);
-WX_DEFINE_LIST(wxDDEServerList);
-WX_DEFINE_LIST(wxDDEConnectionList);
+WX_DEFINE_LIST(wxDDEClientList)
+WX_DEFINE_LIST(wxDDEServerList)
+WX_DEFINE_LIST(wxDDEConnectionList)

 
 static wxDDEClientList wxDDEClientObjects;
 static wxDDEServerList wxDDEServerObjects;
 
 static wxDDEClientList wxDDEClientObjects;
 static wxDDEServerList wxDDEServerObjects;


@@ -301,26 +276,45 @@ bool wxDDEServer::Create(const wxString& server)
 {
     m_serviceName = server;
 
 {
     m_serviceName = server;
 

-    if ( !DdeNameService(DDEIdInst, DDEAtomFromString(server), (HSZ)NULL, DNS_REGISTER) )
-    {
-        DDELogError(wxString::Format(_("Failed to register DDE server '%s'"),
-                                     server.c_str()));
+    HSZ hsz = DDEAtomFromString(server);

 
 

+    if ( !hsz )
+    {

         return false;
     }
 
         return false;
     }
 

-    return true;
+
+    bool success = (DdeNameService(DDEIdInst, hsz, (HSZ) NULL, DNS_REGISTER)
+        != NULL);
+
+    if (!success)
+    {
+        DDELogError(wxString::Format(_("Failed to register DDE server '%s'"),
+            server.c_str()));
+    }
+
+    DDEFreeString(hsz);
+
+    return success;

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

-    if ( !!m_serviceName )
+    if ( !m_serviceName.IsEmpty() )

     {
     {

-        if ( !DdeNameService(DDEIdInst, DDEAtomFromString(m_serviceName),
-                             (HSZ)NULL, DNS_UNREGISTER) )
+        HSZ hsz = DDEAtomFromString(m_serviceName);
+
+        if (hsz)

         {
         {

-            DDELogError(wxString::Format(_("Failed to unregister DDE server '%s'"),
-                                         m_serviceName.c_str()));
+            if ( !DdeNameService(DDEIdInst, hsz,
+                (HSZ) NULL, DNS_UNREGISTER) )
+            {
+                DDELogError(wxString::Format(
+                    _("Failed to unregister DDE server '%s'"),
+                    m_serviceName.c_str()));
+            }
+
+            DDEFreeString(hsz);

         }
     }
 
         }
     }
 


@@ -418,12 +412,35 @@ wxConnectionBase *wxDDEClient::MakeConnection(const wxString& WXUNUSED(host),
                                               const wxString& server,
                                               const wxString& topic)
 {
                                               const wxString& server,
                                               const wxString& topic)
 {

-    HCONV hConv = DdeConnect(DDEIdInst, DDEAtomFromString(server), DDEAtomFromString(topic),
-                             (PCONVCONTEXT)NULL);
+    HSZ hszServer = DDEAtomFromString(server);
+
+    if ( !hszServer )
+    {
+        return (wxConnectionBase*) NULL;
+    }
+
+
+    HSZ hszTopic = DDEAtomFromString(topic);
+
+    if ( !hszTopic )
+    {
+        DDEFreeString(hszServer);
+        return (wxConnectionBase*) NULL;
+    }
+
+
+    HCONV hConv = ::DdeConnect(DDEIdInst, hszServer, hszTopic,
+        (PCONVCONTEXT) NULL);
+
+    DDEFreeString(hszServer);
+    DDEFreeString(hszTopic);
+
+

     if ( !hConv )
     {
     if ( !hConv )
     {

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

     }
     else
     {
     }
     else
     {


@@ -528,18 +545,21 @@ bool wxDDEConnection::Disconnect()
     return ok;
 }
 
     return ok;
 }
 

-bool wxDDEConnection::Execute(const wxChar *data, int size, wxIPCFormat format)
+bool wxDDEConnection::Execute(const wxChar *data, int size, wxIPCFormat WXUNUSED(format))

 {
     DWORD result;
     if (size < 0)
     {
 {
     DWORD result;
     if (size < 0)
     {

-        size = wxStrlen(data) + 1;
+        size = (wxStrlen(data) + 1) * sizeof(wxChar);    // includes final NUL

     }
 
     }
 

-    bool ok = DdeClientTransaction((LPBYTE)data, size,
+    bool ok = DdeClientTransaction((LPBYTE)data,
+                                    size,

                                     GetHConv(),
                                     NULL,
                                     GetHConv(),
                                     NULL,

-                                    format,
+// If the transaction specified by the wType parameter does not pass data or is XTYP_EXECUTE,
+// wFmt should be zero. 
+                                    0,

                                     XTYP_EXECUTE,
                                     DDE_TIMEOUT,
                                     &result) != 0;
                                     XTYP_EXECUTE,
                                     DDE_TIMEOUT,
                                     &result) != 0;


@@ -576,9 +596,9 @@ wxChar *wxDDEConnection::Request(const wxString& item, int *size, wxIPCFormat fo
     wxChar *data = GetBufferAtLeast( len );
     wxASSERT_MSG(data != NULL,
                  _T("Buffer too small in wxDDEConnection::Request") );
     wxChar *data = GetBufferAtLeast( len );
     wxASSERT_MSG(data != NULL,
                  _T("Buffer too small in wxDDEConnection::Request") );

-    DdeGetData(returned_data, (LPBYTE)data, len, 0);
+    (void) DdeGetData(returned_data, (LPBYTE)data, len, 0);

 
 

-    DdeFreeDataHandle(returned_data);
+    (void) DdeFreeDataHandle(returned_data);

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


@@ -591,11 +611,12 @@ bool wxDDEConnection::Poke(const wxString& item, wxChar *data, int size, wxIPCFo
     DWORD result;
     if (size < 0)
     {
     DWORD result;
     if (size < 0)
     {

-        size = wxStrlen(data) + 1;
+        size = (wxStrlen(data) + 1) * sizeof(wxChar);    // includes final NUL

     }
 
     HSZ item_atom = DDEGetAtom(item);
     }
 
     HSZ item_atom = DDEGetAtom(item);

-    bool ok = DdeClientTransaction((LPBYTE)data, size,
+    bool ok = DdeClientTransaction((LPBYTE)data,
+                                   size,

                                    GetHConv(),
                                    item_atom, format,
                                    XTYP_POKE,
                                    GetHConv(),
                                    item_atom, format,
                                    XTYP_POKE,


@@ -655,14 +676,15 @@ bool wxDDEConnection::Advise(const wxString& item,
 {
     if (size < 0)
     {
 {
     if (size < 0)
     {

-        size = wxStrlen(data) + 1;
+        size = (wxStrlen(data) + 1) * sizeof(wxChar);    // includes final NUL

     }
 
     HSZ item_atom = DDEGetAtom(item);
     HSZ topic_atom = DDEGetAtom(m_topicName);
     m_sendingData = data;  // mrf: potential for scope problems here?
     m_dataSize = size;
     }
 
     HSZ item_atom = DDEGetAtom(item);
     HSZ topic_atom = DDEGetAtom(m_topicName);
     m_sendingData = data;  // mrf: potential for scope problems here?
     m_dataSize = size;

-    m_dataType = format;
+    // wxIPC_PRIVATE does not succeed, so use text instead
+    m_dataType = format == wxIPC_PRIVATE ? wxIPC_TEXT : format;

 
     bool ok = DdePostAdvise(DDEIdInst, topic_atom, item_atom) != 0;
     if ( !ok )
 
     bool ok = DdePostAdvise(DDEIdInst, topic_atom, item_atom) != 0;
     if ( !ok )


@@ -761,10 +783,11 @@ _DDECallback(WORD wType,
 
                     DdeFreeDataHandle(hData);
 
 
                     DdeFreeDataHandle(hData);
 

+// XTYP_EXECUTE cannot be used for arbitrary data, but only for text

                     if ( connection->OnExecute(connection->m_topicName,
                                                data,
                                                (int)len,
                     if ( connection->OnExecute(connection->m_topicName,
                                                data,
                                                (int)len,

-                                               (wxIPCFormat) wFmt) )
+                                               wxIPC_TEXT ) )

                     {
                         return (DDERETURN)(DWORD)DDE_FACK;
                     }
                     {
                         return (DDERETURN)(DWORD)DDE_FACK;
                     }


@@ -789,7 +812,7 @@ _DDECallback(WORD wType,
                     if (data)
                     {
                         if (user_size < 0)
                     if (data)
                     {
                         if (user_size < 0)

-                            user_size = wxStrlen((wxChar*)data) + 1;
+                            user_size = (wxStrlen((wxChar*)data) + 1) * sizeof(wxChar);    // includes final NUL

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


@@ -816,7 +839,7 @@ _DDECallback(WORD wType,
 
                     wxChar *data = connection->GetBufferAtLeast( len );
                     wxASSERT_MSG(data != NULL,
 
                     wxChar *data = connection->GetBufferAtLeast( len );
                     wxASSERT_MSG(data != NULL,

-                                 _T("Buffer too small in _DDECallback (XTYP_EXECUTE)") );
+                                 _T("Buffer too small in _DDECallback (XTYP_POKE)") );

 
                     DdeGetData(hData, (LPBYTE)data, len, 0);
 
 
                     DdeGetData(hData, (LPBYTE)data, len, 0);
 


@@ -947,7 +970,10 @@ static HSZ DDEGetAtom(const wxString& str)
     return DDEAddAtom(str);
 }
 
     return DDEAddAtom(str);
 }
 

-// atom <-> strings
+/* atom <-> strings
+The returned handle has to be freed by the caller (using
+(static) DDEFreeString).
+*/

 static HSZ DDEAtomFromString(const wxString& s)
 {
     wxASSERT_MSG( DDEIdInst, _T("DDE not initialized") );
 static HSZ DDEAtomFromString(const wxString& s)
 {
     wxASSERT_MSG( DDEIdInst, _T("DDE not initialized") );


@@ -972,6 +998,15 @@ static wxString DDEStringFromAtom(HSZ hsz)
     return s;
 }
 
     return s;
 }
 

+static void DDEFreeString(HSZ hsz)
+{
+    // DS: Failure to free a string handle might indicate there's
+    // some other severe error.
+    bool ok = (::DdeFreeStringHandle(DDEIdInst, hsz) != 0);
+    wxASSERT_MSG( ok, wxT("Failed to free DDE string handle") );
+    wxUnusedVar(ok);
+}
+

 // ----------------------------------------------------------------------------
 // error handling
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // error handling
 // ----------------------------------------------------------------------------