X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/df5168c427b51f1ab2b3200a5c8f7626b3d24aae..3bf93e1e9ac6b61e5220967d2ada2d4faec4dd9c:/src/msw/dde.cpp diff --git a/src/msw/dde.cpp b/src/msw/dde.cpp index cb98067949..475b580110 100644 --- a/src/msw/dde.cpp +++ b/src/msw/dde.cpp @@ -17,7 +17,7 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma implementation "dde.h" #endif @@ -39,35 +39,13 @@ #include "wx/dde.h" #include "wx/intl.h" #include "wx/hashmap.h" +#include "wx/math.h" #include "wx/msw/private.h" #include -#include #include -#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 // ---------------------------------------------------------------------------- @@ -113,6 +91,7 @@ static HSZ DDEGetAtom(const wxString& string); // 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); @@ -195,8 +174,10 @@ extern void wxDDEInitialize() void wxDDECleanUp() { - WX_CLEAR_LIST(wxDDEClientList, wxDDEClientObjects); - WX_CLEAR_LIST(wxDDEServerList, wxDDEServerObjects); + // deleting them later won't work as DDE won't be initialized any more + wxASSERT_MSG( wxDDEServerObjects.empty() && + wxDDEClientObjects.empty(), + _T("all DDE objects should be deleted by now") ); wxAtomTable.clear(); @@ -300,26 +281,45 @@ bool wxDDEServer::Create(const wxString& 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 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() { - 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); } } @@ -417,12 +417,35 @@ wxConnectionBase *wxDDEClient::MakeConnection(const wxString& WXUNUSED(host), 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 ) { - 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 { @@ -535,7 +558,8 @@ bool wxDDEConnection::Execute(const wxChar *data, int size, wxIPCFormat format) size = wxStrlen(data) + 1; } - bool ok = DdeClientTransaction((LPBYTE)data, size, + bool ok = DdeClientTransaction((LPBYTE)data, + size * sizeof(wxChar), GetHConv(), NULL, format, @@ -571,16 +595,17 @@ wxChar *wxDDEConnection::Request(const wxString& item, int *size, wxIPCFormat fo } DWORD len = DdeGetData(returned_data, NULL, 0, 0); + len = (DWORD)ceil( double(len)/sizeof(wxChar) ); 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; + *size = len; return data; } @@ -594,7 +619,8 @@ bool wxDDEConnection::Poke(const wxString& item, wxChar *data, int size, wxIPCFo } HSZ item_atom = DDEGetAtom(item); - bool ok = DdeClientTransaction((LPBYTE)data, size, + bool ok = DdeClientTransaction((LPBYTE)data, + size * sizeof(wxChar), GetHConv(), item_atom, format, XTYP_POKE, @@ -751,6 +777,7 @@ _DDECallback(WORD wType, if (connection) { DWORD len = DdeGetData(hData, NULL, 0, 0); + len = (DWORD)ceil( double(len)/sizeof(wxChar) ); wxChar *data = connection->GetBufferAtLeast( len ); wxASSERT_MSG(data != NULL, @@ -792,7 +819,7 @@ _DDECallback(WORD wType, HDDEDATA handle = DdeCreateDataHandle(DDEIdInst, (LPBYTE)data, - user_size, + user_size*sizeof(wxChar), 0, hsz2, wFmt, @@ -812,6 +839,7 @@ _DDECallback(WORD wType, wxString item_name = DDEStringFromAtom(hsz2); DWORD len = DdeGetData(hData, NULL, 0, 0); + len = (DWORD)ceil( double(len) / sizeof(wxChar) ); wxChar *data = connection->GetBufferAtLeast( len ); wxASSERT_MSG(data != NULL, @@ -875,7 +903,7 @@ _DDECallback(WORD wType, ( DDEIdInst, (LPBYTE)connection->m_sendingData, - connection->m_dataSize, + connection->m_dataSize*sizeof(wxChar), 0, hsz2, connection->m_dataType, @@ -899,6 +927,7 @@ _DDECallback(WORD wType, wxString item_name = DDEStringFromAtom(hsz2); DWORD len = DdeGetData(hData, NULL, 0, 0); + len = (DWORD)ceil( double(len) / sizeof(wxChar) ); wxChar *data = connection->GetBufferAtLeast( len ); wxASSERT_MSG(data != NULL, @@ -946,7 +975,10 @@ static HSZ DDEGetAtom(const wxString& 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") ); @@ -966,12 +998,20 @@ static wxString DDEStringFromAtom(HSZ hsz) static const size_t len = 256; wxString s; - (void)DdeQueryString(DDEIdInst, hsz, s.GetWriteBuf(len), len, DDE_CP); - s.UngetWriteBuf(); + (void)DdeQueryString(DDEIdInst, hsz, wxStringBuffer(s, len), len, DDE_CP); 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 // ----------------------------------------------------------------------------