X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/56880523be1dafe2e8a63407a06dd955329bc958..cb73e6001f891ae46b12a1e4ca39b93649cb6099:/src/msw/dde.cpp diff --git a/src/msw/dde.cpp b/src/msw/dde.cpp index 6968b94312..1ddd1a726d 100644 --- a/src/msw/dde.cpp +++ b/src/msw/dde.cpp @@ -5,7 +5,7 @@ // Modified by: // Created: 01/02/97 // RCS-ID: $Id$ -// Copyright: (c) Julian Smart and Markus Holzem +// Copyright: (c) Julian Smart // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -17,7 +17,7 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma implementation "dde.h" #endif @@ -38,18 +38,35 @@ #include "wx/module.h" #include "wx/dde.h" #include "wx/intl.h" - +#include "wx/hashmap.h" #include "wx/msw/private.h" #include -#include #include -#if defined(__TWIN32__) || defined(__GNUWIN32_OLD__) +#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 // ---------------------------------------------------------------------------- @@ -104,16 +121,22 @@ static void DDELogError(const wxString& s, UINT error = DMLERR_NO_ERROR); // global variables // ---------------------------------------------------------------------------- +WX_DECLARE_STRING_HASH_MAP( HSZ, wxAtomMap ); + static DWORD DDEIdInst = 0L; static wxDDEConnection *DDECurrentlyConnecting = NULL; +static wxAtomMap wxAtomTable; + +#include "wx/listimpl.cpp" + +WX_DEFINE_LIST(wxDDEClientList); +WX_DEFINE_LIST(wxDDEServerList); +WX_DEFINE_LIST(wxDDEConnectionList); -static wxList wxAtomTable(wxKEY_STRING); -static wxList wxDDEClientObjects; -static wxList wxDDEServerObjects; +static wxDDEClientList wxDDEClientObjects; +static wxDDEServerList wxDDEServerObjects; -char *DDEDefaultIPCBuffer = NULL; -int DDEDefaultIPCBufferSize = 0; -static bool DDEInitialized = FALSE; +static bool DDEInitialized = false; // ---------------------------------------------------------------------------- // private classes @@ -126,7 +149,7 @@ class wxDDEModule : public wxModule { public: wxDDEModule() {} - bool OnInit() { return TRUE; } + bool OnInit() { return true; } void OnExit() { wxDDECleanUp(); } private: @@ -164,20 +187,23 @@ extern void wxDDEInitialize() } else { - DDEInitialized = TRUE; + DDEInitialized = true; } } } void wxDDECleanUp() { + WX_CLEAR_LIST(wxDDEClientList, wxDDEClientObjects); + WX_CLEAR_LIST(wxDDEServerList, wxDDEServerObjects); + + wxAtomTable.clear(); + if ( DDEIdInst != 0 ) { DdeUninitialize(DDEIdInst); DDEIdInst = 0; } - - delete [] DDEDefaultIPCBuffer; } // ---------------------------------------------------------------------------- @@ -187,64 +213,75 @@ void wxDDECleanUp() // 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::compatibility_iterator 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::compatibility_iterator 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) { - 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::compatibility_iterator 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::compatibility_iterator 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) { - wxNode *node = wxDDEServerObjects.First(); - wxDDEServer *found = NULL; - while (node && !found) - { - wxDDEServer *object = (wxDDEServer *)node->Data(); + wxDDEServerList::compatibility_iterator 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 +304,10 @@ bool wxDDEServer::Create(const wxString& server) DDELogError(wxString::Format(_("Failed to register DDE server '%s'"), server.c_str())); - return FALSE; + return false; } - return TRUE; + return true; } wxDDEServer::~wxDDEServer() @@ -287,21 +324,22 @@ wxDDEServer::~wxDDEServer() wxDDEServerObjects.DeleteObject(this); - wxNode *node = m_connections.First(); + wxDDEConnectionList::compatibility_iterator node = m_connections.GetFirst(); while (node) { - wxDDEConnection *connection = (wxDDEConnection *)node->Data(); - wxNode *next = node->Next(); + wxDDEConnection *connection = node->GetData(); + wxDDEConnectionList::compatibility_iterator next = node->GetNext(); + connection->SetConnected(false); 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) { - wxDDEConnection *connection = (wxDDEConnection *)node->Data(); - wxNode *next = node->Next(); + wxDDEConnection *connection = node->GetData(); + wxDDEConnectionList::compatibility_iterator next = node->GetNext(); delete connection; node = next; } @@ -314,14 +352,14 @@ wxConnectionBase *wxDDEServer::OnAcceptConnection(const wxString& /* topic */) wxDDEConnection *wxDDEServer::FindConnection(WXHCONV conv) { - wxNode *node = m_connections.First(); + wxDDEConnectionList::compatibility_iterator node = m_connections.GetFirst(); wxDDEConnection *found = NULL; while (node && !found) { - wxDDEConnection *connection = (wxDDEConnection *)node->Data(); + wxDDEConnection *connection = node->GetData(); if (connection->m_hConv == conv) found = connection; - else node = node->Next(); + else node = node->GetNext(); } return found; } @@ -329,19 +367,21 @@ wxDDEConnection *wxDDEServer::FindConnection(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; - while (node && !found) + wxDDEConnectionList::compatibility_iterator node = m_connections.GetFirst(); + while (node) { - wxDDEConnection *connection = (wxDDEConnection *)node->Data(); + wxDDEConnection *connection = node->GetData(); if (connection->m_hConv == conv) { - found = TRUE; - delete node; + m_connections.Erase(node); + return true; + } + else + { + node = node->GetNext(); } - else node = node->Next(); } - return found; + return false; } // ---------------------------------------------------------------------------- @@ -358,18 +398,18 @@ wxDDEClient::wxDDEClient() wxDDEClient::~wxDDEClient() { wxDDEClientObjects.DeleteObject(this); - wxNode *node = m_connections.First(); + wxDDEConnectionList::compatibility_iterator node = m_connections.GetFirst(); while (node) { - wxDDEConnection *connection = (wxDDEConnection *)node->Data(); + wxDDEConnection *connection = node->GetData(); delete connection; // Deletes the node implicitly (see ~wxDDEConnection) - node = m_connections.First(); + node = m_connections.GetFirst(); } } bool wxDDEClient::ValidHost(const wxString& /* host */) { - return TRUE; + return true; } wxConnectionBase *wxDDEClient::MakeConnection(const wxString& WXUNUSED(host), @@ -380,8 +420,7 @@ wxConnectionBase *wxDDEClient::MakeConnection(const wxString& WXUNUSED(host), (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 @@ -407,14 +446,14 @@ wxConnectionBase *wxDDEClient::OnMakeConnection() wxDDEConnection *wxDDEClient::FindConnection(WXHCONV conv) { - wxNode *node = m_connections.First(); + wxDDEConnectionList::compatibility_iterator node = m_connections.GetFirst(); wxDDEConnection *found = NULL; while (node && !found) { - wxDDEConnection *connection = (wxDDEConnection *)node->Data(); + wxDDEConnection *connection = node->GetData(); if (connection->m_hConv == conv) found = connection; - else node = node->Next(); + else node = node->GetNext(); } return found; } @@ -422,40 +461,27 @@ wxDDEConnection *wxDDEClient::FindConnection(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; - while (node && !found) + wxDDEConnectionList::compatibility_iterator node = m_connections.GetFirst(); + while (node) { - wxDDEConnection *connection = (wxDDEConnection *)node->Data(); + wxDDEConnection *connection = node->GetData(); if (connection->m_hConv == conv) { - found = TRUE; - delete node; + m_connections.Erase(node); + return true; } - else node = node->Next(); + else node = node->GetNext(); } - return found; + return false; } // ---------------------------------------------------------------------------- // 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; @@ -464,20 +490,17 @@ wxDDEConnection::wxDDEConnection(char *buffer, int size) } wxDDEConnection::wxDDEConnection() + : wxConnectionBase() { 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() { + Disconnect(); if (m_server) m_server->GetConnections().DeleteObject(this); else @@ -487,6 +510,9 @@ wxDDEConnection::~wxDDEConnection() // Calls that CLIENT can make bool wxDDEConnection::Disconnect() { + if ( !GetConnected() ) + return true; + DDEDeleteConnection(GetHConv()); bool ok = DdeDisconnect(GetHConv()) != 0; @@ -495,6 +521,8 @@ bool wxDDEConnection::Disconnect() DDELogError(_T("Failed to disconnect from DDE server gracefully")); } + SetConnected( false ); // so we don't try and disconnect again + return ok; } @@ -513,6 +541,7 @@ bool wxDDEConnection::Execute(const wxChar *data, int size, wxIPCFormat format) XTYP_EXECUTE, DDE_TIMEOUT, &result) != 0; + if ( !ok ) { DDELogError(_T("DDE execute request failed")); @@ -521,9 +550,10 @@ bool wxDDEConnection::Execute(const wxChar *data, int size, wxIPCFormat format) return ok; } -char *wxDDEConnection::Request(const wxString& item, int *size, wxIPCFormat format) +wxChar *wxDDEConnection::Request(const wxString& item, int *size, wxIPCFormat format) { DWORD result; + HSZ atom = DDEGetAtom(item); HDDEDATA returned_data = DdeClientTransaction(NULL, 0, @@ -539,14 +569,19 @@ char *wxDDEConnection::Request(const wxString& item, int *size, wxIPCFormat form 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; - return m_bufPtr; + return data; } bool wxDDEConnection::Poke(const wxString& item, wxChar *data, int size, wxIPCFormat format) @@ -623,7 +658,7 @@ bool wxDDEConnection::Advise(const wxString& item, 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; @@ -639,7 +674,7 @@ bool wxDDEConnection::Advise(const wxString& item, bool wxDDEConnection::OnDisconnect() { delete this; - return TRUE; + return true; } // ---------------------------------------------------------------------------- @@ -676,7 +711,7 @@ _DDECallback(WORD wType, connection->m_hConv = 0; connection->m_topicName = topic; DDECurrentlyConnecting = connection; - return (DDERETURN)(DWORD)TRUE; + return (DDERETURN)(DWORD)true; } } break; @@ -688,7 +723,7 @@ _DDECallback(WORD wType, { DDECurrentlyConnecting->m_hConv = (WXHCONV) hConv; DDECurrentlyConnecting = NULL; - return (DDERETURN)(DWORD)TRUE; + return (DDERETURN)(DWORD)true; } break; } @@ -696,10 +731,14 @@ _DDECallback(WORD wType, 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; } @@ -710,13 +749,18 @@ _DDECallback(WORD wType, 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); + if ( connection->OnExecute(connection->m_topicName, - connection->m_bufPtr, + data, (int)len, (wxIPCFormat) wFmt) ) { @@ -736,14 +780,14 @@ _DDECallback(WORD wType, 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) - user_size = wxStrlen(data) + 1; + user_size = wxStrlen((wxChar*)data) + 1; HDDEDATA handle = DdeCreateDataHandle(DDEIdInst, (LPBYTE)data, @@ -766,15 +810,19 @@ _DDECallback(WORD wType, { 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, - connection->m_bufPtr, + data, (int)len, (wxIPCFormat) wFmt); @@ -849,14 +897,18 @@ _DDECallback(WORD wType, { 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, - connection->m_bufPtr, + data, (int)len, (wxIPCFormat) wFmt) ) { @@ -876,23 +928,21 @@ _DDECallback(WORD wType, // ---------------------------------------------------------------------------- // Atom table stuff -static HSZ DDEAddAtom(const wxString& string) +static HSZ DDEAddAtom(const wxString& str) { - HSZ atom = DDEAtomFromString(string); - wxAtomTable.Append(string, (wxObject *)atom); + HSZ atom = DDEAtomFromString(str); + wxAtomTable[str] = atom; return atom; } -static HSZ DDEGetAtom(const wxString& string) +static HSZ DDEGetAtom(const wxString& str) { - wxNode *node = wxAtomTable.Find(string); - if (node) - return (HSZ)node->Data(); - else - { - DDEAddAtom(string); - return (HSZ)(wxAtomTable.Find(string)->Data()); - } + wxAtomMap::iterator it = wxAtomTable.find(str); + + if (it != wxAtomTable.end()) + return it->second; + + return DDEAddAtom(str); } // atom <-> strings @@ -900,7 +950,7 @@ static HSZ DDEAtomFromString(const wxString& s) { 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")); @@ -915,8 +965,7 @@ 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; } @@ -954,10 +1003,10 @@ static wxString DDEGetErrorMsg(UINT error) err = _("a request for a synchronous data transaction has timed out."); break; case DMLERR_DLL_NOT_INITIALIZED: - err = _("a 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: - 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."); @@ -987,7 +1036,7 @@ static wxString DDEGetErrorMsg(UINT error) 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."); @@ -996,7 +1045,7 @@ static wxString DDEGetErrorMsg(UINT error) 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);