| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: dde.cpp |
| 3 | // Purpose: DDE classes |
| 4 | // Author: Julian Smart |
| 5 | // Modified by: |
| 6 | // Created: 01/02/97 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Julian Smart and Markus Holzem |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #ifdef __GNUG__ |
| 13 | #pragma implementation "dde.h" |
| 14 | #endif |
| 15 | |
| 16 | // For compilers that support precompilation, includes "wx.h". |
| 17 | #include "wx/wxprec.h" |
| 18 | |
| 19 | #ifdef __BORLANDC__ |
| 20 | #pragma hdrstop |
| 21 | #endif |
| 22 | |
| 23 | #ifndef WX_PRECOMP |
| 24 | #include "wx/defs.h" |
| 25 | #endif |
| 26 | |
| 27 | #if wxUSE_IPC |
| 28 | |
| 29 | #ifndef WX_PRECOMP |
| 30 | #include "wx/utils.h" |
| 31 | #include "wx/app.h" |
| 32 | #endif |
| 33 | |
| 34 | #include "wx/module.h" |
| 35 | #include "wx/dde.h" |
| 36 | |
| 37 | #include "wx/msw/private.h" |
| 38 | #include <windows.h> |
| 39 | #include <ddeml.h> |
| 40 | |
| 41 | #ifndef __TWIN32__ |
| 42 | #ifdef __GNUWIN32__ |
| 43 | #include "wx/msw/gnuwin32/extra.h" |
| 44 | #endif |
| 45 | #endif |
| 46 | |
| 47 | #include <string.h> |
| 48 | |
| 49 | #ifdef __WIN32__ |
| 50 | #define _EXPORT /**/ |
| 51 | #else |
| 52 | #define _EXPORT _export |
| 53 | #endif |
| 54 | |
| 55 | #if !USE_SHARED_LIBRARY |
| 56 | IMPLEMENT_DYNAMIC_CLASS(wxDDEServer, wxServerBase) |
| 57 | IMPLEMENT_DYNAMIC_CLASS(wxDDEClient, wxClientBase) |
| 58 | IMPLEMENT_CLASS(wxDDEConnection, wxConnectionBase) |
| 59 | #endif |
| 60 | |
| 61 | static wxDDEConnection *DDEFindConnection(HCONV hConv); |
| 62 | static void DDEDeleteConnection(HCONV hConv); |
| 63 | static wxDDEServer *DDEFindServer(const wxString& s); |
| 64 | |
| 65 | extern "C" HDDEDATA EXPENTRY _EXPORT _DDECallback( |
| 66 | WORD wType, |
| 67 | WORD wFmt, |
| 68 | HCONV hConv, |
| 69 | HSZ hsz1, |
| 70 | HSZ hsz2, |
| 71 | HDDEDATA hData, |
| 72 | DWORD lData1, |
| 73 | DWORD lData2); |
| 74 | |
| 75 | // Add topic name to atom table before using in conversations |
| 76 | static HSZ DDEAddAtom(const wxString& string); |
| 77 | static HSZ DDEGetAtom(const wxString& string); |
| 78 | static void DDEPrintError(void); |
| 79 | |
| 80 | static DWORD DDEIdInst = 0L; |
| 81 | static wxDDEConnection *DDECurrentlyConnecting = NULL; |
| 82 | |
| 83 | static wxList wxAtomTable(wxKEY_STRING); |
| 84 | static wxList wxDDEClientObjects; |
| 85 | static wxList wxDDEServerObjects; |
| 86 | |
| 87 | char *DDEDefaultIPCBuffer = NULL; |
| 88 | int DDEDefaultIPCBufferSize = 0; |
| 89 | |
| 90 | /* |
| 91 | * Initialization |
| 92 | * |
| 93 | */ |
| 94 | |
| 95 | static bool DDEInitialized = FALSE; |
| 96 | |
| 97 | void wxDDEInitialize() |
| 98 | { |
| 99 | if (DDEInitialized) |
| 100 | return; |
| 101 | DDEInitialized = TRUE; |
| 102 | |
| 103 | // Should insert filter flags |
| 104 | DdeInitialize(&DDEIdInst, (PFNCALLBACK)MakeProcInstance( |
| 105 | (FARPROC)_DDECallback, wxGetInstance()), |
| 106 | APPCLASS_STANDARD, |
| 107 | 0L); |
| 108 | } |
| 109 | |
| 110 | /* |
| 111 | * CleanUp |
| 112 | */ |
| 113 | |
| 114 | void wxDDECleanUp() |
| 115 | { |
| 116 | if (DDEIdInst != 0) |
| 117 | { |
| 118 | DdeUninitialize(DDEIdInst); |
| 119 | DDEIdInst = 0; |
| 120 | } |
| 121 | if (DDEDefaultIPCBuffer) |
| 122 | delete [] DDEDefaultIPCBuffer ; |
| 123 | } |
| 124 | |
| 125 | // A module to allow DDE initialization/cleanup |
| 126 | // without calling these functions from app.cpp or from |
| 127 | // the user's application. |
| 128 | |
| 129 | class wxDDEModule: public wxModule |
| 130 | { |
| 131 | DECLARE_DYNAMIC_CLASS(wxDDEModule) |
| 132 | public: |
| 133 | wxDDEModule() {} |
| 134 | bool OnInit() { wxDDEInitialize(); return TRUE; }; |
| 135 | void OnExit() { wxDDECleanUp(); }; |
| 136 | }; |
| 137 | |
| 138 | IMPLEMENT_DYNAMIC_CLASS(wxDDEModule, wxModule) |
| 139 | |
| 140 | // Global find connection |
| 141 | static wxDDEConnection *DDEFindConnection(HCONV hConv) |
| 142 | { |
| 143 | wxNode *node = wxDDEServerObjects.First(); |
| 144 | wxDDEConnection *found = NULL; |
| 145 | while (node && !found) |
| 146 | { |
| 147 | wxDDEServer *object = (wxDDEServer *)node->Data(); |
| 148 | found = object->FindConnection((WXHCONV) hConv); |
| 149 | node = node->Next(); |
| 150 | } |
| 151 | if (found) |
| 152 | return found; |
| 153 | |
| 154 | node = wxDDEClientObjects.First(); |
| 155 | while (node && !found) |
| 156 | { |
| 157 | wxDDEClient *object = (wxDDEClient *)node->Data(); |
| 158 | found = object->FindConnection((WXHCONV) hConv); |
| 159 | node = node->Next(); |
| 160 | } |
| 161 | return found; |
| 162 | } |
| 163 | |
| 164 | // Global delete connection |
| 165 | static void DDEDeleteConnection(HCONV hConv) |
| 166 | { |
| 167 | wxNode *node = wxDDEServerObjects.First(); |
| 168 | bool found = FALSE; |
| 169 | while (node && !found) |
| 170 | { |
| 171 | wxDDEServer *object = (wxDDEServer *)node->Data(); |
| 172 | found = object->DeleteConnection((WXHCONV) hConv); |
| 173 | node = node->Next(); |
| 174 | } |
| 175 | if (found) |
| 176 | return; |
| 177 | |
| 178 | node = wxDDEServerObjects.First(); |
| 179 | while (node && !found) |
| 180 | { |
| 181 | wxDDEClient *object = (wxDDEClient *)node->Data(); |
| 182 | found = object->DeleteConnection((WXHCONV) hConv); |
| 183 | node = node->Next(); |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | // Find a server from a service name |
| 188 | static wxDDEServer *DDEFindServer(const wxString& s) |
| 189 | { |
| 190 | wxNode *node = wxDDEServerObjects.First(); |
| 191 | wxDDEServer *found = NULL; |
| 192 | while (node && !found) |
| 193 | { |
| 194 | wxDDEServer *object = (wxDDEServer *)node->Data(); |
| 195 | |
| 196 | if (object->GetServiceName() == s) |
| 197 | found = object; |
| 198 | else node = node->Next(); |
| 199 | } |
| 200 | return found; |
| 201 | } |
| 202 | |
| 203 | /* |
| 204 | * Server |
| 205 | * |
| 206 | */ |
| 207 | |
| 208 | wxDDEServer::wxDDEServer(void) |
| 209 | { |
| 210 | m_serviceName = ""; |
| 211 | wxDDEServerObjects.Append(this); |
| 212 | } |
| 213 | |
| 214 | bool wxDDEServer::Create(const wxString& server_name) |
| 215 | { |
| 216 | m_serviceName = server_name; |
| 217 | HSZ serviceName = DdeCreateStringHandle(DDEIdInst, (char*) (const char *)server_name, CP_WINANSI); |
| 218 | |
| 219 | if (DdeNameService(DDEIdInst, serviceName, (HSZ) NULL, DNS_REGISTER) == 0) |
| 220 | { |
| 221 | DDEPrintError(); |
| 222 | return FALSE; |
| 223 | } |
| 224 | return TRUE; |
| 225 | } |
| 226 | |
| 227 | wxDDEServer::~wxDDEServer(void) |
| 228 | { |
| 229 | if (m_serviceName != "") |
| 230 | { |
| 231 | HSZ serviceName = DdeCreateStringHandle(DDEIdInst, (char*) (const char *)m_serviceName, CP_WINANSI); |
| 232 | if (DdeNameService(DDEIdInst, serviceName, NULL, DNS_UNREGISTER) == 0) |
| 233 | { |
| 234 | DDEPrintError(); |
| 235 | } |
| 236 | } |
| 237 | wxDDEServerObjects.DeleteObject(this); |
| 238 | |
| 239 | wxNode *node = m_connections.First(); |
| 240 | while (node) |
| 241 | { |
| 242 | wxDDEConnection *connection = (wxDDEConnection *)node->Data(); |
| 243 | wxNode *next = node->Next(); |
| 244 | connection->OnDisconnect(); // May delete the node implicitly |
| 245 | node = next; |
| 246 | } |
| 247 | |
| 248 | // If any left after this, delete them |
| 249 | node = m_connections.First(); |
| 250 | while (node) |
| 251 | { |
| 252 | wxDDEConnection *connection = (wxDDEConnection *)node->Data(); |
| 253 | wxNode *next = node->Next(); |
| 254 | delete connection; |
| 255 | node = next; |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | wxConnectionBase *wxDDEServer::OnAcceptConnection(const wxString& /* topic */) |
| 260 | { |
| 261 | return new wxDDEConnection; |
| 262 | } |
| 263 | |
| 264 | wxDDEConnection *wxDDEServer::FindConnection(WXHCONV conv) |
| 265 | { |
| 266 | wxNode *node = m_connections.First(); |
| 267 | wxDDEConnection *found = NULL; |
| 268 | while (node && !found) |
| 269 | { |
| 270 | wxDDEConnection *connection = (wxDDEConnection *)node->Data(); |
| 271 | if (connection->m_hConv == conv) |
| 272 | found = connection; |
| 273 | else node = node->Next(); |
| 274 | } |
| 275 | return found; |
| 276 | } |
| 277 | |
| 278 | // Only delete the entry in the map, not the actual connection |
| 279 | bool wxDDEServer::DeleteConnection(WXHCONV conv) |
| 280 | { |
| 281 | wxNode *node = m_connections.First(); |
| 282 | bool found = FALSE; |
| 283 | while (node && !found) |
| 284 | { |
| 285 | wxDDEConnection *connection = (wxDDEConnection *)node->Data(); |
| 286 | if (connection->m_hConv == conv) |
| 287 | { |
| 288 | found = TRUE; |
| 289 | delete node; |
| 290 | } |
| 291 | else node = node->Next(); |
| 292 | } |
| 293 | return found; |
| 294 | } |
| 295 | |
| 296 | |
| 297 | /* |
| 298 | * Client |
| 299 | * |
| 300 | */ |
| 301 | |
| 302 | |
| 303 | wxDDEClient::wxDDEClient(void) |
| 304 | { |
| 305 | wxDDEClientObjects.Append(this); |
| 306 | } |
| 307 | |
| 308 | wxDDEClient::~wxDDEClient(void) |
| 309 | { |
| 310 | wxDDEClientObjects.DeleteObject(this); |
| 311 | wxNode *node = m_connections.First(); |
| 312 | while (node) |
| 313 | { |
| 314 | wxDDEConnection *connection = (wxDDEConnection *)node->Data(); |
| 315 | delete connection; // Deletes the node implicitly (see ~wxDDEConnection) |
| 316 | node = m_connections.First(); |
| 317 | } |
| 318 | } |
| 319 | |
| 320 | bool wxDDEClient::ValidHost(const wxString& /* host */) |
| 321 | { |
| 322 | return TRUE; |
| 323 | } |
| 324 | |
| 325 | wxConnectionBase *wxDDEClient::MakeConnection(const wxString& /* host */, const wxString& server_name, const wxString& topic) |
| 326 | { |
| 327 | HSZ serviceName = DdeCreateStringHandle(DDEIdInst, (char*) (const char *)server_name, CP_WINANSI); |
| 328 | HSZ topic_atom = DdeCreateStringHandle(DDEIdInst, (char*) (const char *)topic, CP_WINANSI); |
| 329 | |
| 330 | HCONV hConv = DdeConnect(DDEIdInst, serviceName, topic_atom, (PCONVCONTEXT)NULL); |
| 331 | if (hConv == (HCONV) NULL) |
| 332 | return (wxConnectionBase*) NULL; |
| 333 | else |
| 334 | { |
| 335 | wxDDEConnection *connection = (wxDDEConnection*) OnMakeConnection(); |
| 336 | if (connection) |
| 337 | { |
| 338 | connection->m_hConv = (WXHCONV) hConv; |
| 339 | connection->m_topicName = topic; |
| 340 | connection->m_client = this; |
| 341 | m_connections.Append(connection); |
| 342 | return connection; |
| 343 | } |
| 344 | else return (wxConnectionBase*) NULL; |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | wxConnectionBase *wxDDEClient::OnMakeConnection(void) |
| 349 | { |
| 350 | return new wxDDEConnection; |
| 351 | } |
| 352 | |
| 353 | wxDDEConnection *wxDDEClient::FindConnection(WXHCONV conv) |
| 354 | { |
| 355 | wxNode *node = m_connections.First(); |
| 356 | wxDDEConnection *found = NULL; |
| 357 | while (node && !found) |
| 358 | { |
| 359 | wxDDEConnection *connection = (wxDDEConnection *)node->Data(); |
| 360 | if (connection->m_hConv == conv) |
| 361 | found = connection; |
| 362 | else node = node->Next(); |
| 363 | } |
| 364 | return found; |
| 365 | } |
| 366 | |
| 367 | // Only delete the entry in the map, not the actual connection |
| 368 | bool wxDDEClient::DeleteConnection(WXHCONV conv) |
| 369 | { |
| 370 | wxNode *node = m_connections.First(); |
| 371 | bool found = FALSE; |
| 372 | while (node && !found) |
| 373 | { |
| 374 | wxDDEConnection *connection = (wxDDEConnection *)node->Data(); |
| 375 | if (connection->m_hConv == conv) |
| 376 | { |
| 377 | found = TRUE; |
| 378 | delete node; |
| 379 | } |
| 380 | else node = node->Next(); |
| 381 | } |
| 382 | return found; |
| 383 | } |
| 384 | |
| 385 | /* |
| 386 | * Connection |
| 387 | */ |
| 388 | |
| 389 | wxDDEConnection::wxDDEConnection(char *buffer, int size) |
| 390 | { |
| 391 | if (buffer == NULL) |
| 392 | { |
| 393 | if (DDEDefaultIPCBuffer == NULL) |
| 394 | DDEDefaultIPCBuffer = new char[DDEDefaultIPCBufferSize]; |
| 395 | m_bufPtr = DDEDefaultIPCBuffer; |
| 396 | m_bufSize = DDEDefaultIPCBufferSize; |
| 397 | } |
| 398 | else |
| 399 | { |
| 400 | m_bufPtr = buffer; |
| 401 | m_bufSize = size; |
| 402 | } |
| 403 | |
| 404 | m_topicName = ""; |
| 405 | |
| 406 | m_client = NULL; |
| 407 | m_server = NULL; |
| 408 | |
| 409 | m_hConv = 0; |
| 410 | m_sendingData = NULL; |
| 411 | } |
| 412 | |
| 413 | wxDDEConnection::wxDDEConnection(void) |
| 414 | { |
| 415 | m_hConv = 0; |
| 416 | m_sendingData = NULL; |
| 417 | m_server = NULL; |
| 418 | m_client = NULL; |
| 419 | if (DDEDefaultIPCBuffer == NULL) |
| 420 | DDEDefaultIPCBuffer = new char[DDEDefaultIPCBufferSize]; |
| 421 | |
| 422 | m_bufPtr = DDEDefaultIPCBuffer; |
| 423 | m_bufSize = DDEDefaultIPCBufferSize; |
| 424 | m_topicName = ""; |
| 425 | } |
| 426 | |
| 427 | wxDDEConnection::~wxDDEConnection(void) |
| 428 | { |
| 429 | if (m_server) |
| 430 | m_server->GetConnections().DeleteObject(this); |
| 431 | else |
| 432 | m_client->GetConnections().DeleteObject(this); |
| 433 | } |
| 434 | |
| 435 | // Calls that CLIENT can make |
| 436 | bool wxDDEConnection::Disconnect(void) |
| 437 | { |
| 438 | DDEDeleteConnection((HCONV) m_hConv); |
| 439 | return (DdeDisconnect((HCONV) m_hConv) != 0); |
| 440 | } |
| 441 | |
| 442 | bool wxDDEConnection::Execute(char *data, int size, wxIPCFormat format) |
| 443 | { |
| 444 | DWORD result; |
| 445 | if (size < 0) |
| 446 | size = strlen(data); |
| 447 | |
| 448 | size ++; |
| 449 | |
| 450 | return (DdeClientTransaction((LPBYTE)data, size, (HCONV) m_hConv, |
| 451 | NULL, format, XTYP_EXECUTE, 5000, &result) ? TRUE : FALSE); |
| 452 | } |
| 453 | |
| 454 | char *wxDDEConnection::Request(const wxString& item, int *size, wxIPCFormat format) |
| 455 | { |
| 456 | DWORD result; |
| 457 | HSZ atom = DDEGetAtom(item); |
| 458 | |
| 459 | HDDEDATA returned_data = DdeClientTransaction(NULL, 0, (HCONV) m_hConv, |
| 460 | atom, format, XTYP_REQUEST, 5000, &result); |
| 461 | |
| 462 | DWORD len = DdeGetData(returned_data, (LPBYTE)(m_bufPtr), m_bufSize, 0); |
| 463 | |
| 464 | DdeFreeDataHandle(returned_data); |
| 465 | |
| 466 | if (size) *size = (int)len; |
| 467 | if (len > 0) |
| 468 | { |
| 469 | return m_bufPtr; |
| 470 | } |
| 471 | else return NULL; |
| 472 | } |
| 473 | |
| 474 | bool wxDDEConnection::Poke(const wxString& item, char *data, int size, wxIPCFormat format) |
| 475 | { |
| 476 | DWORD result; |
| 477 | if (size < 0) |
| 478 | size = strlen(data); |
| 479 | |
| 480 | size ++; |
| 481 | |
| 482 | HSZ item_atom = DDEGetAtom(item); |
| 483 | return (DdeClientTransaction((LPBYTE)data, size, (HCONV) m_hConv, |
| 484 | item_atom, format, XTYP_POKE, 5000, &result) ? TRUE : FALSE); |
| 485 | } |
| 486 | |
| 487 | bool wxDDEConnection::StartAdvise(const wxString& item) |
| 488 | { |
| 489 | DWORD result; |
| 490 | HSZ atom = DDEGetAtom(item); |
| 491 | |
| 492 | return (DdeClientTransaction(NULL, 0, (HCONV) m_hConv, |
| 493 | atom, CF_TEXT, XTYP_ADVSTART, 5000, &result) ? TRUE : FALSE); |
| 494 | } |
| 495 | |
| 496 | bool wxDDEConnection::StopAdvise(const wxString& item) |
| 497 | { |
| 498 | DWORD result; |
| 499 | HSZ atom = DDEGetAtom(item); |
| 500 | |
| 501 | return (DdeClientTransaction(NULL, 0, (HCONV) m_hConv, |
| 502 | atom, CF_TEXT, XTYP_ADVSTOP, 5000, &result) ? TRUE : FALSE); |
| 503 | } |
| 504 | |
| 505 | // Calls that SERVER can make |
| 506 | bool wxDDEConnection::Advise(const wxString& item, char *data, int size, wxIPCFormat format) |
| 507 | { |
| 508 | if (size < 0) |
| 509 | size = strlen(data); |
| 510 | |
| 511 | size ++; |
| 512 | |
| 513 | HSZ item_atom = DDEGetAtom(item); |
| 514 | HSZ topic_atom = DDEGetAtom(m_topicName); |
| 515 | m_sendingData = data; |
| 516 | m_dataSize = size; |
| 517 | m_dataType = format; |
| 518 | return (DdePostAdvise(DDEIdInst, topic_atom, item_atom) != 0); |
| 519 | } |
| 520 | |
| 521 | bool wxDDEConnection::OnDisconnect(void) |
| 522 | { |
| 523 | delete this; |
| 524 | return TRUE; |
| 525 | } |
| 526 | |
| 527 | |
| 528 | #define DDERETURN HDDEDATA |
| 529 | |
| 530 | HDDEDATA EXPENTRY _EXPORT _DDECallback( |
| 531 | WORD wType, |
| 532 | WORD wFmt, |
| 533 | HCONV hConv, |
| 534 | HSZ hsz1, |
| 535 | HSZ hsz2, |
| 536 | HDDEDATA hData, |
| 537 | DWORD /* lData1 */, |
| 538 | DWORD /* lData2 */) |
| 539 | { |
| 540 | switch (wType) |
| 541 | { |
| 542 | case XTYP_CONNECT: |
| 543 | { |
| 544 | char topic_buf[100]; |
| 545 | char server_buf[100]; |
| 546 | DdeQueryString(DDEIdInst, hsz1, (LPSTR)topic_buf, sizeof(topic_buf), |
| 547 | CP_WINANSI); |
| 548 | DdeQueryString(DDEIdInst, hsz2, (LPSTR)server_buf, sizeof(topic_buf), |
| 549 | CP_WINANSI); |
| 550 | wxDDEServer *server = DDEFindServer(server_buf); |
| 551 | if (server) |
| 552 | { |
| 553 | wxDDEConnection *connection = |
| 554 | (wxDDEConnection*) server->OnAcceptConnection(wxString(topic_buf)); |
| 555 | if (connection) |
| 556 | { |
| 557 | connection->m_server = server; |
| 558 | server->GetConnections().Append(connection); |
| 559 | connection->m_hConv = 0; |
| 560 | connection->m_topicName = topic_buf; |
| 561 | DDECurrentlyConnecting = connection; |
| 562 | return (DDERETURN)TRUE; |
| 563 | } |
| 564 | } |
| 565 | else return (DDERETURN)0; |
| 566 | break; |
| 567 | } |
| 568 | |
| 569 | case XTYP_CONNECT_CONFIRM: |
| 570 | { |
| 571 | if (DDECurrentlyConnecting) |
| 572 | { |
| 573 | DDECurrentlyConnecting->m_hConv = (WXHCONV) hConv; |
| 574 | DDECurrentlyConnecting = NULL; |
| 575 | return (DDERETURN)TRUE; |
| 576 | } |
| 577 | else return 0; |
| 578 | break; |
| 579 | } |
| 580 | |
| 581 | case XTYP_DISCONNECT: |
| 582 | { |
| 583 | wxDDEConnection *connection = DDEFindConnection(hConv); |
| 584 | if (connection && connection->OnDisconnect()) |
| 585 | { |
| 586 | DDEDeleteConnection(hConv); // Delete mapping: hConv => connection |
| 587 | return (DDERETURN)TRUE; |
| 588 | } |
| 589 | else return (DDERETURN)0; |
| 590 | break; |
| 591 | } |
| 592 | |
| 593 | case XTYP_EXECUTE: |
| 594 | { |
| 595 | wxDDEConnection *connection = DDEFindConnection(hConv); |
| 596 | |
| 597 | if (connection) |
| 598 | { |
| 599 | DWORD len = DdeGetData(hData, (LPBYTE)(connection->m_bufPtr), connection->m_bufSize, 0); |
| 600 | DdeFreeDataHandle(hData); |
| 601 | if (connection->OnExecute(connection->m_topicName, connection->m_bufPtr, (int)len, (wxIPCFormat) wFmt)) |
| 602 | return (DDERETURN)DDE_FACK; |
| 603 | else |
| 604 | return (DDERETURN)DDE_FNOTPROCESSED; |
| 605 | } else return (DDERETURN)DDE_FNOTPROCESSED; |
| 606 | break; |
| 607 | } |
| 608 | |
| 609 | case XTYP_REQUEST: |
| 610 | { |
| 611 | wxDDEConnection *connection = DDEFindConnection(hConv); |
| 612 | |
| 613 | if (connection) |
| 614 | { |
| 615 | char item_name[200]; |
| 616 | DdeQueryString(DDEIdInst, hsz2, (LPSTR)item_name, sizeof(item_name), |
| 617 | CP_WINANSI); |
| 618 | |
| 619 | int user_size = -1; |
| 620 | char *data = connection->OnRequest(connection->m_topicName, wxString(item_name), &user_size, (wxIPCFormat) wFmt); |
| 621 | if (data) |
| 622 | { |
| 623 | if (user_size < 0) user_size = strlen(data); |
| 624 | |
| 625 | HDDEDATA handle = DdeCreateDataHandle(DDEIdInst, |
| 626 | (LPBYTE)data, user_size + 1, 0, hsz2, wFmt, 0); |
| 627 | return (DDERETURN)handle; |
| 628 | } else return (DDERETURN)0; |
| 629 | } else return (DDERETURN)0; |
| 630 | break; |
| 631 | } |
| 632 | |
| 633 | case XTYP_POKE: |
| 634 | { |
| 635 | wxDDEConnection *connection = DDEFindConnection(hConv); |
| 636 | |
| 637 | if (connection) |
| 638 | { |
| 639 | char item_name[200]; |
| 640 | DdeQueryString(DDEIdInst, hsz2, (LPSTR)item_name, sizeof(item_name), |
| 641 | CP_WINANSI); |
| 642 | DWORD len = DdeGetData(hData, (LPBYTE)(connection->m_bufPtr), connection->m_bufSize, 0); |
| 643 | DdeFreeDataHandle(hData); |
| 644 | connection->OnPoke(connection->m_topicName, wxString(item_name), connection->m_bufPtr, (int)len, (wxIPCFormat) wFmt); |
| 645 | return (DDERETURN)DDE_FACK; |
| 646 | } else return (DDERETURN)DDE_FNOTPROCESSED; |
| 647 | break; |
| 648 | } |
| 649 | |
| 650 | case XTYP_ADVSTART: |
| 651 | { |
| 652 | wxDDEConnection *connection = DDEFindConnection(hConv); |
| 653 | |
| 654 | if (connection) |
| 655 | { |
| 656 | char item_name[200]; |
| 657 | DdeQueryString(DDEIdInst, hsz2, (LPSTR)item_name, sizeof(item_name), |
| 658 | CP_WINANSI); |
| 659 | |
| 660 | return (DDERETURN)connection->OnStartAdvise(connection->m_topicName, wxString(item_name)); |
| 661 | } else return (DDERETURN)0; |
| 662 | break; |
| 663 | } |
| 664 | |
| 665 | case XTYP_ADVSTOP: |
| 666 | { |
| 667 | wxDDEConnection *connection = DDEFindConnection(hConv); |
| 668 | |
| 669 | if (connection) |
| 670 | { |
| 671 | char item_name[200]; |
| 672 | DdeQueryString(DDEIdInst, hsz2, (LPSTR)item_name, sizeof(item_name), |
| 673 | CP_WINANSI); |
| 674 | return (DDERETURN)connection->OnStopAdvise(connection->m_topicName, wxString(item_name)); |
| 675 | } else return (DDERETURN)0; |
| 676 | break; |
| 677 | } |
| 678 | |
| 679 | case XTYP_ADVREQ: |
| 680 | { |
| 681 | wxDDEConnection *connection = DDEFindConnection(hConv); |
| 682 | |
| 683 | if (connection && connection->m_sendingData) |
| 684 | { |
| 685 | HDDEDATA data = DdeCreateDataHandle(DDEIdInst, |
| 686 | (LPBYTE)connection->m_sendingData, |
| 687 | connection->m_dataSize, 0, hsz2, connection->m_dataType, 0); |
| 688 | connection->m_sendingData = NULL; |
| 689 | return (DDERETURN)data; |
| 690 | } else return (DDERETURN)NULL; |
| 691 | break; |
| 692 | } |
| 693 | |
| 694 | case XTYP_ADVDATA: |
| 695 | { |
| 696 | wxDDEConnection *connection = DDEFindConnection(hConv); |
| 697 | |
| 698 | if (connection) |
| 699 | { |
| 700 | char item_name[200]; |
| 701 | DdeQueryString(DDEIdInst, hsz2, (LPSTR)item_name, sizeof(item_name), |
| 702 | CP_WINANSI); |
| 703 | |
| 704 | DWORD len = DdeGetData(hData, (LPBYTE)(connection->m_bufPtr), connection->m_bufSize, 0); |
| 705 | DdeFreeDataHandle(hData); |
| 706 | if (connection->OnAdvise(connection->m_topicName, wxString(item_name), connection->m_bufPtr, (int)len, (wxIPCFormat) wFmt)) |
| 707 | return (DDERETURN)DDE_FACK; |
| 708 | else |
| 709 | return (DDERETURN)DDE_FNOTPROCESSED; |
| 710 | } else return (DDERETURN)DDE_FNOTPROCESSED; |
| 711 | break; |
| 712 | } |
| 713 | } |
| 714 | return 0; |
| 715 | } |
| 716 | |
| 717 | // Atom table stuff |
| 718 | static HSZ DDEAddAtom(const wxString& string) |
| 719 | { |
| 720 | HSZ atom = DdeCreateStringHandle(DDEIdInst, (char*) (const char *)string, CP_WINANSI); |
| 721 | wxAtomTable.Append(string, (wxObject *)atom); |
| 722 | return atom; |
| 723 | } |
| 724 | |
| 725 | static HSZ DDEGetAtom(const wxString& string) |
| 726 | { |
| 727 | wxNode *node = wxAtomTable.Find(string); |
| 728 | if (node) |
| 729 | return (HSZ)node->Data(); |
| 730 | else |
| 731 | { |
| 732 | DDEAddAtom(string); |
| 733 | return (HSZ)(wxAtomTable.Find(string)->Data()); |
| 734 | } |
| 735 | } |
| 736 | |
| 737 | void DDEPrintError(void) |
| 738 | { |
| 739 | char *err = NULL; |
| 740 | switch (DdeGetLastError(DDEIdInst)) |
| 741 | { |
| 742 | case DMLERR_ADVACKTIMEOUT: |
| 743 | err = "A request for a synchronous advise transaction has timed out."; |
| 744 | break; |
| 745 | case DMLERR_BUSY: |
| 746 | err = "The response to the transaction caused the DDE_FBUSY bit to be set."; |
| 747 | break; |
| 748 | case DMLERR_DATAACKTIMEOUT: |
| 749 | err = "A request for a synchronous data transaction has timed out."; |
| 750 | break; |
| 751 | case DMLERR_DLL_NOT_INITIALIZED: |
| 752 | 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."; |
| 753 | break; |
| 754 | case DMLERR_DLL_USAGE: |
| 755 | 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."; |
| 756 | break; |
| 757 | case DMLERR_EXECACKTIMEOUT: |
| 758 | err = "A request for a synchronous execute transaction has timed out."; |
| 759 | break; |
| 760 | case DMLERR_INVALIDPARAMETER: |
| 761 | err = "A parameter failed to be validated by the DDEML."; |
| 762 | break; |
| 763 | case DMLERR_LOW_MEMORY: |
| 764 | err = "A DDEML application has created a prolonged race condition."; |
| 765 | break; |
| 766 | case DMLERR_MEMORY_ERROR: |
| 767 | err = "A memory allocation failed."; |
| 768 | break; |
| 769 | case DMLERR_NO_CONV_ESTABLISHED: |
| 770 | err = "A client's attempt to establish a conversation has failed."; |
| 771 | break; |
| 772 | case DMLERR_NOTPROCESSED: |
| 773 | err = "A transaction failed."; |
| 774 | break; |
| 775 | case DMLERR_POKEACKTIMEOUT: |
| 776 | err = "A request for a synchronous poke transaction has timed out."; |
| 777 | break; |
| 778 | case DMLERR_POSTMSG_FAILED: |
| 779 | err = "An internal call to the PostMessage function has failed. "; |
| 780 | break; |
| 781 | case DMLERR_REENTRANCY: |
| 782 | err = "Reentrancy problem."; |
| 783 | break; |
| 784 | case DMLERR_SERVER_DIED: |
| 785 | 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."; |
| 786 | break; |
| 787 | case DMLERR_SYS_ERROR: |
| 788 | err = "An internal error has occurred in the DDEML."; |
| 789 | break; |
| 790 | case DMLERR_UNADVACKTIMEOUT: |
| 791 | err = "A request to end an advise transaction has timed out."; |
| 792 | break; |
| 793 | case DMLERR_UNFOUND_QUEUE_ID: |
| 794 | 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."; |
| 795 | break; |
| 796 | default: |
| 797 | err = "Unrecognised error type."; |
| 798 | break; |
| 799 | } |
| 800 | MessageBox((HWND) NULL, (LPCSTR)err, "DDE Error", MB_OK | MB_ICONINFORMATION); |
| 801 | } |
| 802 | |
| 803 | #endif |
| 804 | // wxUSE_IPC |