dlls/ole32/tests/usrmarshal.c

   1 /*
   2  * User Marshaling Tests
   3  *
   4  * Copyright 2004-2006 Robert Shearman for CodeWeavers
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #define COBJMACROS
  22 #define CONST_VTABLE
  23 #include <stdarg.h>
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "objbase.h"
  28 #include "objidl.h"
  29
  30 #include "wine/test.h"
  31
  32 ULONG __RPC_USER HMETAFILE_UserSize(ULONG *, unsigned long, HMETAFILE *);
  33 unsigned char * __RPC_USER HMETAFILE_UserMarshal(ULONG *, unsigned char *, HMETAFILE *);
  34 unsigned char * __RPC_USER HMETAFILE_UserUnmarshal(ULONG *, unsigned char *, HMETAFILE *);
  35 void __RPC_USER HMETAFILE_UserFree(ULONG *, HMETAFILE *);
  36
  37 ULONG __RPC_USER HENHMETAFILE_UserSize(ULONG *, ULONG, HENHMETAFILE *);
  38 unsigned char * __RPC_USER HENHMETAFILE_UserMarshal  (ULONG *, unsigned char *, HENHMETAFILE *);
  39 unsigned char * __RPC_USER HENHMETAFILE_UserUnmarshal(ULONG *, unsigned char *, HENHMETAFILE *);
  40 void  __RPC_USER HENHMETAFILE_UserFree(ULONG *, HENHMETAFILE *);
  41
  42 ULONG __RPC_USER HMETAFILEPICT_UserSize(ULONG *, ULONG, HMETAFILEPICT *);
  43 unsigned char * __RPC_USER HMETAFILEPICT_UserMarshal  (ULONG *, unsigned char *, HMETAFILEPICT *);
  44 unsigned char * __RPC_USER HMETAFILEPICT_UserUnmarshal(ULONG *, unsigned char *, HMETAFILEPICT *);
  45 void __RPC_USER HMETAFILEPICT_UserFree(ULONG *, HMETAFILEPICT *);
  46
  47 static void * WINAPI user_allocate(SIZE_T size)
  48 {
  49     return CoTaskMemAlloc(size);
  50 }
  51
  52 static void WINAPI user_free(void *p)
  53 {
  54     CoTaskMemFree(p);
  55 }
  56
  57 static void init_user_marshal_cb(USER_MARSHAL_CB *umcb,
  58                                  PMIDL_STUB_MESSAGE stub_msg,
  59                                  PRPC_MESSAGE rpc_msg, unsigned char *buffer,
  60                                  unsigned int size, MSHCTX context)
  61 {
  62     memset(rpc_msg, 0, sizeof(*rpc_msg));
  63     rpc_msg->Buffer = buffer;
  64     rpc_msg->BufferLength = size;
  65
  66     memset(stub_msg, 0, sizeof(*stub_msg));
  67     stub_msg->RpcMsg = rpc_msg;
  68     stub_msg->Buffer = buffer;
  69     stub_msg->pfnAllocate = user_allocate;
  70     stub_msg->pfnFree = user_free;
  71
  72     memset(umcb, 0, sizeof(*umcb));
  73     umcb->Flags = MAKELONG(context, NDR_LOCAL_DATA_REPRESENTATION);
  74     umcb->pStubMsg = stub_msg;
  75     umcb->Signature = USER_MARSHAL_CB_SIGNATURE;
  76     umcb->CBType = buffer ? USER_MARSHAL_CB_UNMARSHALL : USER_MARSHAL_CB_BUFFER_SIZE;
  77 }
  78
  79 static const char cf_marshaled[] =
  80 {
  81     0x9, 0x0, 0x0, 0x0,
  82     0x0, 0x0, 0x0, 0x0,
  83     0x9, 0x0, 0x0, 0x0,
  84     'M', 0x0, 'y', 0x0,
  85     'F', 0x0, 'o', 0x0,
  86     'r', 0x0, 'm', 0x0,
  87     'a', 0x0, 't', 0x0,
  88     0x0, 0x0
  89 };
  90
  91 static void test_marshal_CLIPFORMAT(void)
  92 {
  93     USER_MARSHAL_CB umcb;
  94     MIDL_STUB_MESSAGE stub_msg;
  95     RPC_MESSAGE rpc_msg;
  96     unsigned char *buffer;
  97     ULONG i, size;
  98     CLIPFORMAT cf = RegisterClipboardFormatA("MyFormat");
  99     CLIPFORMAT cf2;
 100
 101     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 102     size = CLIPFORMAT_UserSize(&umcb.Flags, 0, &cf);
 103     ok(size == 8 + sizeof(cf_marshaled) ||
 104        broken(size == 12 + sizeof(cf_marshaled)) ||  /* win64 adds 4 extra (unused) bytes */
 105        broken(size == 8 + sizeof(cf_marshaled) - 2), /* win9x and winnt don't include the '\0' */
 106               "CLIPFORMAT: Wrong size %d\n", size);
 107
 108     buffer = HeapAlloc(GetProcessHeap(), 0, size);
 109     memset( buffer, 0xcc, size );
 110     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 111     CLIPFORMAT_UserMarshal(&umcb.Flags, buffer, &cf);
 112     ok(*(LONG *)(buffer + 0) == WDT_REMOTE_CALL, "CLIPFORMAT: Context should be WDT_REMOTE_CALL instead of 0x%08x\n", *(LONG *)(buffer + 0));
 113     ok(*(DWORD *)(buffer + 4) == cf, "CLIPFORMAT: Marshaled value should be 0x%04x instead of 0x%04x\n", cf, *(DWORD *)(buffer + 4));
 114     ok(!memcmp(buffer + 8, cf_marshaled, min( sizeof(cf_marshaled), size-8 )), "Marshaled data differs\n");
 115     if (size > sizeof(cf_marshaled) + 8)  /* make sure the extra bytes are not used */
 116         for (i = sizeof(cf_marshaled) + 8; i < size; i++)
 117             ok( buffer[i] == 0xcc, "buffer offset %u has been set to %x\n", i, buffer[i] );
 118
 119     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 120     CLIPFORMAT_UserUnmarshal(&umcb.Flags, buffer, &cf2);
 121     ok(cf == cf2, "CLIPFORMAT: Didn't unmarshal properly\n");
 122     HeapFree(GetProcessHeap(), 0, buffer);
 123
 124     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 125     CLIPFORMAT_UserFree(&umcb.Flags, &cf2);
 126 }
 127
 128 static void test_marshal_HWND(void)
 129 {
 130     USER_MARSHAL_CB umcb;
 131     MIDL_STUB_MESSAGE stub_msg;
 132     RPC_MESSAGE rpc_msg;
 133     unsigned char *buffer;
 134     ULONG size;
 135     HWND hwnd = GetDesktopWindow();
 136     HWND hwnd2;
 137     wireHWND wirehwnd;
 138
 139     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_LOCAL);
 140     size = HWND_UserSize(&umcb.Flags, 0, &hwnd);
 141     ok(size == sizeof(*wirehwnd), "Wrong size %d\n", size);
 142
 143     buffer = HeapAlloc(GetProcessHeap(), 0, size);
 144     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_LOCAL);
 145     HWND_UserMarshal(&umcb.Flags, buffer, &hwnd);
 146     wirehwnd = (wireHWND)buffer;
 147     ok(wirehwnd->fContext == WDT_INPROC_CALL, "Context should be WDT_INPROC_CALL instead of 0x%08x\n", wirehwnd->fContext);
 148     ok(wirehwnd->u.hInproc == (LONG_PTR)hwnd, "Marshaled value should be %p instead of %x\n", hwnd, wirehwnd->u.hRemote);
 149
 150     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_LOCAL);
 151     HWND_UserUnmarshal(&umcb.Flags, buffer, &hwnd2);
 152     ok(hwnd == hwnd2, "Didn't unmarshal properly\n");
 153     HeapFree(GetProcessHeap(), 0, buffer);
 154
 155     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_LOCAL);
 156     HWND_UserFree(&umcb.Flags, &hwnd2);
 157 }
 158
 159 static void test_marshal_HGLOBAL(void)
 160 {
 161     USER_MARSHAL_CB umcb;
 162     MIDL_STUB_MESSAGE stub_msg;
 163     RPC_MESSAGE rpc_msg;
 164     unsigned char *buffer;
 165     ULONG size, block_size;
 166     HGLOBAL hglobal;
 167     HGLOBAL hglobal2;
 168     unsigned char *wirehglobal;
 169     int i;
 170
 171     hglobal = NULL;
 172     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_LOCAL);
 173     size = HGLOBAL_UserSize(&umcb.Flags, 0, &hglobal);
 174     /* native is poorly programmed and allocates 4/8 bytes more than it needs to
 175      * here - Wine doesn't have to emulate that */
 176     ok((size == 8) || broken(size == 12) || broken(size == 16), "Size should be 8, instead of %d\n", size);
 177     buffer = HeapAlloc(GetProcessHeap(), 0, size);
 178     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_LOCAL);
 179     HGLOBAL_UserMarshal(&umcb.Flags, buffer, &hglobal);
 180     wirehglobal = buffer;
 181     ok(*(ULONG *)wirehglobal == WDT_REMOTE_CALL, "Context should be WDT_REMOTE_CALL instead of 0x%08x\n", *(ULONG *)wirehglobal);
 182     wirehglobal += sizeof(ULONG);
 183     ok(*(ULONG *)wirehglobal == 0, "buffer+4 should be HGLOBAL\n");
 184     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_LOCAL);
 185     HGLOBAL_UserUnmarshal(&umcb.Flags, buffer, &hglobal2);
 186     ok(hglobal2 == hglobal, "Didn't unmarshal properly\n");
 187     HeapFree(GetProcessHeap(), 0, buffer);
 188     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_LOCAL);
 189     HGLOBAL_UserFree(&umcb.Flags, &hglobal2);
 190
 191
 192     for(block_size = 0; block_size <= 17; block_size++)
 193     {
 194         ULONG actual_size, expected_size;
 195
 196         hglobal = GlobalAlloc(0, block_size);
 197         buffer = GlobalLock(hglobal);
 198         for (i = 0; i < block_size; i++)
 199             buffer[i] = i;
 200         GlobalUnlock(hglobal);
 201         actual_size = GlobalSize(hglobal);
 202         expected_size = actual_size + 5 * sizeof(DWORD);
 203         trace("%d: actual size %d\n", block_size, actual_size);
 204         init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_LOCAL);
 205         size = HGLOBAL_UserSize(&umcb.Flags, 0, &hglobal);
 206         /* native is poorly programmed and allocates 4/8 bytes more than it needs to
 207          * here - Wine doesn't have to emulate that */
 208         ok(size == expected_size ||
 209            broken(size == expected_size + 4) ||
 210            broken(size == expected_size + 8),
 211            "%d: got size %d\n", block_size, size);
 212         buffer = HeapAlloc(GetProcessHeap(), 0, size);
 213         init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_LOCAL);
 214         HGLOBAL_UserMarshal(&umcb.Flags, buffer, &hglobal);
 215         wirehglobal = buffer;
 216         ok(*(ULONG *)wirehglobal == WDT_REMOTE_CALL, "Context should be WDT_REMOTE_CALL instead of 0x%08x\n", *(ULONG *)wirehglobal);
 217         wirehglobal += sizeof(ULONG);
 218         ok(*(ULONG *)wirehglobal == (ULONG)(ULONG_PTR)hglobal, "buffer+0x4 should be HGLOBAL\n");
 219         wirehglobal += sizeof(ULONG);
 220         ok(*(ULONG *)wirehglobal == actual_size, "%d: buffer+0x8 %08x\n", block_size, *(ULONG *)wirehglobal);
 221         wirehglobal += sizeof(ULONG);
 222         ok(*(ULONG *)wirehglobal == (ULONG)(ULONG_PTR)hglobal, "buffer+0xc should be HGLOBAL\n");
 223         wirehglobal += sizeof(ULONG);
 224         ok(*(ULONG *)wirehglobal == actual_size, "%d: buffer+0x10 %08x\n", block_size, *(ULONG *)wirehglobal);
 225         wirehglobal += sizeof(ULONG);
 226         for (i = 0; i < block_size; i++)
 227             ok(wirehglobal[i] == i, "buffer+0x%x should be %d\n", 0x10 + i, i);
 228
 229         init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_LOCAL);
 230         HGLOBAL_UserUnmarshal(&umcb.Flags, buffer, &hglobal2);
 231         ok(hglobal2 != NULL, "Didn't unmarshal properly\n");
 232         HeapFree(GetProcessHeap(), 0, buffer);
 233         init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_LOCAL);
 234         HGLOBAL_UserFree(&umcb.Flags, &hglobal2);
 235         GlobalFree(hglobal);
 236     }
 237 }
 238
 239 static HENHMETAFILE create_emf(void)
 240 {
 241     const RECT rect = {0, 0, 100, 100};
 242     HDC hdc = CreateEnhMetaFile(NULL, NULL, &rect, "HENHMETAFILE Marshaling Test\0Test\0\0");
 243     ExtTextOut(hdc, 0, 0, ETO_OPAQUE, &rect, "Test String", strlen("Test String"), NULL);
 244     return CloseEnhMetaFile(hdc);
 245 }
 246
 247 static void test_marshal_HENHMETAFILE(void)
 248 {
 249     USER_MARSHAL_CB umcb;
 250     MIDL_STUB_MESSAGE stub_msg;
 251     RPC_MESSAGE rpc_msg;
 252     unsigned char *buffer;
 253     ULONG size;
 254     HENHMETAFILE hemf;
 255     HENHMETAFILE hemf2 = NULL;
 256     unsigned char *wirehemf;
 257
 258     hemf = create_emf();
 259
 260     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 261     size = HENHMETAFILE_UserSize(&umcb.Flags, 0, &hemf);
 262     ok(size > 20, "size should be at least 20 bytes, not %d\n", size);
 263     buffer = HeapAlloc(GetProcessHeap(), 0, size);
 264     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 265     HENHMETAFILE_UserMarshal(&umcb.Flags, buffer, &hemf);
 266     wirehemf = buffer;
 267     ok(*(DWORD *)wirehemf == WDT_REMOTE_CALL, "wirestgm + 0x0 should be WDT_REMOTE_CALL instead of 0x%08x\n", *(DWORD *)wirehemf);
 268     wirehemf += sizeof(DWORD);
 269     ok(*(DWORD *)wirehemf == (DWORD)(DWORD_PTR)hemf, "wirestgm + 0x4 should be hemf instead of 0x%08x\n", *(DWORD *)wirehemf);
 270     wirehemf += sizeof(DWORD);
 271     ok(*(DWORD *)wirehemf == (size - 0x10), "wirestgm + 0x8 should be size - 0x10 instead of 0x%08x\n", *(DWORD *)wirehemf);
 272     wirehemf += sizeof(DWORD);
 273     ok(*(DWORD *)wirehemf == (size - 0x10), "wirestgm + 0xc should be size - 0x10 instead of 0x%08x\n", *(DWORD *)wirehemf);
 274     wirehemf += sizeof(DWORD);
 275     ok(*(DWORD *)wirehemf == EMR_HEADER, "wirestgm + 0x10 should be EMR_HEADER instead of %d\n", *(DWORD *)wirehemf);
 276     wirehemf += sizeof(DWORD);
 277     /* ... rest of data not tested - refer to tests for GetEnhMetaFileBits
 278      * at this point */
 279
 280     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 281     HENHMETAFILE_UserUnmarshal(&umcb.Flags, buffer, &hemf2);
 282     ok(hemf2 != NULL, "HENHMETAFILE didn't unmarshal\n");
 283     HeapFree(GetProcessHeap(), 0, buffer);
 284     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 285     HENHMETAFILE_UserFree(&umcb.Flags, &hemf2);
 286     DeleteEnhMetaFile(hemf);
 287
 288     /* test NULL emf */
 289     hemf = NULL;
 290
 291     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 292     size = HENHMETAFILE_UserSize(&umcb.Flags, 0, &hemf);
 293     ok(size == 8, "size should be 8 bytes, not %d\n", size);
 294     buffer = HeapAlloc(GetProcessHeap(), 0, size);
 295     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 296     HENHMETAFILE_UserMarshal(&umcb.Flags, buffer, &hemf);
 297     wirehemf = buffer;
 298     ok(*(DWORD *)wirehemf == WDT_REMOTE_CALL, "wirestgm + 0x0 should be WDT_REMOTE_CALL instead of 0x%08x\n", *(DWORD *)wirehemf);
 299     wirehemf += sizeof(DWORD);
 300     ok(*(DWORD *)wirehemf == (DWORD)(DWORD_PTR)hemf, "wirestgm + 0x4 should be hemf instead of 0x%08x\n", *(DWORD *)wirehemf);
 301     wirehemf += sizeof(DWORD);
 302
 303     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 304     HENHMETAFILE_UserUnmarshal(&umcb.Flags, buffer, &hemf2);
 305     ok(hemf2 == NULL, "NULL HENHMETAFILE didn't unmarshal\n");
 306     HeapFree(GetProcessHeap(), 0, buffer);
 307     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 308     HENHMETAFILE_UserFree(&umcb.Flags, &hemf2);
 309 }
 310
 311 static HMETAFILE create_mf(void)
 312 {
 313     RECT rect = {0, 0, 100, 100};
 314     HDC hdc = CreateMetaFile(NULL);
 315     ExtTextOut(hdc, 0, 0, ETO_OPAQUE, &rect, "Test String", strlen("Test String"), NULL);
 316     return CloseMetaFile(hdc);
 317 }
 318
 319 static void test_marshal_HMETAFILE(void)
 320 {
 321     USER_MARSHAL_CB umcb;
 322     MIDL_STUB_MESSAGE stub_msg;
 323     RPC_MESSAGE rpc_msg;
 324     unsigned char *buffer;
 325     ULONG size;
 326     HMETAFILE hmf;
 327     HMETAFILE hmf2 = NULL;
 328     unsigned char *wirehmf;
 329
 330     hmf = create_mf();
 331
 332     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 333     size = HMETAFILE_UserSize(&umcb.Flags, 0, &hmf);
 334     ok(size > 20, "size should be at least 20 bytes, not %d\n", size);
 335     buffer = HeapAlloc(GetProcessHeap(), 0, size);
 336     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 337     HMETAFILE_UserMarshal(&umcb.Flags, buffer, &hmf);
 338     wirehmf = buffer;
 339     ok(*(DWORD *)wirehmf == WDT_REMOTE_CALL, "wirestgm + 0x0 should be WDT_REMOTE_CALL instead of 0x%08x\n", *(DWORD *)wirehmf);
 340     wirehmf += sizeof(DWORD);
 341     ok(*(DWORD *)wirehmf == (DWORD)(DWORD_PTR)hmf, "wirestgm + 0x4 should be hmf instead of 0x%08x\n", *(DWORD *)wirehmf);
 342     wirehmf += sizeof(DWORD);
 343     ok(*(DWORD *)wirehmf == (size - 0x10), "wirestgm + 0x8 should be size - 0x10 instead of 0x%08x\n", *(DWORD *)wirehmf);
 344     wirehmf += sizeof(DWORD);
 345     ok(*(DWORD *)wirehmf == (size - 0x10), "wirestgm + 0xc should be size - 0x10 instead of 0x%08x\n", *(DWORD *)wirehmf);
 346     wirehmf += sizeof(DWORD);
 347     ok(*(WORD *)wirehmf == 1, "wirestgm + 0x10 should be 1 instead of 0x%08x\n", *(DWORD *)wirehmf);
 348     wirehmf += sizeof(DWORD);
 349     /* ... rest of data not tested - refer to tests for GetMetaFileBits
 350      * at this point */
 351
 352     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 353     HMETAFILE_UserUnmarshal(&umcb.Flags, buffer, &hmf2);
 354     ok(hmf2 != NULL, "HMETAFILE didn't unmarshal\n");
 355     HeapFree(GetProcessHeap(), 0, buffer);
 356     HMETAFILE_UserFree(&umcb.Flags, &hmf2);
 357     DeleteMetaFile(hmf);
 358
 359     /* test NULL emf */
 360     hmf = NULL;
 361
 362     size = HMETAFILE_UserSize(&umcb.Flags, 0, &hmf);
 363     ok(size == 8, "size should be 8 bytes, not %d\n", size);
 364     buffer = HeapAlloc(GetProcessHeap(), 0, size);
 365     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 366     HMETAFILE_UserMarshal(&umcb.Flags, buffer, &hmf);
 367     wirehmf = buffer;
 368     ok(*(DWORD *)wirehmf == WDT_REMOTE_CALL, "wirestgm + 0x0 should be WDT_REMOTE_CALL instead of 0x%08x\n", *(DWORD *)wirehmf);
 369     wirehmf += sizeof(DWORD);
 370     ok(*(DWORD *)wirehmf == (DWORD)(DWORD_PTR)hmf, "wirestgm + 0x4 should be hmf instead of 0x%08x\n", *(DWORD *)wirehmf);
 371     wirehmf += sizeof(DWORD);
 372
 373     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 374     HMETAFILE_UserUnmarshal(&umcb.Flags, buffer, &hmf2);
 375     ok(hmf2 == NULL, "NULL HMETAFILE didn't unmarshal\n");
 376     HeapFree(GetProcessHeap(), 0, buffer);
 377     HMETAFILE_UserFree(&umcb.Flags, &hmf2);
 378 }
 379
 380 #define USER_MARSHAL_PTR_PREFIX \
 381   ( (DWORD)'U'         | ( (DWORD)'s' << 8 ) | \
 382   ( (DWORD)'e' << 16 ) | ( (DWORD)'r' << 24 ) )
 383
 384 static void test_marshal_HMETAFILEPICT(void)
 385 {
 386     USER_MARSHAL_CB umcb;
 387     MIDL_STUB_MESSAGE stub_msg;
 388     RPC_MESSAGE rpc_msg;
 389     unsigned char *buffer, *buffer_end;
 390     ULONG size;
 391     HMETAFILEPICT hmfp;
 392     HMETAFILEPICT hmfp2 = NULL;
 393     METAFILEPICT *pmfp;
 394     unsigned char *wirehmfp;
 395
 396     hmfp = GlobalAlloc(GMEM_MOVEABLE, sizeof(*pmfp));
 397     pmfp = GlobalLock(hmfp);
 398     pmfp->mm = MM_ISOTROPIC;
 399     pmfp->xExt = 1;
 400     pmfp->yExt = 2;
 401     pmfp->hMF = create_mf();
 402     GlobalUnlock(hmfp);
 403
 404     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 405     size = HMETAFILEPICT_UserSize(&umcb.Flags, 0, &hmfp);
 406     ok(size > 20, "size should be at least 20 bytes, not %d\n", size);
 407     trace("size is %d\n", size);
 408     buffer = HeapAlloc(GetProcessHeap(), 0, size);
 409     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 410     buffer_end = HMETAFILEPICT_UserMarshal(&umcb.Flags, buffer, &hmfp);
 411     wirehmfp = buffer;
 412     ok(*(DWORD *)wirehmfp == WDT_REMOTE_CALL, "wirestgm + 0x0 should be WDT_REMOTE_CALL instead of 0x%08x\n", *(DWORD *)wirehmfp);
 413     wirehmfp += sizeof(DWORD);
 414     ok(*(DWORD *)wirehmfp == (DWORD)(DWORD_PTR)hmfp, "wirestgm + 0x4 should be hmf instead of 0x%08x\n", *(DWORD *)wirehmfp);
 415     wirehmfp += sizeof(DWORD);
 416     ok(*(DWORD *)wirehmfp == MM_ISOTROPIC, "wirestgm + 0x8 should be MM_ISOTROPIC instead of 0x%08x\n", *(DWORD *)wirehmfp);
 417     wirehmfp += sizeof(DWORD);
 418     ok(*(DWORD *)wirehmfp == 1, "wirestgm + 0xc should be 1 instead of 0x%08x\n", *(DWORD *)wirehmfp);
 419     wirehmfp += sizeof(DWORD);
 420     ok(*(DWORD *)wirehmfp == 2, "wirestgm + 0x10 should be 2 instead of 0x%08x\n", *(DWORD *)wirehmfp);
 421     wirehmfp += sizeof(DWORD);
 422     ok(*(DWORD *)wirehmfp == USER_MARSHAL_PTR_PREFIX, "wirestgm + 0x14 should be \"User\" instead of 0x%08x\n", *(DWORD *)wirehmfp);
 423     wirehmfp += sizeof(DWORD);
 424     ok(*(DWORD *)wirehmfp == WDT_REMOTE_CALL, "wirestgm + 0x18 should be WDT_REMOTE_CALL instead of 0x%08x\n", *(DWORD *)wirehmfp);
 425     wirehmfp += sizeof(DWORD);
 426     pmfp = GlobalLock(hmfp);
 427     ok(*(DWORD *)wirehmfp == (DWORD)(DWORD_PTR)pmfp->hMF, "wirestgm + 0x1c should be pmfp->hMF instead of 0x%08x\n", *(DWORD *)wirehmfp);
 428     GlobalUnlock(hmfp);
 429     wirehmfp += sizeof(DWORD);
 430     /* Note use (buffer_end - buffer) instead of size here, because size is an
 431      * overestimate with native */
 432     ok(*(DWORD *)wirehmfp == (buffer_end - buffer - 0x28), "wirestgm + 0x20 should be size - 0x34 instead of 0x%08x\n", *(DWORD *)wirehmfp);
 433     wirehmfp += sizeof(DWORD);
 434     ok(*(DWORD *)wirehmfp == (buffer_end - buffer - 0x28), "wirestgm + 0x24 should be size - 0x34 instead of 0x%08x\n", *(DWORD *)wirehmfp);
 435     wirehmfp += sizeof(DWORD);
 436     ok(*(WORD *)wirehmfp == 1, "wirehmfp + 0x28 should be 1 instead of 0x%08x\n", *(DWORD *)wirehmfp);
 437     wirehmfp += sizeof(DWORD);
 438     /* ... rest of data not tested - refer to tests for GetMetaFileBits
 439      * at this point */
 440
 441     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 442     HMETAFILEPICT_UserUnmarshal(&umcb.Flags, buffer, &hmfp2);
 443     ok(hmfp2 != NULL, "HMETAFILEPICT didn't unmarshal\n");
 444     HeapFree(GetProcessHeap(), 0, buffer);
 445     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 446     HMETAFILEPICT_UserFree(&umcb.Flags, &hmfp2);
 447     pmfp = GlobalLock(hmfp);
 448     DeleteMetaFile(pmfp->hMF);
 449     GlobalUnlock(hmfp);
 450     GlobalFree(hmfp);
 451
 452     /* test NULL emf */
 453     hmfp = NULL;
 454
 455     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 456     size = HMETAFILEPICT_UserSize(&umcb.Flags, 0, &hmfp);
 457     ok(size == 8, "size should be 8 bytes, not %d\n", size);
 458     buffer = HeapAlloc(GetProcessHeap(), 0, size);
 459     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 460     HMETAFILEPICT_UserMarshal(&umcb.Flags, buffer, &hmfp);
 461     wirehmfp = buffer;
 462     ok(*(DWORD *)wirehmfp == WDT_REMOTE_CALL, "wirestgm + 0x0 should be WDT_REMOTE_CALL instead of 0x%08x\n", *(DWORD *)wirehmfp);
 463     wirehmfp += sizeof(DWORD);
 464     ok(*(DWORD *)wirehmfp == (DWORD)(DWORD_PTR)hmfp, "wirestgm + 0x4 should be hmf instead of 0x%08x\n", *(DWORD *)wirehmfp);
 465     wirehmfp += sizeof(DWORD);
 466
 467     hmfp2 = NULL;
 468     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 469     HMETAFILEPICT_UserUnmarshal(&umcb.Flags, buffer, &hmfp2);
 470     ok(hmfp2 == NULL, "NULL HMETAFILE didn't unmarshal\n");
 471     HeapFree(GetProcessHeap(), 0, buffer);
 472     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 473     HMETAFILEPICT_UserFree(&umcb.Flags, &hmfp2);
 474 }
 475
 476 static HRESULT WINAPI Test_IUnknown_QueryInterface(
 477                                                    LPUNKNOWN iface,
 478                                                    REFIID riid,
 479                                                    LPVOID *ppvObj)
 480 {
 481     if (ppvObj == NULL) return E_POINTER;
 482
 483     if (IsEqualGUID(riid, &IID_IUnknown))
 484     {
 485         *ppvObj = iface;
 486         IUnknown_AddRef(iface);
 487         return S_OK;
 488     }
 489
 490     *ppvObj = NULL;
 491     return E_NOINTERFACE;
 492 }
 493
 494 static ULONG WINAPI Test_IUnknown_AddRef(LPUNKNOWN iface)
 495 {
 496     return 2; /* non-heap-based object */
 497 }
 498
 499 static ULONG WINAPI Test_IUnknown_Release(LPUNKNOWN iface)
 500 {
 501     return 1; /* non-heap-based object */
 502 }
 503
 504 static const IUnknownVtbl TestUnknown_Vtbl =
 505 {
 506     Test_IUnknown_QueryInterface,
 507     Test_IUnknown_AddRef,
 508     Test_IUnknown_Release,
 509 };
 510
 511 static HRESULT WINAPI Test_IStream_QueryInterface(IStream *iface,
 512                                                   REFIID riid, LPVOID *ppvObj)
 513 {
 514     if (ppvObj == NULL) return E_POINTER;
 515
 516     if (IsEqualIID(riid, &IID_IUnknown) ||
 517         IsEqualIID(riid, &IID_IStream))
 518     {
 519         *ppvObj = iface;
 520         IStream_AddRef(iface);
 521         return S_OK;
 522     }
 523
 524     *ppvObj = NULL;
 525     return E_NOINTERFACE;
 526 }
 527
 528 static ULONG WINAPI Test_IStream_AddRef(IStream *iface)
 529 {
 530     return 2; /* non-heap-based object */
 531 }
 532
 533 static ULONG WINAPI Test_IStream_Release(IStream *iface)
 534 {
 535     return 1; /* non-heap-based object */
 536 }
 537
 538 static const IStreamVtbl TestStream_Vtbl =
 539 {
 540     Test_IStream_QueryInterface,
 541     Test_IStream_AddRef,
 542     Test_IStream_Release
 543     /* the rest can be NULLs */
 544 };
 545
 546 static IUnknown Test_Unknown = { &TestUnknown_Vtbl };
 547 static IStream Test_Stream = { &TestStream_Vtbl };
 548
 549 ULONG __RPC_USER WdtpInterfacePointer_UserSize(ULONG *, ULONG, ULONG, IUnknown *, REFIID);
 550 unsigned char * __RPC_USER WdtpInterfacePointer_UserMarshal(ULONG *, ULONG, unsigned char *, IUnknown *, REFIID);
 551 unsigned char * __RPC_USER WdtpInterfacePointer_UserUnmarshal(ULONG *, unsigned char *, IUnknown **, REFIID);
 552 void __RPC_USER WdtpInterfacePointer_UserFree(IUnknown *);
 553
 554 static void marshal_WdtpInterfacePointer(DWORD umcb_ctx, DWORD ctx)
 555 {
 556     USER_MARSHAL_CB umcb;
 557     MIDL_STUB_MESSAGE stub_msg;
 558     RPC_MESSAGE rpc_msg;
 559     unsigned char *buffer, *buffer_end;
 560     ULONG size;
 561     IUnknown *unk;
 562     IUnknown *unk2;
 563     unsigned char *wireip;
 564     HGLOBAL h = GlobalAlloc(GMEM_MOVEABLE, 0);
 565     IStream *stm;
 566     void *marshal_data;
 567     LARGE_INTEGER zero;
 568     ULARGE_INTEGER pos;
 569     DWORD marshal_size;
 570
 571     /* shows that the WdtpInterfacePointer functions don't marshal anything for
 572      * NULL pointers, so code using these functions must handle that case
 573      * itself */
 574
 575     unk = NULL;
 576     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, umcb_ctx);
 577     size = WdtpInterfacePointer_UserSize(&umcb.Flags, ctx, 0, unk, &IID_IUnknown);
 578     ok(size == 0, "size should be 0 bytes, not %d\n", size);
 579     buffer = HeapAlloc(GetProcessHeap(), 0, size);
 580     buffer_end = WdtpInterfacePointer_UserMarshal(&umcb.Flags, ctx, buffer, unk, &IID_IUnknown);
 581     wireip = buffer;
 582     HeapFree(GetProcessHeap(), 0, buffer);
 583
 584     /* Now for a non-NULL pointer. The marshalled data are two size DWORDS and then
 585        the result of CoMarshalInterface called with the LOWORD of the ctx */
 586
 587     unk = &Test_Unknown;
 588
 589     CreateStreamOnHGlobal(h, TRUE, &stm);
 590     CoMarshalInterface(stm, &IID_IUnknown, unk, LOWORD(ctx), NULL, MSHLFLAGS_NORMAL);
 591     zero.QuadPart = 0;
 592     IStream_Seek(stm, zero, STREAM_SEEK_CUR, &pos);
 593     marshal_size = pos.u.LowPart;
 594     marshal_data = GlobalLock(h);
 595     trace("marshal_size %x\n", marshal_size);
 596
 597     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, umcb_ctx);
 598     size = WdtpInterfacePointer_UserSize(&umcb.Flags, ctx, 0, unk, &IID_IUnknown);
 599     ok(size >= marshal_size + 2 * sizeof(DWORD), "marshal size %x got %x\n", marshal_size, size);
 600     trace("WdtpInterfacePointer_UserSize returned %x\n", size);
 601     buffer = HeapAlloc(GetProcessHeap(), 0, size);
 602     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, umcb_ctx);
 603     buffer_end = WdtpInterfacePointer_UserMarshal(&umcb.Flags, ctx, buffer, unk, &IID_IUnknown);
 604     wireip = buffer;
 605
 606     ok(buffer_end == buffer + marshal_size + 2 * sizeof(DWORD), "buffer_end %p buffer %p (diff %x)\n", buffer_end, buffer, buffer_end - buffer);
 607
 608     ok(*(DWORD *)wireip == marshal_size, "wireip + 0x0 should be %x instead of %x\n", marshal_size, *(DWORD *)wireip);
 609     wireip += sizeof(DWORD);
 610     ok(*(DWORD *)wireip == marshal_size, "wireip + 0x4 should be %x instead of %x\n", marshal_size, *(DWORD *)wireip);
 611     wireip += sizeof(DWORD);
 612
 613     ok(!memcmp(marshal_data, wireip, marshal_size), "buffer mismatch\n");
 614     GlobalUnlock(h);
 615     zero.QuadPart = 0;
 616     IStream_Seek(stm, zero, STREAM_SEEK_SET, NULL);
 617     CoReleaseMarshalData(stm);
 618     IStream_Release(stm);
 619
 620     unk2 = NULL;
 621     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, umcb_ctx);
 622     WdtpInterfacePointer_UserUnmarshal(&umcb.Flags, buffer, &unk2, &IID_IUnknown);
 623     ok(unk2 != NULL, "IUnknown object didn't unmarshal properly\n");
 624     HeapFree(GetProcessHeap(), 0, buffer);
 625     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_INPROC);
 626     WdtpInterfacePointer_UserFree(unk2);
 627 }
 628
 629 static void test_marshal_WdtpInterfacePointer(void)
 630 {
 631     /*
 632      * There are two places where we can pass the marshalling ctx: as
 633      * part of the umcb and as a separate flag.  The loword of that
 634      * separate flag field is what matters.
 635      */
 636
 637     /* All three are marshalled as inproc */
 638     marshal_WdtpInterfacePointer(MSHCTX_INPROC, MSHCTX_INPROC);
 639     marshal_WdtpInterfacePointer(MSHCTX_DIFFERENTMACHINE, MSHCTX_INPROC);
 640     marshal_WdtpInterfacePointer(MSHCTX_INPROC, MAKELONG(MSHCTX_INPROC, 0xffff));
 641
 642     /* All three are marshalled as remote */
 643     marshal_WdtpInterfacePointer(MSHCTX_INPROC, MSHCTX_DIFFERENTMACHINE);
 644     marshal_WdtpInterfacePointer(MSHCTX_DIFFERENTMACHINE, MSHCTX_DIFFERENTMACHINE);
 645     marshal_WdtpInterfacePointer(MSHCTX_INPROC, MAKELONG(MSHCTX_DIFFERENTMACHINE, 0xffff));
 646 }
 647
 648 static void test_marshal_STGMEDIUM(void)
 649 {
 650     USER_MARSHAL_CB umcb;
 651     MIDL_STUB_MESSAGE stub_msg;
 652     RPC_MESSAGE rpc_msg;
 653     unsigned char *buffer, *buffer_end, *expect_buffer, *expect_buffer_end;
 654     ULONG size, expect_size;
 655     STGMEDIUM med, med2;
 656     IUnknown *unk = &Test_Unknown;
 657     IStream *stm = &Test_Stream;
 658
 659     /* TYMED_NULL with pUnkForRelease */
 660
 661     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 662     expect_size = WdtpInterfacePointer_UserSize(&umcb.Flags, umcb.Flags, 2 * sizeof(DWORD), unk, &IID_IUnknown);
 663     expect_buffer = HeapAlloc(GetProcessHeap(), 0, expect_size);
 664     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, expect_buffer, expect_size, MSHCTX_DIFFERENTMACHINE);
 665     expect_buffer_end = WdtpInterfacePointer_UserMarshal(&umcb.Flags, umcb.Flags, expect_buffer + 2 * sizeof(DWORD), unk, &IID_IUnknown);
 666
 667     med.tymed = TYMED_NULL;
 668     U(med).pstg = NULL;
 669     med.pUnkForRelease = unk;
 670
 671     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 672     size = STGMEDIUM_UserSize(&umcb.Flags, 0, &med);
 673     ok(size == expect_size, "size %d should be %d bytes\n", size, expect_size);
 674
 675     buffer = HeapAlloc(GetProcessHeap(), 0, size);
 676     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 677     buffer_end = STGMEDIUM_UserMarshal(&umcb.Flags, buffer, &med);
 678     ok(buffer_end - buffer == expect_buffer_end - expect_buffer, "buffer size mismatch\n");
 679     ok(*(DWORD*)buffer == TYMED_NULL, "got %08x\n", *(DWORD*)buffer);
 680     ok(*((DWORD*)buffer+1) != 0, "got %08x\n", *((DWORD*)buffer+1));
 681     ok(!memcmp(buffer+8, expect_buffer + 8, expect_buffer_end - expect_buffer - 8), "buffer mismatch\n");
 682
 683     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 684
 685     /* native crashes if this is uninitialised, presumably because it
 686        tries to release it */
 687     med2.tymed = TYMED_NULL;
 688     U(med2).pstm = NULL;
 689     med2.pUnkForRelease = NULL;
 690
 691     STGMEDIUM_UserUnmarshal(&umcb.Flags, buffer, &med2);
 692
 693     ok(med2.tymed == TYMED_NULL, "got tymed %x\n", med2.tymed);
 694     ok(med2.pUnkForRelease != NULL, "Incorrectly unmarshalled\n");
 695
 696     HeapFree(GetProcessHeap(), 0, buffer);
 697     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 698     STGMEDIUM_UserFree(&umcb.Flags, &med2);
 699
 700     HeapFree(GetProcessHeap(), 0, expect_buffer);
 701
 702     /* TYMED_ISTREAM with pUnkForRelease */
 703
 704     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 705     expect_size = WdtpInterfacePointer_UserSize(&umcb.Flags, umcb.Flags, 3 * sizeof(DWORD), (IUnknown*)stm, &IID_IStream);
 706     expect_size = WdtpInterfacePointer_UserSize(&umcb.Flags, umcb.Flags, expect_size, unk, &IID_IUnknown);
 707
 708     expect_buffer = HeapAlloc(GetProcessHeap(), 0, expect_size);
 709     /* There may be a hole between the two interfaces so init the buffer to something */
 710     memset(expect_buffer, 0xcc, expect_size);
 711     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, expect_buffer, expect_size, MSHCTX_DIFFERENTMACHINE);
 712     expect_buffer_end = WdtpInterfacePointer_UserMarshal(&umcb.Flags, umcb.Flags, expect_buffer + 3 * sizeof(DWORD), (IUnknown*)stm, &IID_IStream);
 713     expect_buffer_end = WdtpInterfacePointer_UserMarshal(&umcb.Flags, umcb.Flags, expect_buffer_end, unk, &IID_IUnknown);
 714
 715     med.tymed = TYMED_ISTREAM;
 716     U(med).pstm = stm;
 717     med.pUnkForRelease = unk;
 718
 719     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 720     size = STGMEDIUM_UserSize(&umcb.Flags, 0, &med);
 721     ok(size == expect_size, "size %d should be %d bytes\n", size, expect_size);
 722
 723     buffer = HeapAlloc(GetProcessHeap(), 0, size);
 724     memset(buffer, 0xcc, size);
 725     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 726     buffer_end = STGMEDIUM_UserMarshal(&umcb.Flags, buffer, &med);
 727     ok(buffer_end - buffer == expect_buffer_end - expect_buffer, "buffer size mismatch\n");
 728     ok(*(DWORD*)buffer == TYMED_ISTREAM, "got %08x\n", *(DWORD*)buffer);
 729     ok(*((DWORD*)buffer+1) != 0, "got %08x\n", *((DWORD*)buffer+1));
 730     ok(*((DWORD*)buffer+2) != 0, "got %08x\n", *((DWORD*)buffer+2));
 731     ok(!memcmp(buffer + 12, expect_buffer + 12, (buffer_end - buffer) - 12), "buffer mismatch\n");
 732
 733     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
 734
 735     /* native crashes if this is uninitialised, presumably because it
 736        tries to release it */
 737     med2.tymed = TYMED_NULL;
 738     U(med2).pstm = NULL;
 739     med2.pUnkForRelease = NULL;
 740
 741     STGMEDIUM_UserUnmarshal(&umcb.Flags, buffer, &med2);
 742
 743     ok(med2.tymed == TYMED_ISTREAM, "got tymed %x\n", med2.tymed);
 744     ok(U(med2).pstm != NULL, "Incorrectly unmarshalled\n");
 745     ok(med2.pUnkForRelease != NULL, "Incorrectly unmarshalled\n");
 746
 747     HeapFree(GetProcessHeap(), 0, buffer);
 748     init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
 749     STGMEDIUM_UserFree(&umcb.Flags, &med2);
 750
 751     HeapFree(GetProcessHeap(), 0, expect_buffer);
 752 }
 753
 754 START_TEST(usrmarshal)
 755 {
 756     CoInitialize(NULL);
 757
 758     test_marshal_CLIPFORMAT();
 759     test_marshal_HWND();
 760     test_marshal_HGLOBAL();
 761     test_marshal_HENHMETAFILE();
 762     test_marshal_HMETAFILE();
 763     test_marshal_HMETAFILEPICT();
 764     test_marshal_WdtpInterfacePointer();
 765     test_marshal_STGMEDIUM();
 766
 767     CoUninitialize();
 768 }