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Added a generic way of doing GetHGlobalFromILockBytes().

This commit is contained in:
Marcus Meissner 2002-07-05 21:19:55 +00:00 committed by Alexandre Julliard
parent 02ecbd1939
commit c1f3738568
1 changed files with 29 additions and 7 deletions
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34
dlls/ole32/memlockbytes.c
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@ -174,15 +174,38 @@ HRESULT WINAPI CreateILockBytesOnHGlobal(HGLOBAL hGlobal,
HRESULT WINAPI GetHGlobalFromILockBytes(ILockBytes* plkbyt, HGLOBAL* phglobal) HRESULT WINAPI GetHGlobalFromILockBytes(ILockBytes* plkbyt, HGLOBAL* phglobal)
{ {
HGLOBALLockBytesImpl* const pMemLockBytes = (HGLOBALLockBytesImpl*)plkbyt; HGLOBALLockBytesImpl* const pMemLockBytes = (HGLOBALLockBytesImpl*)plkbyt;
STATSTG stbuf;
HRESULT hres;
ULARGE_INTEGER start;
ULONG xread;
if (ICOM_VTBL(pMemLockBytes) == &HGLOBALLockBytesImpl_Vtbl)
*phglobal = pMemLockBytes->supportHandle;
else
*phglobal = 0; *phglobal = 0;
if (ICOM_VTBL(pMemLockBytes) == &HGLOBALLockBytesImpl_Vtbl) {
*phglobal = pMemLockBytes->supportHandle;
if (*phglobal == 0) if (*phglobal == 0)
return E_INVALIDARG; return E_INVALIDARG;
return S_OK;
}
/* It is not our lockbytes implementation, so use a more generic way */
hres = ILockBytes_Stat(plkbyt,&stbuf,0);
if (hres != S_OK) {
ERR("Cannot ILockBytes_Stat, %lx\n",hres);
return hres;
}
FIXME("cbSize is %ld\n",stbuf.cbSize.s.LowPart);
*phglobal = GlobalAlloc( GMEM_MOVEABLE|GMEM_SHARE, stbuf.cbSize.s.LowPart);
if (!*phglobal)
return E_INVALIDARG;
memset(&start,0,sizeof(start));
hres = ILockBytes_ReadAt(plkbyt, start, GlobalLock(*phglobal), stbuf.cbSize.s.LowPart, &xread);
GlobalUnlock(*phglobal);
if (hres != S_OK) {
FIXME("%p->ReadAt failed with %lx\n",plkbyt,hres);
return hres;
}
if (stbuf.cbSize.s.LowPart != xread) {
FIXME("Read size is not requested size %ld vs %ld?\n",stbuf.cbSize.s.LowPart, xread);
}
return S_OK; return S_OK;
} }
@ -594,4 +617,3 @@ HRESULT WINAPI HGLOBALLockBytesImpl_Stat(
return S_OK; return S_OK;
} }