HGDIOBJ
WINAPI
GdiInsertClientObj(
_In_ PVOID pvObject,
_In_ GDILOOBJTYPE eObjType)
{
PCLIENTOBJLINK pcol;
ULONG iHashIndex;
HGDIOBJ hobj;
/* Call win32k to create a client object handle */
hobj = NtGdiCreateClientObj(eObjType);
if (hobj == NULL)
{
return NULL;
}
/* Calculate the hash index */
iHashIndex = (ULONG_PTR)hobj % _countof(gapcolHashTable);
/* Allocate a link structure */
pcol = HeapAlloc(GetProcessHeap(), 0, sizeof(*pcol));
if (pcol == NULL)
{
NtGdiDeleteClientObj(hobj);
return NULL;
}
/* Setup the link structure */
pcol->hobj = hobj;
pcol->pvObj = pvObject;
/* Enter the critical section */
EnterCriticalSection(&gcsClientObjLinks);
/* Insert the link structure */
pcol->pcolNext = gapcolHashTable[iHashIndex];
gapcolHashTable[iHashIndex] = pcol;
/* Leave the critical section */
LeaveCriticalSection(&gcsClientObjLinks);
return hobj;
}
HGDIOBJ
WINAPI
GdiCreateClientObj(
_In_ PVOID pvObject,
_In_ GDILOOBJTYPE eObjType)
{
HGDIOBJ hobj;
/* Call win32k to create a client object handle */
hobj = NtGdiCreateClientObj(eObjType);
if (hobj == NULL)
{
return NULL;
}
/* Create the client object link */
if (!GdiCreateClientObjLink(hobj, pvObject))
{
NtGdiDeleteClientObj(hobj);
return NULL;
}
return hobj;
}
