ULONG_PTR _GetClassData(
PCLS pcls,
PWND pwnd, // used for transition to kernel-mode for GCL_WNDPROC
int index,
BOOL bAnsi)
{
KERNEL_ULONG_PTR dwData;
DWORD dwCPDType = 0;
index -= INDEX_OFFSET;
if (index < 0) {
RIPERR0(ERROR_INVALID_INDEX, RIP_VERBOSE, "");
return 0;
}
UserAssert(index >= 0);
UserAssert(index < sizeof(afClassDWord));
UserAssert(sizeof(afClassDWord) == sizeof(aiClassOffset));
if (afClassDWord[index] == sizeof(DWORD)) {
dwData = *(DWORD *)(((BYTE *)pcls) + aiClassOffset[index]);
} else if (afClassDWord[index] == sizeof(KERNEL_ULONG_PTR)) {
dwData = *(KERNEL_ULONG_PTR *)(((BYTE *)pcls) + aiClassOffset[index]);
} else {
dwData = (DWORD)*(WORD *)(((BYTE *)pcls) + aiClassOffset[index]);
}
index += INDEX_OFFSET;
/*
* If we're returning an icon or cursor handle, do the reverse
* mapping here.
*/
switch(index) {
case GCLP_MENUNAME:
if (IS_PTR(pcls->lpszMenuName)) {
/*
* The Menu Name is a real string: return the client-side address.
* (If the class was registered by another app this returns an
* address in that app's addr. space, but it's the best we can do)
*/
dwData = bAnsi ?
(ULONG_PTR)pcls->lpszClientAnsiMenuName :
(ULONG_PTR)pcls->lpszClientUnicodeMenuName;
}
break;
case GCLP_HICON:
case GCLP_HCURSOR:
case GCLP_HICONSM:
/*
* We have to go to the kernel to convert the pcursor to a handle because
* cursors are allocated out of POOL, which is not accessable from the client.
*/
if (dwData) {
dwData = NtUserCallHwndParam(PtoH(pwnd), index, SFI_GETCLASSICOCUR);
}
break;
case GCLP_WNDPROC:
{
/*
* Always return the client wndproc in case this is a server
* window class.
*/
if (pcls->CSF_flags & CSF_SERVERSIDEPROC) {
dwData = MapServerToClientPfn(dwData, bAnsi);
} else {
KERNEL_ULONG_PTR dwT = dwData;
dwData = MapClientNeuterToClientPfn(pcls, dwT, bAnsi);
/*
* If the client mapping didn't change the window proc then see if
* we need a callproc handle.
*/
if (dwData == dwT) {
/*
* Need to return a CallProc handle if there is an Ansi/Unicode mismatch
*/
if (bAnsi != !!(pcls->CSF_flags & CSF_ANSIPROC)) {
dwCPDType |= bAnsi ? CPD_ANSI_TO_UNICODE : CPD_UNICODE_TO_ANSI;
}
}
}
if (dwCPDType) {
ULONG_PTR dwCPD;
dwCPD = GetCPD(pwnd, dwCPDType | CPD_WNDTOCLS, KERNEL_ULONG_PTR_TO_ULONG_PTR(dwData));
if (dwCPD) {
dwData = dwCPD;
} else {
RIPMSG0(RIP_WARNING, "GetClassLong unable to alloc CPD returning handle\n");
}
}
}
break;
case GCL_CBCLSEXTRA:
if ((pcls->CSF_flags & CSF_WOWCLASS) && (pcls->CSF_flags & CSF_WOWEXTRA)) {
/*
* The 16-bit app changed its Extra bytes value. Return the changed
* value. FritzS
*/
return PWCFromPCLS(pcls)->iClsExtra;
}
else
return pcls->cbclsExtra;
break;
/*
* WOW uses a pointer straight into the class structure.
*/
case GCLP_WOWWORDS:
if (pcls->CSF_flags & CSF_WOWCLASS) {
return ((ULONG_PTR)PWCFromPCLS(pcls));
} else
return 0;
case GCL_STYLE:
dwData &= CS_VALID;
break;
}
return KERNEL_ULONG_PTR_TO_ULONG_PTR(dwData);
}
DWORD _GetClassData(
PCLS pcls,
PWND pwnd, // used for transition to kernel-mode for GCL_WNDPROC
int index,
BOOL bAnsi)
{
DWORD dwData;
DWORD dwCPDType = 0;
index -= INDEX_OFFSET;
if (index < 0) {
RIPERR0(ERROR_INVALID_INDEX, RIP_VERBOSE, "");
return 0;
}
UserAssert(index >= 0);
UserAssert(index < sizeof(afClassDWord));
UserAssert(sizeof(afClassDWord) == sizeof(aiClassOffset));
if (afClassDWord[index]) {
dwData = *(DWORD *)(((BYTE *)pcls) + aiClassOffset[index]);
} else {
dwData = (DWORD)*(WORD *)(((BYTE *)pcls) + aiClassOffset[index]);
}
index += INDEX_OFFSET;
/*
* If we're returning an icon or cursor handle, do the reverse
* mapping here.
*/
switch(index) {
case GCL_MENUNAME:
if (pcls->lpszMenuName != MAKEINTRESOURCE(pcls->lpszMenuName)) {
/*
* The Menu Name is a real string: return the client-side address.
* (If the class was registered by another app this returns an
* address in that app's addr. space, but it's the best we can do)
*/
dwData = bAnsi ?
(DWORD)pcls->lpszClientAnsiMenuName :
(DWORD)pcls->lpszClientUnicodeMenuName;
}
break;
case GCL_HICON:
case GCL_HCURSOR:
case GCL_HICONSM:
/*
* We have to go to the kernel to convert the pcursor to a handle because
* cursors are allocated out of POOL, which is not accessable from the client.
*/
if (dwData) {
dwData = NtUserCallOneParam(dwData, SFI_KERNELPTOH);
}
break;
case GCL_WNDPROC:
{
/*
* Always return the client wndproc in case this is a server
* window class.
*/
if (pcls->flags & CSF_SERVERSIDEPROC) {
dwData = MapServerToClientPfn(dwData, bAnsi);
} else {
DWORD dwT = dwData;
dwData = MapClientNeuterToClientPfn(pcls, dwT, bAnsi);
/*
* If the client mapping didn't change the window proc then see if
* we need a callproc handle.
*/
if (dwData == dwT) {
/*
* Need to return a CallProc handle if there is an Ansi/Unicode mismatch
*/
if (bAnsi != !!(pcls->flags & CSF_ANSIPROC)) {
dwCPDType |= bAnsi ? CPD_ANSI_TO_UNICODE : CPD_UNICODE_TO_ANSI;
}
}
}
if (dwCPDType) {
DWORD dwCPD;
dwCPD = GetCPD(pwnd, dwCPDType | CPD_WNDTOCLS, dwData);
if (dwCPD) {
dwData = dwCPD;
} else {
RIPMSG0(RIP_WARNING, "GetClassLong unable to alloc CPD returning handle\n");
}
}
}
break;
/*
* WOW uses a pointer straight into the class structure.
*/
case GCL_WOWWORDS:
return (DWORD) pcls->adwWOW;
}
return dwData;
}