+ /* Check if the class version is an atom */
+ if (IS_ATOM(plstrClsVersion))
+ {
+ /* It is, pass the atom in the UNICODE_STRING */
+ ustrClsVersion.Buffer = (PVOID)plstrClsVersion;
+ ustrClsVersion.Length = 0;
+ ustrClsVersion.MaximumLength = 0;
+ }
+ else
+ {
+ /* It's not, capture the class name */
+ Status = ProbeAndCaptureLargeString(&lstrClsVersion, plstrClsVersion);
+ if (!NT_SUCCESS(Status))
+ {
+ ERR("NtUserCreateWindowEx: failed to capture plstrClsVersion\n");
+ /* Set last error, cleanup and return */
+ SetLastNtError(Status);
+ goto cleanup;
+ }
+
+ /* We pass it on as a UNICODE_STRING */
+ ustrClsVersion.Buffer = lstrClsVersion.Buffer;
+ ustrClsVersion.Length = (USHORT)min(lstrClsVersion.Length, MAXUSHORT); // FIXME: LARGE_STRING truncated
+ ustrClsVersion.MaximumLength = (USHORT)min(lstrClsVersion.MaximumLength, MAXUSHORT);
+ }
+