[NTOS:SE] Capture the groups length when creating a token
[reactos.git] / dll / shellext / fontext / fontpidl.cpp
1 /*
2 * PROJECT: ReactOS Font Shell Extension
3 * LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
4 * PURPOSE: pidl handling
5 * COPYRIGHT: Copyright 2019,2020 Mark Jansen (mark.jansen@reactos.org)
6 */
7
8 #include "precomp.h"
9
10 LPITEMIDLIST _ILCreate(LPCWSTR lpString, ULONG Index)
11 {
12 // Because the FontPidlEntry contains one WCHAR, we do not need to take the null terminator into account
13 size_t cbData = sizeof(FontPidlEntry) + wcslen(lpString) * sizeof(WCHAR);
14 FontPidlEntry* pidl = (FontPidlEntry*)CoTaskMemAlloc(cbData + sizeof(WORD));
15 if (!pidl)
16 return NULL;
17
18 ZeroMemory(pidl, cbData + sizeof(WORD));
19
20 pidl->cb = (WORD)cbData;
21 pidl->Magic = 'fp';
22 pidl->Index = Index;
23
24 wcscpy(pidl->Name, lpString);
25 // Should be zero already, but make sure it is
26 *(WORD*)((char*)pidl + cbData) = 0;
27
28 return (LPITEMIDLIST)pidl;
29 }
30
31
32 const FontPidlEntry* _FontFromIL(LPCITEMIDLIST pidl)
33 {
34 const FontPidlEntry* fontEntry = (const FontPidlEntry*)pidl;
35 if (fontEntry->Magic == 'fp')
36 return fontEntry;
37 return NULL;
38 }