mirror of
https://github.com/reactos/reactos.git
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133 lines
3.7 KiB
C++
133 lines
3.7 KiB
C++
/*
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* Copyright 1997 Marcus Meissner
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* Copyright 1998 Juergen Schmied
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "precomp.h"
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WCHAR swShell32Name[MAX_PATH];
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DWORD NumIconOverlayHandlers = 0;
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IShellIconOverlayIdentifier ** Handlers = NULL;
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static void InitIconOverlays(void)
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{
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HKEY hKey;
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DWORD dwIndex, dwResult, dwSize;
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WCHAR szName[MAX_PATH];
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WCHAR szValue[100];
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CLSID clsid;
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if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\ShellIconOverlayIdentifiers", 0, KEY_READ, &hKey) != ERROR_SUCCESS)
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return;
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if (RegQueryInfoKeyW(hKey, NULL, NULL, NULL, &dwResult, NULL, NULL, NULL, NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
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{
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RegCloseKey(hKey);
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return;
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}
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Handlers = (IShellIconOverlayIdentifier **)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, dwResult * sizeof(IShellIconOverlayIdentifier*));
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if (!Handlers)
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{
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RegCloseKey(hKey);
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return;
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}
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dwIndex = 0;
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CoInitialize(0);
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do
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{
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dwSize = sizeof(szName) / sizeof(WCHAR);
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dwResult = RegEnumKeyExW(hKey, dwIndex, szName, &dwSize, NULL, NULL, NULL, NULL);
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if (dwResult == ERROR_NO_MORE_ITEMS)
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break;
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if (dwResult == ERROR_SUCCESS)
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{
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dwSize = sizeof(szValue) / sizeof(WCHAR);
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if (RegGetValueW(hKey, szName, NULL, RRF_RT_REG_SZ, NULL, szValue, &dwSize) == ERROR_SUCCESS)
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{
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CComPtr<IShellIconOverlayIdentifier> Overlay;
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CLSIDFromString(szValue, &clsid);
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dwResult = CoCreateInstance(clsid, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARG(IShellIconOverlayIdentifier, &Overlay));
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if (dwResult == S_OK)
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{
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Handlers[NumIconOverlayHandlers] = Overlay.Detach();
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NumIconOverlayHandlers++;
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}
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}
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}
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dwIndex++;
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} while(1);
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RegCloseKey(hKey);
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}
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BOOL
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GetIconOverlay(LPCITEMIDLIST pidl, WCHAR * wTemp, int* pIndex)
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{
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DWORD Index;
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HRESULT hResult;
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int Priority;
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int HighestPriority;
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ULONG IconIndex;
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ULONG Flags;
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WCHAR szPath[MAX_PATH];
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if(!SHGetPathFromIDListW(pidl, szPath))
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return FALSE;
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if (!Handlers)
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InitIconOverlays();
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HighestPriority = 101;
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IconIndex = NumIconOverlayHandlers;
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for(Index = 0; Index < NumIconOverlayHandlers; Index++)
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{
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hResult = Handlers[Index]->IsMemberOf(szPath, SFGAO_FILESYSTEM);
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if (hResult == S_OK)
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{
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hResult = Handlers[Index]->GetPriority(&Priority);
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if (hResult == S_OK)
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{
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if (Priority < HighestPriority)
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{
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HighestPriority = Priority;
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IconIndex = Index;
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}
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}
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}
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}
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if (IconIndex == NumIconOverlayHandlers)
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return FALSE;
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hResult = Handlers[IconIndex]->GetOverlayInfo(wTemp, MAX_PATH, pIndex, &Flags);
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if (hResult == S_OK)
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return TRUE;
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else
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return FALSE;
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}
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