119 lines
3.9 KiB
C++
119 lines
3.9 KiB
C++
#include <Windows.h>
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#include <ShlObj.h>
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#include <tchar.h>
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#include <new>
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#include "basisthumbprovider.h"
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#define SHELLEX_THUMBNAIL_CLSID _T("ShellEx\\{E357FCCD-A995-4576-B01F-234630154E96}")
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#define SHELLEX_PREVIEWER_CLSID _T("ShellEx\\{8895B1C6-B41F-4C1C-A562-0D564250836F}")
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#define THUMBNAIL_HANDLER_TITLE _T("Basis Thumbnail Handler")
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#define THUMBNAIL_HANDLER_CLSID _T("{CD1F0EA0-283C-4D90-A41D-DEBD9207D91F}")
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#define PREVIEWER_HANDLER_TITLE _T("Basis Previewer Handler")
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#define PREVIEWER_HANDLER_CLSID _T("{7B5DA275-3BB6-45AE-B0EB-E50187A28F13}")
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#define FILE_EXTENSION _T(".basis")
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static const CLSID CLSID_ThumbnailHandler = {0xCD1F0EA0, 0x283C, 0x4D90, {0xA4, 0x1D, 0xDE, 0xBD, 0x92, 0x07, 0xD9, 0x1F}};
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static const CLSID CLSID_PreviewerHandler = {0x7B5DA275, 0x3BB6, 0x45AE, {0xB0, 0xEB, 0xE5, 0x01, 0x87, 0xA2, 0x8F, 0x13}};
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static TCHAR dllPath[MAX_PATH] = {0};
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static LONG dllRefs = 0;
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#ifndef BAIL_ON_FAIL
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#define BAIL_ON_FAIL(code) if (FAILED((hr = (code)))) return hr
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#endif
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static HRESULT setRegKey(HKEY root, LPTSTR key, LPTSTR val, LPTSTR data) {
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HKEY hKey;
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HRESULT hr = HRESULT_FROM_WIN32(RegCreateKeyEx(root, key, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_SET_VALUE, NULL, &hKey, NULL));
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if (SUCCEEDED(hr)) {
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hr = HRESULT_FROM_WIN32(RegSetValueEx(hKey, val, 0, REG_SZ, reinterpret_cast<LPBYTE>(data), static_cast<DWORD>(_tcslen(data) * sizeof TCHAR)));
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RegCloseKey(hKey);
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}
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return hr;
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}
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BOOL APIENTRY DllMain(HMODULE hInstDLL, DWORD reason, LPVOID /*reserved*/) {
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if (reason == DLL_PROCESS_ATTACH) {
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OutputDebugString(_T("DllMain"));
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if (GetModuleFileName(hInstDLL, dllPath, sizeof dllPath) == 0) {
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#ifdef _DEBUG
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OutputDebugString(_T("Failed to obtain DLL path"));
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#endif
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}
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DisableThreadLibraryCalls(hInstDLL);
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}
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return TRUE;
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}
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STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, void **ppv) {
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HRESULT hr = CLASS_E_CLASSNOTAVAILABLE;
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if (IsEqualCLSID(CLSID_ThumbnailHandler, rclsid)) {
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hr = E_OUTOFMEMORY;
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if (IClassFactory* factory = new (std::nothrow) BasisThumbProviderFactory()) {
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hr = factory->QueryInterface(riid, ppv);
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factory->Release();
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}
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}
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return hr;
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}
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void DllAddRef() {
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#ifdef _DEBUG
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OutputDebugString(_T("DllAddRef"));
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#endif
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InterlockedIncrement(&dllRefs);
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}
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void DllRelease() {
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#ifdef _DEBUG
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OutputDebugString(_T("DllRelease"));
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#endif
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InterlockedDecrement(&dllRefs);
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}
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STDAPI DllCanUnloadNow() {
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#ifdef _DEBUG
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OutputDebugString(_T("DllCanUnloadNow"));
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#endif
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return (dllRefs == 0) ? S_OK : S_FALSE;
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}
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// regsvr32 /s previewers.dll
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STDAPI DllRegisterServer() {
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HRESULT hr = E_FAIL;
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if (_tcslen(dllPath)) {
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BAIL_ON_FAIL(setRegKey(HKEY_LOCAL_MACHINE, _T("Software\\Classes\\CLSID\\") THUMBNAIL_HANDLER_CLSID, NULL, THUMBNAIL_HANDLER_TITLE));
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BAIL_ON_FAIL(setRegKey(HKEY_LOCAL_MACHINE, _T("Software\\Classes\\CLSID\\") THUMBNAIL_HANDLER_CLSID _T("\\InProcServer32"), NULL, dllPath));
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BAIL_ON_FAIL(setRegKey(HKEY_LOCAL_MACHINE, _T("Software\\Classes\\CLSID\\") THUMBNAIL_HANDLER_CLSID _T("\\InProcServer32"), _T("ThreadingModel"), _T("Apartment")));
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BAIL_ON_FAIL(setRegKey(HKEY_LOCAL_MACHINE, _T("Software\\Classes\\") FILE_EXTENSION _T("\\") SHELLEX_THUMBNAIL_CLSID, NULL, THUMBNAIL_HANDLER_CLSID));
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SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, NULL, NULL);
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}
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#ifdef _DEBUG
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if (SUCCEEDED(hr)) {
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OutputDebugString(_T("Previewer successfully registered"));
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}
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#endif
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return hr;
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}
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// regsvr32 /s /u previewers.dll
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STDAPI DllUnregisterServer() {
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HRESULT hr = HRESULT_FROM_WIN32(RegDeleteTree(HKEY_LOCAL_MACHINE, _T("Software\\Classes\\CLSID\\") THUMBNAIL_HANDLER_CLSID));
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if (SUCCEEDED(hr)) {
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hr = HRESULT_FROM_WIN32(RegDeleteTree(HKEY_LOCAL_MACHINE, _T("Software\\Classes\\") FILE_EXTENSION _T("\\") SHELLEX_THUMBNAIL_CLSID));
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}
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#ifdef _DEBUG
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if (SUCCEEDED(hr)) {
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OutputDebugString(_T("Previewer successfully unregistered"));
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}
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#endif
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return hr;
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}
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