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Commit Description:
Various UI improvements.
Commit Description:
Various UI improvements.
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FNA/lib/FAudio/cpp/win_registry.cpp
87 lines | 2.5 KiB | text/x-c | CppLexer
87 lines | 2.5 KiB | text/x-c | CppLexer
| r0 | #define WIN32_LEAN_AND_MEAN | |||
| #include <windows.h> | ||||
| #include <stdio.h> /* snprintf */ | ||||
| static bool registry_write_string(HKEY reg, const char *name, const char *value, size_t len) | ||||
| { | ||||
| HRESULT hr = RegSetValueExA( | ||||
| reg, | ||||
| name, | ||||
| 0, | ||||
| REG_SZ, | ||||
| reinterpret_cast<const BYTE *> (value), | ||||
| static_cast<DWORD>((len + 1) * sizeof(char)) | ||||
| ); | ||||
| return hr == ERROR_SUCCESS; | ||||
| } | ||||
| static const char *base_key() | ||||
| { | ||||
| if (sizeof(void *) == 4) | ||||
| { | ||||
| return "Software\\Classes\\WOW6432Node\\CLSID"; | ||||
| } | ||||
| else | ||||
| { | ||||
| return "Software\\Classes\\CLSID"; | ||||
| } | ||||
| } | ||||
| static void format_clsid(REFIID clsid, char *value, size_t max) | ||||
| { | ||||
| snprintf(value, max, "{%08lX-%04hX-%04hX-%02hhX%02hhX-%02hhX%02hhX%02hhX%02hhX%02hhX%02hhX}", | ||||
| clsid.Data1, clsid.Data2, clsid.Data3, | ||||
| clsid.Data4[0], clsid.Data4[1], clsid.Data4[2], clsid.Data4[3], | ||||
| clsid.Data4[4], clsid.Data4[5], clsid.Data4[6], clsid.Data4[7]); | ||||
| } | ||||
| extern "C" HRESULT register_faudio_dll(void *DllHandle, REFIID clsid) | ||||
| { | ||||
| // not your typical COM register functions because we're "hijacking" the existing XAudio2 registration | ||||
| // - COM classes are historically registered under HKEY_CLASSES_ROOT | ||||
| // - on modern Windows version this is a merged from on HKEY_LOCAL_MACHINE/Software/Classes and HKEY_CURRENT_USER/Software/Classes | ||||
| // - the system-wide configuration is stored under HKEY_LOCAL_MACHINE | ||||
| // - we override the registration for the XAudio2 DLLs for the current user | ||||
| char str_clsid[40]; | ||||
| format_clsid(clsid, str_clsid, sizeof(str_clsid) / sizeof(char)); | ||||
| char key[2048]; | ||||
| snprintf(key, sizeof(key) / sizeof(char), "%s\\%s\\InProcServer32", base_key(), str_clsid); | ||||
| // open registry (creating key if it does not exist) | ||||
| HKEY registry_key = NULL; | ||||
| if (RegCreateKeyExA(HKEY_CURRENT_USER, key, 0, NULL, 0, KEY_WRITE, NULL, ®istry_key, NULL)) | ||||
| { | ||||
| return E_FAIL; | ||||
| } | ||||
| // retrieve path to the dll | ||||
| char path[2048]; | ||||
| DWORD len = GetModuleFileNameA(reinterpret_cast<HMODULE>(DllHandle), path, sizeof(key) / sizeof(char)); | ||||
| // update registry | ||||
| registry_write_string(registry_key, NULL, path, len); | ||||
| RegCloseKey(registry_key); | ||||
| return S_OK; | ||||
| } | ||||
| extern "C" HRESULT unregister_faudio_dll(void *DllHandle, REFIID clsid) | ||||
| { | ||||
| // open registry | ||||
| HKEY registry_key = NULL; | ||||
| if (RegOpenKeyExA(HKEY_CURRENT_USER, base_key(), 0, DELETE | KEY_SET_VALUE | KEY_ENUMERATE_SUB_KEYS | KEY_QUERY_VALUE, ®istry_key)) | ||||
| { | ||||
| return E_FAIL; | ||||
| } | ||||
| char str_clsid[40]; | ||||
| format_clsid(clsid, str_clsid, sizeof(str_clsid) / sizeof(char)); | ||||
| // delete key | ||||
| HRESULT hr = RegDeleteTreeA(registry_key, str_clsid); | ||||
| RegCloseKey(registry_key); | ||||
| return S_OK; | ||||
| } | ||||
