| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org> |
| |
| This software is provided 'as-is', without any express or implied |
| warranty. In no event will the authors be held liable for any damages |
| arising from the use of this software. |
| |
| Permission is granted to anyone to use this software for any purpose, |
| including commercial applications, and to alter it and redistribute it |
| freely, subject to the following restrictions: |
| |
| 1. The origin of this software must not be misrepresented; you must not |
| claim that you wrote the original software. If you use this software |
| in a product, an acknowledgment in the product documentation would be |
| appreciated but is not required. |
| 2. Altered source versions must be plainly marked as such, and must not be |
| misrepresented as being the original software. |
| 3. This notice may not be removed or altered from any source distribution. |
| */ |
| #include "../../SDL_internal.h" |
| |
| #if defined(__WIN32__) || defined(__WINRT__) |
| |
| #include "SDL_windows.h" |
| #include "SDL_error.h" |
| #include "SDL_assert.h" |
| |
| #include <objbase.h> /* for CoInitialize/CoUninitialize (Win32 only) */ |
| |
| /* Sets an error message based on GetLastError() */ |
| int |
| WIN_SetErrorFromHRESULT(const char *prefix, HRESULT hr) |
| { |
| TCHAR buffer[1024]; |
| char *message; |
| FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, hr, 0, |
| buffer, SDL_arraysize(buffer), NULL); |
| message = WIN_StringToUTF8(buffer); |
| SDL_SetError("%s%s%s", prefix ? prefix : "", prefix ? ": " : "", message); |
| SDL_free(message); |
| return -1; |
| } |
| |
| /* Sets an error message based on GetLastError() */ |
| int |
| WIN_SetError(const char *prefix) |
| { |
| return WIN_SetErrorFromHRESULT(prefix, GetLastError()); |
| } |
| |
| HRESULT |
| WIN_CoInitialize(void) |
| { |
| /* SDL handles any threading model, so initialize with the default, which |
| is compatible with OLE and if that doesn't work, try multi-threaded mode. |
| |
| If you need multi-threaded mode, call CoInitializeEx() before SDL_Init() |
| */ |
| #ifdef __WINRT__ |
| /* DLudwig: On WinRT, it is assumed that COM was initialized in main(). |
| CoInitializeEx is available (not CoInitialize though), however |
| on WinRT, main() is typically declared with the [MTAThread] |
| attribute, which, AFAIK, should initialize COM. |
| */ |
| return S_OK; |
| #else |
| HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED); |
| if (hr == RPC_E_CHANGED_MODE) { |
| hr = CoInitializeEx(NULL, COINIT_MULTITHREADED); |
| } |
| |
| /* S_FALSE means success, but someone else already initialized. */ |
| /* You still need to call CoUninitialize in this case! */ |
| if (hr == S_FALSE) { |
| return S_OK; |
| } |
| |
| return hr; |
| #endif |
| } |
| |
| void |
| WIN_CoUninitialize(void) |
| { |
| #ifndef __WINRT__ |
| CoUninitialize(); |
| #endif |
| } |
| |
| #endif /* __WIN32__ */ |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |