cscg22-gearboy

CSCG 2022 Challenge 'Gearboy'
git clone https://git.sinitax.com/sinitax/cscg22-gearboy
Log | Files | Refs | sfeed.txt

SDL_windows.c (3865B)

      1/*
      2  Simple DirectMedia Layer
      3  Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
      4
      5  This software is provided 'as-is', without any express or implied
      6  warranty.  In no event will the authors be held liable for any damages
      7  arising from the use of this software.
      8
      9  Permission is granted to anyone to use this software for any purpose,
     10  including commercial applications, and to alter it and redistribute it
     11  freely, subject to the following restrictions:
     12
     13  1. The origin of this software must not be misrepresented; you must not
     14     claim that you wrote the original software. If you use this software
     15     in a product, an acknowledgment in the product documentation would be
     16     appreciated but is not required.
     17  2. Altered source versions must be plainly marked as such, and must not be
     18     misrepresented as being the original software.
     19  3. This notice may not be removed or altered from any source distribution.
     20*/
     21#include "../../SDL_internal.h"
     22
     23#if defined(__WIN32__) || defined(__WINRT__)
     24
     25#include "SDL_windows.h"
     26#include "SDL_error.h"
     27#include "SDL_assert.h"
     28
     29#include <objbase.h>  /* for CoInitialize/CoUninitialize (Win32 only) */
     30
     31#ifndef _WIN32_WINNT_VISTA
     32#define _WIN32_WINNT_VISTA  0x0600
     33#endif
     34
     35
     36/* Sets an error message based on GetLastError() */
     37int
     38WIN_SetErrorFromHRESULT(const char *prefix, HRESULT hr)
     39{
     40    TCHAR buffer[1024];
     41    char *message;
     42    FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, hr, 0,
     43                  buffer, SDL_arraysize(buffer), NULL);
     44    message = WIN_StringToUTF8(buffer);
     45    SDL_SetError("%s%s%s", prefix ? prefix : "", prefix ? ": " : "", message);
     46    SDL_free(message);
     47    return -1;
     48}
     49
     50/* Sets an error message based on GetLastError() */
     51int
     52WIN_SetError(const char *prefix)
     53{
     54    return WIN_SetErrorFromHRESULT(prefix, GetLastError());
     55}
     56
     57HRESULT
     58WIN_CoInitialize(void)
     59{
     60    /* SDL handles any threading model, so initialize with the default, which
     61       is compatible with OLE and if that doesn't work, try multi-threaded mode.
     62
     63       If you need multi-threaded mode, call CoInitializeEx() before SDL_Init()
     64    */
     65#ifdef __WINRT__
     66    /* DLudwig: On WinRT, it is assumed that COM was initialized in main().
     67       CoInitializeEx is available (not CoInitialize though), however
     68       on WinRT, main() is typically declared with the [MTAThread]
     69       attribute, which, AFAIK, should initialize COM.
     70    */
     71    return S_OK;
     72#else
     73    HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
     74    if (hr == RPC_E_CHANGED_MODE) {
     75        hr = CoInitializeEx(NULL, COINIT_MULTITHREADED);
     76    }
     77
     78    /* S_FALSE means success, but someone else already initialized. */
     79    /* You still need to call CoUninitialize in this case! */
     80    if (hr == S_FALSE) {
     81        return S_OK;
     82    }
     83
     84    return hr;
     85#endif
     86}
     87
     88void
     89WIN_CoUninitialize(void)
     90{
     91#ifndef __WINRT__
     92    CoUninitialize();
     93#endif
     94}
     95
     96#ifndef __WINRT__
     97static BOOL
     98IsWindowsVersionOrGreater(WORD wMajorVersion, WORD wMinorVersion, WORD wServicePackMajor)
     99{
    100    OSVERSIONINFOEXW osvi;
    101    DWORDLONG const dwlConditionMask = VerSetConditionMask(
    102        VerSetConditionMask(
    103        VerSetConditionMask(
    104        0, VER_MAJORVERSION, VER_GREATER_EQUAL ),
    105        VER_MINORVERSION, VER_GREATER_EQUAL ),
    106        VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL );
    107
    108    SDL_zero(osvi);
    109    osvi.dwOSVersionInfoSize = sizeof(osvi);
    110    osvi.dwMajorVersion = wMajorVersion;
    111    osvi.dwMinorVersion = wMinorVersion;
    112    osvi.wServicePackMajor = wServicePackMajor;
    113
    114    return VerifyVersionInfoW(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR, dwlConditionMask) != FALSE;
    115}
    116#endif
    117
    118BOOL WIN_IsWindowsVistaOrGreater()
    119{
    120#ifdef __WINRT__
    121    return TRUE;
    122#else
    123    return IsWindowsVersionOrGreater(HIBYTE(_WIN32_WINNT_VISTA), LOBYTE(_WIN32_WINNT_VISTA), 0);
    124#endif
    125}
    126
    127#endif /* __WIN32__ */
    128
    129/* vi: set ts=4 sw=4 expandtab: */