SDL
2.0
SDL_guid.h
Go to the documentation of this file.
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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/* WIKI CATEGORY: GUID */
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/**
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* # CategoryGUID
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*
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* A GUID is a 128-bit value that represents something that is uniquely
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* identifiable by this value: "globally unique."
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*/
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#ifndef SDL_guid_h_
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#define SDL_guid_h_
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#include "
SDL_stdinc.h
"
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#include "
SDL_error.h
"
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#include "
begin_code.h
"
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/* Set up for C function definitions, even when using C++ */
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#ifdef __cplusplus
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extern
"C"
{
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#endif
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/**
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* An SDL_GUID is a 128-bit identifier.
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*
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* This is an acronym for "Globally Unique ID."
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*
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* While a GUID can be used to assign a unique value to almost anything, in
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* SDL these are largely used to identify input devices across runs of SDL
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* programs on the same platform.If the device is detached and then
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* re-attached to a different port, or if the base system is rebooted, the
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* device should still report the same GUID.
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*
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* GUIDs are as precise as possible but are not guaranteed to distinguish
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* physically distinct but equivalent devices. For example, two game
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* controllers from the same vendor with the same product ID and revision may
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* have the same GUID.
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*
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* GUIDs may be platform-dependent (i.e., the same device may report different
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* GUIDs on different operating systems).
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*/
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typedef
struct
SDL_GUID
{
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Uint8
data
[16];
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}
SDL_GUID
;
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/* Function prototypes */
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/**
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* Get an ASCII string representation for a given SDL_GUID.
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*
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* You should supply at least 33 bytes for pszGUID.
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*
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* \param guid the SDL_GUID you wish to convert to string.
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* \param pszGUID buffer in which to write the ASCII string.
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* \param cbGUID the size of pszGUID.
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*
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* \since This function is available since SDL 2.24.0.
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*
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* \sa SDL_GUIDFromString
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*/
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extern
DECLSPEC
void
SDLCALL
SDL_GUIDToString
(
SDL_GUID
guid,
char
*pszGUID,
int
cbGUID);
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/**
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* Convert a GUID string into a SDL_GUID structure.
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*
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* Performs no error checking. If this function is given a string containing
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* an invalid GUID, the function will silently succeed, but the GUID generated
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* will not be useful.
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*
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* \param pchGUID string containing an ASCII representation of a GUID.
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* \returns a SDL_GUID structure.
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*
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* \since This function is available since SDL 2.24.0.
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*
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* \sa SDL_GUIDToString
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*/
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extern
DECLSPEC
SDL_GUID
SDLCALL
SDL_GUIDFromString
(
const
char
*pchGUID);
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/* Ends C function definitions when using C++ */
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#ifdef __cplusplus
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}
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#endif
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#include "
close_code.h
"
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#endif
/* SDL_guid_h_ */
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/* vi: set ts=4 sw=4 expandtab: */
SDL_error.h
SDL_GUIDFromString
SDL_GUID SDL_GUIDFromString(const char *pchGUID)
SDL_GUIDToString
void SDL_GUIDToString(SDL_GUID guid, char *pszGUID, int cbGUID)
SDL_stdinc.h
Uint8
uint8_t Uint8
Definition
SDL_stdinc.h:203
begin_code.h
close_code.h
SDL_GUID
Definition
SDL_guid.h:62
SDL_GUID::data
Uint8 data[16]
Definition
SDL_guid.h:63
include
SDL_guid.h
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