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Added an API to get the joystick instance ID before opening the device: SDL_JoystickGetDeviceInstanceID()

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This commit is contained in:
Sam Lantinga 2017-03-09 16:09:16 -08:00
parent 6bdc0e724d
commit 763e138903
4 changed files with 30 additions and 6 deletions
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14
include/SDL_joystick.h
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@ -71,6 +71,13 @@ typedef struct {
Uint8 data[16];
} SDL_JoystickGUID;
/**
* This is a unique ID for a joystick for the time it is connected to the system,
* and is never reused for the lifetime of the application. If the joystick is
* disconnected and reconnected, it will get a new ID.
*
* The ID value starts at 0 and increments from there. The value -1 is an invalid ID.
*/
typedef Sint32 SDL_JoystickID;
typedef enum
@ -144,6 +151,13 @@ extern DECLSPEC Uint16 SDLCALL SDL_JoystickGetDeviceProductVersion(int device_in
*/
extern DECLSPEC SDL_JoystickType SDLCALL SDL_JoystickGetDeviceType(int device_index);
/**
* Get the instance ID of a joystick.
* This can be called before any joysticks are opened.
* If the index is out of range, this function will return -1.
*/
extern DECLSPEC SDL_JoystickID SDLCALL SDL_JoystickGetDeviceInstanceID(int device_index);
/**
* Open a joystick for use.
* The index passed as an argument refers to the N'th joystick on the system.