SDL_hid_get_report_descriptor

Get a report descriptor from a HID device.

Header File

Defined in <SDL3/SDL_hidapi.h>

Syntax

int SDL_hid_get_report_descriptor(SDL_hid_device *dev, unsigned char *buf, size_t buf_size);

Function Parameters

SDL_hid_device *	dev	a device handle returned from SDL_hid_open().
unsigned char *	buf	the buffer to copy descriptor into.
size_t	buf_size	the size of the buffer in bytes.

Return Value

(int) Returns the number of bytes actually copied or -1 on failure; call SDL_GetError() for more information.

Remarks

User has to provide a preallocated buffer where descriptor will be copied to. The recommended size for a preallocated buffer is 4096 bytes.

Version

This function is available since SDL 3.2.0.

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CategoryAPI, CategoryAPIFunction, CategoryHIDAPI

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