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(This is the documentation for SDL3, which is under heavy development and the API is changing! SDL2 is the current stable version!)


Get a report descriptor from a HID device.


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

Function Parameters

dev A device handle returned from SDL_hid_open().
buf The buffer to copy descriptor into.
buf_size The size of the buffer in bytes.

Return Value

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


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


This function is available since SDL 3.0.0.


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