the mime type to read from the clipboard.
a pointer filled in with the length of the returned data.
the retrieved data buffer or NULL on failure; call SDL_GetError() for more information. This should be freed with SDL_free() when it is no longer needed.
Threadsafety: This function should only be called on the main thread.
Get the data from clipboard for a given mime type.
The size of text data does not include the terminator, but the text is guaranteed to be null terminated.