The hint to set.
The value of the hint variable.
The SDL_HintPriority level for the hint.
true on success or false on failure; call SDL_GetError() for more information.
Threadsafety: It is safe to call this function from any thread.
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Set a hint with a specific priority.
The priority controls the behavior when setting a hint that already has a value. Hints will replace existing hints of their priority and lower. Environment variables are considered to have override priority.